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  • Min
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    Iout 1 (mA)
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  • Iout 3 (mA)
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      Part Number Product Category Power (W) Vin (V) Vout 1 (V) Package Style Isolation (kV)
    1 RECOM | RYK-053.3S/H | DC/DC, THT, 1W, Single Output
    Focus
    DC/DC 1 5 3.3 SIP7 4
    2 RECOM | RYK-0505S/H | DC/DC, THT, 1W, Single Output
    Focus
    DC/DC 1 5 5 SIP7 4
    3 RECOM | RY-2424S/P | DC/DC, THT, 1W, Single Output
    DC/DC 1 24 24 SIP7 1
    4 RECOM | RY-2424S | DC/DC, THT, 1W, Single Output
    DC/DC 1 24 24 SIP7 1
    5 RECOM | RY-2424D/P | DC/DC, THT, 1W, Dual Output
    DC/DC 1 24 24 SIP7 1
    6 RECOM | RY-2424D | DC/DC, THT, 1W, Dual Output
    DC/DC 1 24 24 SIP7 1
    7 RECOM | RY-2415S/P | DC/DC, THT, 1W, Single Output
    DC/DC 1 24 15 SIP7 1
    8 RECOM | RY-2415S | DC/DC, THT, 1W, Single Output
    DC/DC 1 24 15 SIP7 1
    9 RECOM | RY-2415D/P | DC/DC, THT, 1W, Dual Output
    DC/DC 1 24 15 SIP7 1
    10 RECOM | RY-2415D | DC/DC, THT, 1W, Dual Output
    DC/DC 1 24 15 SIP7 1
    11 RECOM | RY-2412S/P | DC/DC, THT, 1W, Single Output
    DC/DC 1 24 12 SIP7 1
    12 RECOM | RY-2412S | DC/DC, THT, 1W, Single Output
    DC/DC 1 24 12 SIP7 1
    13 RECOM | RY-2412D/P | DC/DC, THT, 1W, Dual Output
    DC/DC 1 24 12 SIP7 1
    14 RECOM | RY-2412D | DC/DC, THT, 1W, Dual Output
    DC/DC 1 24 12 SIP7 1
    15 RECOM | RY-2409S/P | DC/DC, THT, 1W, Single Output
    DC/DC 1 24 9 SIP7 1
    16 RECOM | RY-2409S | DC/DC, THT, 1W, Single Output
    DC/DC 1 24 9 SIP7 1
    17 RECOM | RY-2409D/P | DC/DC, THT, 1W, Dual Output
    DC/DC 1 24 9 SIP7 1
    18 RECOM | RY-2409D | DC/DC, THT, 1W, Dual Output
    DC/DC 1 24 9 SIP7 1
    19 RECOM | RY-2405S/P | DC/DC, THT, 1W, Single Output
    DC/DC 1 24 5 SIP7 1
    20 RECOM | RY-2405S | DC/DC, THT, 1W, Single Output
    DC/DC 1 24 5 SIP7 1
    21 RECOM | RY-2405D/P | DC/DC, THT, 1W, Dual Output
    DC/DC 1 24 5 SIP7 1
    22 RECOM | RY-2405D | DC/DC, THT, 1W, Dual Output
    DC/DC 1 24 5 SIP7 1
    23 RECOM | RY-1524S/P | DC/DC, THT, 1W, Single Output
    DC/DC 1 15 24 SIP7 1
    24 RECOM | RY-1524S | DC/DC, THT, 1W, Single Output
    DC/DC 1 15 24 SIP7 1
    25 RECOM | RY-1524D/P | DC/DC, THT, 1W, Dual Output
    DC/DC 1 15 24 SIP7 1
    26 RECOM | RY-1524D | DC/DC, THT, 1W, Dual Output
    DC/DC 1 15 24 SIP7 1
    27 RECOM | RY-1515S/P | DC/DC, THT, 1W, Single Output
    DC/DC 1 15 15 SIP7 1
    28 RECOM | RY-1515S | DC/DC, THT, 1W, Single Output
    DC/DC 1 15 15 SIP7 1
    29 RECOM | RY-1515D/P | DC/DC, THT, 1W, Dual Output
    DC/DC 1 15 15 SIP7 1
    30 RECOM | RY-1515D | DC/DC, THT, 1W, Dual Output
    DC/DC 1 15 15 SIP7 1
    31 RECOM | RY-1512S/P | DC/DC, THT, 1W, Single Output
    DC/DC 1 15 12 SIP7 1
    32 RECOM | RY-1512S | DC/DC, THT, 1W, Single Output
    DC/DC 1 15 12 SIP7 1
    33 RECOM | RY-1512D/P | DC/DC, THT, 1W, Dual Output
    DC/DC 1 15 12 SIP7 1
    34 RECOM | RY-1512D | DC/DC, THT, 1W, Dual Output
    DC/DC 1 15 12 SIP7 1
    35 RECOM | RY-1509S/P | DC/DC, THT, 1W, Single Output
    DC/DC 1 15 9 SIP7 1
    36 RECOM | RY-1509S | DC/DC, THT, 1W, Single Output
    DC/DC 1 15 9 SIP7 1
    37 RECOM | RY-1509D/P | DC/DC, THT, 1W, Dual Output
    DC/DC 1 15 9 SIP7 1
    38 RECOM | RY-1509D | DC/DC, THT, 1W, Dual Output
    DC/DC 1 15 9 SIP7 1
    39 RECOM | RY-1505S/P | DC/DC, THT, 1W, Single Output
    DC/DC 1 15 5 SIP7 1
    40 RECOM | RY-1505S | DC/DC, THT, 1W, Single Output
    DC/DC 1 15 5 SIP7 1
    41 RECOM | RY-1505D/P | DC/DC, THT, 1W, Dual Output
    DC/DC 1 15 5 SIP7 1
    42 RECOM | RY-1505D | DC/DC, THT, 1W, Dual Output
    DC/DC 1 15 5 SIP7 1
    43 RECOM | RY-1224S/P | DC/DC, THT, 1W, Single Output
    DC/DC 1 12 24 SIP7 1
    44 RECOM | RY-1224S | DC/DC, THT, 1W, Single Output
    DC/DC 1 12 24 SIP7 1
    45 RECOM | RY-1224D/P | DC/DC, THT, 1W, Dual Output
    DC/DC 1 12 24 SIP7 1
    46 RECOM | RY-1224D | DC/DC, THT, 1W, Dual Output
    DC/DC 1 12 24 SIP7 1
    47 RECOM | RY-1215S/P | DC/DC, THT, 1W, Single Output
    DC/DC 1 12 15 SIP7 1
    48 RECOM | RY-1215S | DC/DC, THT, 1W, Single Output
    DC/DC 1 12 15 SIP7 1
    49 RECOM | RY-1215D/P | DC/DC, THT, 1W, Dual Output
    DC/DC 1 12 15 SIP7 1
    50 RECOM | RY-1215D | DC/DC, THT, 1W, Dual Output
    DC/DC 1 12 15 SIP7 1
    51 RECOM | RY-1212S/P | DC/DC, THT, 1W, Single Output
    DC/DC 1 12 12 SIP7 1
    52 RECOM | RY-1212S | DC/DC, THT, 1W, Single Output
    DC/DC 1 12 12 SIP7 1
    53 RECOM | RY-1212D/P | DC/DC, THT, 1W, Dual Output
    DC/DC 1 12 12 SIP7 1
    54 RECOM | RY-1212D | DC/DC, THT, 1W, Dual Output
    DC/DC 1 12 12 SIP7 1
    55 RECOM | RY-1209S/P | DC/DC, THT, 1W, Single Output
    DC/DC 1 12 9 SIP7 1
    56 RECOM | RY-1209S | DC/DC, THT, 1W, Single Output
    DC/DC 1 12 9 SIP7 1
    57 RECOM | RY-1209D/P | DC/DC, THT, 1W, Dual Output
    DC/DC 1 12 9 SIP7 1
    58 RECOM | RY-1209D | DC/DC, THT, 1W, Dual Output
    DC/DC 1 12 9 SIP7 1
    59 RECOM | RY-1205S/P | DC/DC, THT, 1W, Single Output
    DC/DC 1 12 5 SIP7 1
    60 RECOM | RY-1205S | DC/DC, THT, 1W, Single Output
    DC/DC 1 12 5 SIP7 1
    61 RECOM | RY-1205D/P | DC/DC, THT, 1W, Dual Output
    DC/DC 1 12 5 SIP7 1
    62 RECOM | RY-1205D | DC/DC, THT, 1W, Dual Output
    DC/DC 1 12 5 SIP7 1
    63 RECOM | RY-0924S/P | DC/DC, THT, 1W, Single Output
    DC/DC 1 9 24 SIP7 1
    64 RECOM | RY-0924S | DC/DC, THT, 1W, Single Output
    DC/DC 1 9 24 SIP7 1
    65 RECOM | RY-0924D/P | DC/DC, THT, 1W, Dual Output
    DC/DC 1 9 24 SIP7 1
    66 RECOM | RY-0924D | DC/DC, THT, 1W, Dual Output
    DC/DC 1 9 24 SIP7 1
    67 RECOM | RY-0915S/P | DC/DC, THT, 1W, Single Output
    DC/DC 1 9 15 SIP7 1
    68 RECOM | RY-0915S | DC/DC, THT, 1W, Single Output
    DC/DC 1 9 15 SIP7 1
    69 RECOM | RY-0915D/P | DC/DC, THT, 1W, Dual Output
    DC/DC 1 9 15 SIP7 1
    70 RECOM | RY-0915D | DC/DC, THT, 1W, Dual Output
    DC/DC 1 9 15 SIP7 1
    71 RECOM | RY-0912S/P | DC/DC, THT, 1W, Single Output
    DC/DC 1 9 12 SIP7 1
    72 RECOM | RY-0912S | DC/DC, THT, 1W, Single Output
    DC/DC 1 9 12 SIP7 1
    73 RECOM | RY-0912D/P | DC/DC, THT, 1W, Dual Output
    DC/DC 1 9 12 SIP7 1
    74 RECOM | RY-0912D | DC/DC, THT, 1W, Dual Output
    DC/DC 1 9 12 SIP7 1
    75 RECOM | RY-0909S/P | DC/DC, THT, 1W, Single Output
    DC/DC 1 9 9 SIP7 1
    76 RECOM | RY-0909S | DC/DC, THT, 1W, Single Output
    DC/DC 1 9 9 SIP7 1
    77 RECOM | RY-0909D/P | DC/DC, THT, 1W, Dual Output
    DC/DC 1 9 9 SIP7 1
    78 RECOM | RY-0909D | DC/DC, THT, 1W, Dual Output
    DC/DC 1 9 9 SIP7 1
    79 RECOM | RY-0905S/P | DC/DC, THT, 1W, Single Output
    DC/DC 1 9 5 SIP7 1
    80 RECOM | RY-0905S | DC/DC, THT, 1W, Single Output
    DC/DC 1 9 5 SIP7 1
    81 RECOM | RY-0905D/P | DC/DC, THT, 1W, Dual Output
    DC/DC 1 9 5 SIP7 1
    82 RECOM | RY-0905D | DC/DC, THT, 1W, Dual Output
    DC/DC 1 9 5 SIP7 1
    83 RECOM | RY-0524S/P | DC/DC, THT, 1W, Single Output
    DC/DC 1 5 24 SIP7 1
    84 RECOM | RY-0524S | DC/DC, THT, 1W, Single Output
    DC/DC 1 5 24 SIP7 1
    85 RECOM | RY-0524D/P | DC/DC, THT, 1W, Dual Output
    DC/DC 1 5 24 SIP7 1
    86 RECOM | RY-0524D | DC/DC, THT, 1W, Dual Output
    DC/DC 1 5 24 SIP7 1
    87 RECOM | RY-0515S/P | DC/DC, THT, 1W, Single Output
    DC/DC 1 5 15 SIP7 1
    88 RECOM | RY-0515S | DC/DC, THT, 1W, Single Output
    DC/DC 1 5 15 SIP7 1
    89 RECOM | RY-0515D/P | DC/DC, THT, 1W, Dual Output
    DC/DC 1 5 15 SIP7 1
    90 RECOM | RY-0515D | DC/DC, THT, 1W, Dual Output
    DC/DC 1 5 15 SIP7 1
    91 RECOM | RY-0512S/P | DC/DC, THT, 1W, Single Output
    DC/DC 1 5 12 SIP7 1
    92 RECOM | RY-0512S | DC/DC, THT, 1W, Single Output
    DC/DC 1 5 12 SIP7 1
    93 RECOM | RY-0512D/P | DC/DC, THT, 1W, Dual Output
    DC/DC 1 5 12 SIP7 1
    94 RECOM | RY-0512D | DC/DC, THT, 1W, Dual Output
    DC/DC 1 5 12 SIP7 1
    95 RECOM | RY-0509S/P | DC/DC, THT, 1W, Single Output
    DC/DC 1 5 9 SIP7 1
    96 RECOM | RY-0509S | DC/DC, THT, 1W, Single Output
    DC/DC 1 5 9 SIP7 1
    97 RECOM | RY-0509D/P | DC/DC, THT, 1W, Dual Output
    DC/DC 1 5 9 SIP7 1
    98 RECOM | RY-0509D | DC/DC, THT, 1W, Dual Output
    DC/DC 1 5 9 SIP7 1
    99 RECOM | RY-0505S/P | DC/DC, THT, 1W, Single Output
    DC/DC 1 5 5 SIP7 1
    100 RECOM | RY-0505S | DC/DC, THT, 1W, Single Output
    DC/DC 1 5 5 SIP7 1
    101 RECOM | RY-0505D/P | DC/DC, THT, 1W, Dual Output
    DC/DC 1 5 5 SIP7 1
    102 RECOM | RY-0505D | DC/DC, THT, 1W, Dual Output
    DC/DC 1 5 5 SIP7 1
    103 RECOM | RW2-483.3S/SMD | DC/DC, SMD, 2W, Single Output
    DC/DC 2 36 - 72 3.3 SMD 16 Pin 1
    104 RECOM | RW2-483.3S/H3/SMD | DC/DC, SMD, 2W, Single Output
    DC/DC 2 36 - 72 3.3 SMD 16 Pin 3
    105 RECOM | RW2-483.3S/H3/B | DC/DC, THT, 2W, Single Output
    DC/DC 2 36 - 72 3.3 DIP16 Mini 3
    106 RECOM | RW2-483.3S/H3 | DC/DC, THT, 2W, Single Output
    DC/DC 2 36 - 72 3.3 DIP16 3
    107 RECOM | RW2-483.3S/H2/SMD | DC/DC, SMD, 2W, Single Output
    DC/DC 2 36 - 72 3.3 SMD 16 Pin 2
    108 RECOM | RW2-483.3S/H2/B | DC/DC, THT, 2W, Single Output
    DC/DC 2 36 - 72 3.3 DIP16 Mini 2
    109 RECOM | RW2-483.3S/H2 | DC/DC, THT, 2W, Single Output
    DC/DC 2 36 - 72 3.3 DIP16 2
    110 RECOM | RW2-483.3S/B | DC/DC, THT, 2W, Single Output
    DC/DC 2 36 - 72 3.3 DIP16 Mini 1
    111 RECOM | RW2-483.3S | DC/DC, THT, 2W, Single Output
    DC/DC 2 36 - 72 3.3 DIP16 1
    112 RECOM | RW2-483.3D/SMD | DC/DC, SMD, 2W, Dual Output
    DC/DC 2 36 - 72 3.3 SMD 16 Pin 1
    113 RECOM | RW2-483.3D/H3/SMD | DC/DC, SMD, 2W, Dual Output
    DC/DC 2 36 - 72 3.3 SMD 16 Pin 3
    114 RECOM | RW2-483.3D/H3/B | DC/DC, THT, 2W, Dual Output
    DC/DC 2 36 - 72 3.3 DIP16 Mini 3
    115 RECOM | RW2-483.3D/H3 | DC/DC, THT, 2W, Dual Output
    DC/DC 2 36 - 72 3.3 DIP16 3
    116 RECOM | RW2-483.3D/H2/SMD | DC/DC, SMD, 2W, Dual Output
    DC/DC 2 36 - 72 3.3 SMD 16 Pin 2
    117 RECOM | RW2-483.3D/H2/B | DC/DC, THT, 2W, Dual Output
    DC/DC 2 36 - 72 3.3 DIP16 Mini 2
    118 RECOM | RW2-483.3D/H2 | DC/DC, THT, 2W, Dual Output
    DC/DC 2 36 - 72 3.3 DIP16 2
    119 RECOM | RW2-483.3D/B | DC/DC, THT, 2W, Dual Output
    DC/DC 2 36 - 72 3.3 DIP16 Mini 1
    120 RECOM | RW2-483.3D | DC/DC, THT, 2W, Dual Output
    DC/DC 2 36 - 72 3.3 DIP16 1
    121 RECOM | RW2-4815S/SMD | DC/DC, SMD, 2W, Single Output
    DC/DC 2 36 - 72 15 SMD 16 Pin 1
    122 RECOM | RW2-4815S/H3/SMD | DC/DC, SMD, 2W, Single Output
    DC/DC 2 36 - 72 15 SMD 16 Pin 3
    123 RECOM | RW2-4815S/H3/B | DC/DC, THT, 2W, Single Output
    DC/DC 2 36 - 72 15 DIP16 Mini 3
    124 RECOM | RW2-4815S/H3 | DC/DC, THT, 2W, Single Output
    DC/DC 2 36 - 72 15 DIP16 3
    125 RECOM | RW2-4815S/H2/SMD | DC/DC, SMD, 2W, Single Output
    DC/DC 2 36 - 72 15 SMD 16 Pin 2
    126 RECOM | RW2-4815S/H2/B | DC/DC, THT, 2W, Single Output
    DC/DC 2 36 - 72 15 DIP16 Mini 2
    127 RECOM | RW2-4815S/H2 | DC/DC, THT, 2W, Single Output
    DC/DC 2 36 - 72 15 DIP16 2
    128 RECOM | RW2-4815S/B | DC/DC, THT, 2W, Single Output
    DC/DC 2 36 - 72 15 DIP16 Mini 1
    129 RECOM | RW2-4815S | DC/DC, THT, 2W, Single Output
    DC/DC 2 36 - 72 15 DIP16 1
    130 RECOM | RW2-4815D/SMD | DC/DC, SMD, 2W, Dual Output
    DC/DC 2 36 - 72 15 SMD 16 Pin 1
    131 RECOM | RW2-4815D/H3/SMD | DC/DC, SMD, 2W, Dual Output
    DC/DC 2 36 - 72 15 SMD 16 Pin 3
    132 RECOM | RW2-4815D/H3/B | DC/DC, THT, 2W, Dual Output
    DC/DC 2 36 - 72 15 DIP16 Mini 3
    133 RECOM | RW2-4815D/H3 | DC/DC, THT, 2W, Dual Output
    DC/DC 2 36 - 72 15 DIP16 3
    134 RECOM | RW2-4815D/H2/SMD | DC/DC, SMD, 2W, Dual Output
    DC/DC 2 36 - 72 15 SMD 16 Pin 2
    135 RECOM | RW2-4815D/H2/B | DC/DC, THT, 2W, Dual Output
    DC/DC 2 36 - 72 15 DIP16 Mini 2
    136 RECOM | RW2-4815D/H2 | DC/DC, THT, 2W, Dual Output
    DC/DC 2 36 - 72 15 DIP16 2
    137 RECOM | RW2-4815D/B | DC/DC, THT, 2W, Dual Output
    DC/DC 2 36 - 72 15 DIP16 Mini 1
    138 RECOM | RW2-4815D | DC/DC, THT, 2W, Dual Output
    DC/DC 2 36 - 72 15 DIP16 1
    139 RECOM | RW2-4812S/SMD | DC/DC, SMD, 2W, Single Output
    DC/DC 2 36 - 72 12 SMD 16 Pin 1
    140 RECOM | RW2-4812S/H3/SMD | DC/DC, SMD, 2W, Single Output
    DC/DC 2 36 - 72 12 SMD 16 Pin 3
    141 RECOM | RW2-4812S/H3/B | DC/DC, THT, 2W, Single Output
    DC/DC 2 36 - 72 12 DIP16 Mini 3
    142 RECOM | RW2-4812S/H3 | DC/DC, THT, 2W, Single Output
    DC/DC 2 36 - 72 12 DIP16 3
    143 RECOM | RW2-4812S/H2/SMD | DC/DC, SMD, 2W, Single Output
    DC/DC 2 36 - 72 12 SMD 16 Pin 2
    144 RECOM | RW2-4812S/H2/B | DC/DC, THT, 2W, Single Output
    DC/DC 2 36 - 72 12 DIP16 Mini 2
    145 RECOM | RW2-4812S/H2 | DC/DC, THT, 2W, Single Output
    DC/DC 2 36 - 72 12 DIP16 2
    146 RECOM | RW2-4812S/B | DC/DC, THT, 2W, Single Output
    DC/DC 2 36 - 72 12 DIP16 Mini 1
    147 RECOM | RW2-4812S | DC/DC, THT, 2W, Single Output
    DC/DC 2 36 - 72 12 DIP16 1
    148 RECOM | RW2-4812D/SMD | DC/DC, SMD, 2W, Dual Output
    DC/DC 2 36 - 72 12 SMD 16 Pin 1
    149 RECOM | RW2-4812D/H3/SMD | DC/DC, SMD, 2W, Dual Output
    DC/DC 2 36 - 72 12 SMD 16 Pin 3
    150 RECOM | RW2-4812D/H3/B | DC/DC, THT, 2W, Dual Output
    DC/DC 2 36 - 72 12 DIP16 Mini 3
    151 RECOM | RW2-4812D/H3 | DC/DC, THT, 2W, Dual Output
    DC/DC 2 36 - 72 12 DIP16 3
    152 RECOM | RW2-4812D/H2/SMD | DC/DC, SMD, 2W, Dual Output
    DC/DC 2 36 - 72 12 SMD 16 Pin 2
    153 RECOM | RW2-4812D/H2/B | DC/DC, THT, 2W, Dual Output
    DC/DC 2 36 - 72 12 DIP16 Mini 2
    154 RECOM | RW2-4812D/H2 | DC/DC, THT, 2W, Dual Output
    DC/DC 2 36 - 72 12 DIP16 2
    155 RECOM | RW2-4812D/B | DC/DC, THT, 2W, Dual Output
    DC/DC 2 36 - 72 12 DIP16 Mini 1
    156 RECOM | RW2-4812D | DC/DC, THT, 2W, Dual Output
    DC/DC 2 36 - 72 12 DIP16 1
    157 RECOM | RW2-4809S/SMD | DC/DC, SMD, 2W, Single Output
    DC/DC 2 36 - 72 9 SMD 16 Pin 1
    158 RECOM | RW2-4809S/H3/SMD | DC/DC, SMD, 2W, Single Output
    DC/DC 2 36 - 72 9 SMD 16 Pin 3
    159 RECOM | RW2-4809S/H3/B | DC/DC, THT, 2W, Single Output
    DC/DC 2 36 - 72 9 DIP16 Mini 3
    160 RECOM | RW2-4809S/H3 | DC/DC, THT, 2W, Single Output
    DC/DC 2 36 - 72 9 DIP16 3
    161 RECOM | RW2-4809S/H2/SMD | DC/DC, SMD, 2W, Single Output
    DC/DC 2 36 - 72 9 SMD 16 Pin 2
    162 RECOM | RW2-4809S/H2/B | DC/DC, THT, 2W, Single Output
    DC/DC 2 36 - 72 9 DIP16 Mini 2
    163 RECOM | RW2-4809S/H2 | DC/DC, THT, 2W, Single Output
    DC/DC 2 36 - 72 9 DIP16 2
    164 RECOM | RW2-4809S/B | DC/DC, THT, 2W, Single Output
    DC/DC 2 36 - 72 9 DIP16 Mini 1
    165 RECOM | RW2-4809S | DC/DC, THT, 2W, Single Output
    DC/DC 2 36 - 72 9 DIP16 1
    166 RECOM | RW2-4809D/SMD | DC/DC, SMD, 2W, Dual Output
    DC/DC 2 36 - 72 9 SMD 16 Pin 1
    167 RECOM | RW2-4809D/H3/SMD | DC/DC, SMD, 2W, Dual Output
    DC/DC 2 36 - 72 9 SMD 16 Pin 3
    168 RECOM | RW2-4809D/H3/B | DC/DC, THT, 2W, Dual Output
    DC/DC 2 36 - 72 9 DIP16 Mini 3
    169 RECOM | RW2-4809D/H3 | DC/DC, THT, 2W, Dual Output
    DC/DC 2 36 - 72 9 DIP16 3
    170 RECOM | RW2-4809D/H2/SMD | DC/DC, SMD, 2W, Dual Output
    DC/DC 2 36 - 72 9 SMD 16 Pin 2
    171 RECOM | RW2-4809D/H2/B | DC/DC, THT, 2W, Dual Output
    DC/DC 2 36 - 72 9 DIP16 Mini 2
    172 RECOM | RW2-4809D/H2 | DC/DC, THT, 2W, Dual Output
    DC/DC 2 36 - 72 9 DIP16 2
    173 RECOM | RW2-4809D/B | DC/DC, THT, 2W, Dual Output
    DC/DC 2 36 - 72 9 DIP16 Mini 1
    174 RECOM | RW2-4809D | DC/DC, THT, 2W, Dual Output
    DC/DC 2 36 - 72 9 DIP16 1
    175 RECOM | RW2-4805S/SMD | DC/DC, SMD, 2W, Single Output
    DC/DC 2 36 - 72 5 SMD 16 Pin 1
    176 RECOM | RW2-4805S/H3/SMD | DC/DC, SMD, 2W, Single Output
    DC/DC 2 36 - 72 5 SMD 16 Pin 3
    177 RECOM | RW2-4805S/H3/B | DC/DC, THT, 2W, Single Output
    DC/DC 2 36 - 72 5 DIP16 Mini 3
    178 RECOM | RW2-4805S/H3 | DC/DC, THT, 2W, Single Output
    DC/DC 2 36 - 72 5 DIP16 3
    179 RECOM | RW2-4805S/H2/SMD | DC/DC, SMD, 2W, Single Output
    DC/DC 2 36 - 72 5 SMD 16 Pin 2
    180 RECOM | RW2-4805S/H2/B | DC/DC, THT, 2W, Single Output
    DC/DC 2 36 - 72 5 DIP16 Mini 2
    181 RECOM | RW2-4805S/H2 | DC/DC, THT, 2W, Single Output
    DC/DC 2 36 - 72 5 DIP16 2
    182 RECOM | RW2-4805S/B | DC/DC, THT, 2W, Single Output
    DC/DC 2 36 - 72 5 DIP16 Mini 1
    183 RECOM | RW2-4805S | DC/DC, THT, 2W, Single Output
    DC/DC 2 36 - 72 5 DIP16 1
    184 RECOM | RW2-4805D/SMD | DC/DC, SMD, 2W, Dual Output
    DC/DC 2 36 - 72 5 SMD 16 Pin 1
    185 RECOM | RW2-4805D/H3/SMD | DC/DC, SMD, 2W, Dual Output
    DC/DC 2 36 - 72 5 SMD 16 Pin 3
    186 RECOM | RW2-4805D/H3/B | DC/DC, THT, 2W, Dual Output
    DC/DC 2 36 - 72 5 DIP16 Mini 3
    187 RECOM | RW2-4805D/H3 | DC/DC, THT, 2W, Dual Output
    DC/DC 2 36 - 72 5 DIP16 3
    188 RECOM | RW2-4805D/H2/SMD | DC/DC, SMD, 2W, Dual Output
    DC/DC 2 36 - 72 5 SMD 16 Pin 2
    189 RECOM | RW2-4805D/H2/B | DC/DC, THT, 2W, Dual Output
    DC/DC 2 36 - 72 5 DIP16 Mini 2
    190 RECOM | RW2-4805D/H2 | DC/DC, THT, 2W, Dual Output
    DC/DC 2 36 - 72 5 DIP16 2
    191 RECOM | RW2-4805D/B | DC/DC, THT, 2W, Dual Output
    DC/DC 2 36 - 72 5 DIP16 Mini 1
    192 RECOM | RW2-4805D | DC/DC, THT, 2W, Dual Output
    DC/DC 2 36 - 72 5 DIP16 1
    193 RECOM | RW2-243.3S/SMD | DC/DC, SMD, 2W, Single Output
    DC/DC 2 18 - 36 3.3 SMD 16 Pin 1
    194 RECOM | RW2-243.3S/H3/SMD | DC/DC, SMD, 2W, Single Output
    DC/DC 2 18 - 36 3.3 SMD 16 Pin 3
    195 RECOM | RW2-243.3S/H3/B | DC/DC, THT, 2W, Single Output
    DC/DC 2 18 - 36 3.3 DIP16 Mini 3
    196 RECOM | RW2-243.3S/H3 | DC/DC, THT, 2W, Single Output
    DC/DC 2 18 - 36 3.3 DIP16 3
    197 RECOM | RW2-243.3S/H2/SMD | DC/DC, SMD, 2W, Single Output
    DC/DC 2 18 - 36 3.3 SMD 16 Pin 2
    198 RECOM | RW2-243.3S/H2/B | DC/DC, THT, 2W, Single Output
    DC/DC 2 18 - 36 3.3 DIP16 Mini 2
    199 RECOM | RW2-243.3S/H2 | DC/DC, THT, 2W, Single Output
    DC/DC 2 18 - 36 3.3 DIP16 2
    200 RECOM | RW2-243.3S/B | DC/DC, THT, 2W, Single Output
    DC/DC 2 18 - 36 3.3 DIP16 Mini 1
    201 RECOM | RW2-243.3S | DC/DC, THT, 2W, Single Output
    DC/DC 2 18 - 36 3.3 DIP16 1
    202 RECOM | RW2-243.3D/SMD | DC/DC, SMD, 2W, Dual Output
    DC/DC 2 18 - 36 3.3 SMD 16 Pin 1
    203 RECOM | RW2-243.3D/H3/SMD | DC/DC, SMD, 2W, Dual Output
    DC/DC 2 18 - 36 3.3 SMD 16 Pin 3
    204 RECOM | RW2-243.3D/H3/B | DC/DC, THT, 2W, Dual Output
    DC/DC 2 18 - 36 3.3 DIP16 Mini 3
    205 RECOM | RW2-243.3D/H3 | DC/DC, THT, 2W, Dual Output
    DC/DC 2 18 - 36 3.3 DIP16 3
    206 RECOM | RW2-243.3D/H2/SMD | DC/DC, SMD, 2W, Dual Output
    DC/DC 2 18 - 36 3.3 SMD 16 Pin 2
    207 RECOM | RW2-243.3D/H2/B | DC/DC, THT, 2W, Dual Output
    DC/DC 2 18 - 36 3.3 DIP16 Mini 2
    208 RECOM | RW2-243.3D/H2 | DC/DC, THT, 2W, Dual Output
    DC/DC 2 18 - 36 3.3 DIP16 2
    209 RECOM | RW2-243.3D/B | DC/DC, THT, 2W, Dual Output
    DC/DC 2 18 - 36 3.3 DIP16 Mini 1
    210 RECOM | RW2-243.3D | DC/DC, THT, 2W, Dual Output
    DC/DC 2 18 - 36 3.3 DIP16 1
    211 RECOM | RW2-2415S/SMD | DC/DC, SMD, 2W, Single Output
    DC/DC 2 18 - 36 15 SMD 16 Pin 1
    212 RECOM | RW2-2415S/H3/SMD | DC/DC, SMD, 2W, Single Output
    DC/DC 2 18 - 36 15 SMD 16 Pin 3
    213 RECOM | RW2-2415S/H3/B | DC/DC, THT, 2W, Single Output
    DC/DC 2 18 - 36 15 DIP16 Mini 3
    214 RECOM | RW2-2415S/H3 | DC/DC, THT, 2W, Single Output
    DC/DC 2 18 - 36 15 DIP16 3
    215 RECOM | RW2-2415S/H2/SMD | DC/DC, SMD, 2W, Single Output
    DC/DC 2 18 - 36 15 SMD 16 Pin 2
    216 RECOM | RW2-2415S/H2/B | DC/DC, THT, 2W, Single Output
    DC/DC 2 18 - 36 15 DIP16 Mini 2
    217 RECOM | RW2-2415S/H2 | DC/DC, THT, 2W, Single Output
    DC/DC 2 18 - 36 15 DIP16 2
    218 RECOM | RW2-2415S/B | DC/DC, THT, 2W, Single Output
    DC/DC 2 18 - 36 15 DIP16 Mini 1
    219 RECOM | RW2-2415S | DC/DC, THT, 2W, Single Output
    DC/DC 2 18 - 36 15 DIP16 1
    220 RECOM | RW2-2415D/SMD | DC/DC, SMD, 2W, Dual Output
    DC/DC 2 18 - 36 15 SMD 16 Pin 1
    221 RECOM | RW2-2415D/H3/SMD | DC/DC, SMD, 2W, Dual Output
    DC/DC 2 18 - 36 15 SMD 16 Pin 3
    222 RECOM | RW2-2415D/H3/B | DC/DC, THT, 2W, Dual Output
    DC/DC 2 18 - 36 15 DIP16 Mini 3
    223 RECOM | RW2-2415D/H3 | DC/DC, THT, 2W, Dual Output
    DC/DC 2 18 - 36 15 DIP16 3
    224 RECOM | RW2-2415D/H2/SMD | DC/DC, SMD, 2W, Dual Output
    DC/DC 2 18 - 36 15 SMD 16 Pin 2
    225 RECOM | RW2-2415D/H2/B | DC/DC, THT, 2W, Dual Output
    DC/DC 2 18 - 36 15 DIP16 Mini 2
    226 RECOM | RW2-2415D/H2 | DC/DC, THT, 2W, Dual Output
    DC/DC 2 18 - 36 15 DIP16 2
    227 RECOM | RW2-2415D/B | DC/DC, THT, 2W, Dual Output
    DC/DC 2 18 - 36 15 DIP16 Mini 1
    228 RECOM | RW2-2415D | DC/DC, THT, 2W, Dual Output
    DC/DC 2 18 - 36 15 DIP16 1
    229 RECOM | RW2-2412S/SMD | DC/DC, SMD, 2W, Single Output
    DC/DC 2 18 - 36 12 SMD 16 Pin 1
    230 RECOM | RW2-2412S/H3/SMD | DC/DC, SMD, 2W, Single Output
    DC/DC 2 18 - 36 12 SMD 16 Pin 3
    231 RECOM | RW2-2412S/H3/B | DC/DC, THT, 2W, Single Output
    DC/DC 2 18 - 36 12 DIP16 Mini 3
    232 RECOM | RW2-2412S/H3 | DC/DC, THT, 2W, Single Output
    DC/DC 2 18 - 36 12 DIP16 3
    233 RECOM | RW2-2412S/H2/SMD | DC/DC, SMD, 2W, Single Output
    DC/DC 2 18 - 36 12 SMD 16 Pin 2
    234 RECOM | RW2-2412S/H2/B | DC/DC, THT, 2W, Single Output
    DC/DC 2 18 - 36 12 DIP16 Mini 2
    235 RECOM | RW2-2412S/H2 | DC/DC, THT, 2W, Single Output
    DC/DC 2 18 - 36 12 DIP16 2
    236 RECOM | RW2-2412S/B | DC/DC, THT, 2W, Single Output
    DC/DC 2 18 - 36 12 DIP16 Mini 1
    237 RECOM | RW2-2412S | DC/DC, THT, 2W, Single Output
    DC/DC 2 18 - 36 12 DIP16 1
    238 RECOM | RW2-2412D/SMD | DC/DC, SMD, 2W, Dual Output
    DC/DC 2 18 - 36 12 SMD 16 Pin 1
    239 RECOM | RW2-2412D/H3/SMD | DC/DC, SMD, 2W, Dual Output
    DC/DC 2 18 - 36 12 SMD 16 Pin 3
    240 RECOM | RW2-2412D/H3/B | DC/DC, THT, 2W, Dual Output
    DC/DC 2 18 - 36 12 DIP16 Mini 3
    241 RECOM | RW2-2412D/H3 | DC/DC, THT, 2W, Dual Output
    DC/DC 2 18 - 36 12 DIP16 3
    242 RECOM | RW2-2412D/H2/SMD | DC/DC, SMD, 2W, Dual Output
    DC/DC 2 18 - 36 12 SMD 16 Pin 2
    243 RECOM | RW2-2412D/H2/B | DC/DC, THT, 2W, Dual Output
    DC/DC 2 18 - 36 12 DIP16 Mini 2
    244 RECOM | RW2-2412D/H2 | DC/DC, THT, 2W, Dual Output
    DC/DC 2 18 - 36 12 DIP16 2
    245 RECOM | RW2-2412D/B | DC/DC, THT, 2W, Dual Output
    DC/DC 2 18 - 36 12 DIP16 Mini 1
    246 RECOM | RW2-2412D | DC/DC, THT, 2W, Dual Output
    DC/DC 2 18 - 36 12 DIP16 1
    247 RECOM | RW2-2409S/SMD | DC/DC, SMD, 2W, Single Output
    DC/DC 2 18 - 36 9 SMD 16 Pin 1
    248 RECOM | RW2-2409S/H3/SMD | DC/DC, SMD, 2W, Single Output
    DC/DC 2 18 - 36 9 SMD 16 Pin 3
    249 RECOM | RW2-2409S/H3/B | DC/DC, THT, 2W, Single Output
    DC/DC 2 18 - 36 9 DIP16 Mini 3
    250 RECOM | RW2-2409S/H3 | DC/DC, THT, 2W, Single Output
    DC/DC 2 18 - 36 9 DIP16 3
    Product Category
    Power (W)
  • Min
  • Nom
  • Max
  • Isolation
    Vin (V)
  • Min
  • Nom
  • Max
  • Main Vout (V)
  • Min
  • Nom
  • Max
  • Nr. of Outputs
    Iout 1 (mA)
  • Min
  • Nom
  • Max
  • Iout 2 (mA)
  • Min
  • Nom
  • Max
  • Iout 3 (mA)
  • Min
  • Nom
  • Max
  • Isolation (kV)
  • Min
  • Nom
  • Max
  • Mounting Type
    Package Style
    Length (mm)
  • Min
  • Max
  • Width (mm)
  • Min
  • Max
  • Height (mm)
  • Min
  • Max
  • Certifications
    MIN Operating Temp (°C)
  • Max
  • MAX Operating Temp (°C)
  • Min
  • Protections
    Regulation
    Topology
    Primary Winding
    Secondary Winding
    Primary Inductance (µH)
    Center Tap
    CRA relevant
      Series
    1 RECOM | R-78CK-0.5 Series | DC/DC, THT, Single Output
    Focus
    (4 products)
    • Efficiency up to 96%, no need for heatsinks
    • Pin-out compatible with LM78xx linears
    • Compact package (L*W*H=11.5*7.55*10.2mm)
    • Wide input range (5V - 40V)
    2 RECOM | R-78HE-0.3 Series | DC/DC, THT, 1.5W, Single Output
    Focus
    (1 product)
    • Designed for 12V - 60V battery-powered apps
    • Wide input range (6.5V - 72V)
    • 100V surge withstand
    • -40°C to +105°C operation at 48V input, full load
    3 RECOM | R-78K-0.5 Series | DC/DC, THT, Single Output
    Focus
    (9 products)
    • Efficiency up to 96%, no need for heatsinks
    • 4.5 - 36VDC wide input voltage
    • -40°C to +90°C ambient operation without derating
    • Pin compatible with 78 series regulators
    4 RECOM | R-78K-1.0 Series | DC/DC, THT, Single Output
    Focus
    (7 products)
    • Efficiency up to 95%, no need for heatsinks
    • 4.5 - 36VDC wide input voltage
    • -40°C to +90°C ambient operation without derating
    • Pin compatible with 78 series regulators
    5 RECOM | R-78K-2.0 Series | DC/DC, THT, Single Output
    Focus
    (18 products)
    • Efficiency up to 96%, no need for heatsinks
    • 4.5 - 36VDC wide input voltage
    • -40°C to +90°C ambient operation without derating
    • Pin compatible with 78 series regulators
    6 RECOM | R12C2T12/R Series | DC/DC, SMD, 2.5W, Single/dual Output
    Focus
    (2 products)
    • 2.5W isolated DC/DC converter
    • Programmable asymmetrical output voltages
    • 9 - 18VDC input voltage range
    • For IGBT/Si/SiC/Cascode GaN gate drive bias voltages
    7 RECOM | R12C2T25/R Series | DC/DC, SMD, 2.5W, Single/dual Output
    Focus
    (2 products)
    • 2.5W isolated DC/DC converter
    • Programmable asymmetrical output voltages
    • 9 - 18VDC input voltage range
    • For IGBT/Si/SiC/Cascode GaN gate drive bias voltages
    8 RECOM | R15C2T25/R Series | DC/DC, SMD, 2.5W, Single/dual Output
    Focus
    (2 products)
    • 2.5W isolated DC/DC converter
    • Programmable asymmetrical output voltages
    • 13.5 - 18VDC input voltage range
    • For IGBT/Si/SiC/Cascode GaN gate drive bias voltages
    9 RECOM | R1DX Series | DC/DC, SMD, 1W, Dual Output
    Focus
    (16 products)
    • 1W Power in SMD package
    • Pin compatible with R1D series
    • -40°C to +95°C operating temperature @ full load
    • High 3kVDC/1 second or 1kVDC/1 second isolation
    10 RECOM | R1M Series | DC/DC, SMD, 1W
    Focus
    (27 products)
    • 1W power in SMD package
    • 4:1 Input voltage range
    • Efficiency up to 81%
    • 1.6kVDC/1min isolation
    11 RECOM | R1S Series | DC/DC, SMD, 1W, Single Output
    Focus
    (600 products)
    • Full power at 100°C ambient temperature
    • 1kVDC/1s or 3kVDC/1s isolation option
    • UL and EN certified, CB report
    • Suitable for fully automated assembly (including vapor phase soldering)
    12 RECOM | R1SE Series | DC/DC, SMD, 1W, Single Output
    Focus
    (4 products)
    • 1:1 input range
    • SMD package
    • Efficiency up to 75%
    • 1kVDC/1s isolation
    13 RECOM | R1SE/H2 Series | DC/DC, SMD, 1W, Single Output
    Focus
    (6 products)
    • SMD case style
    • Tape and reel packaging
    • UL60950-1 certified
    • High operating temperature range from -40°C to +100°C at full load
    14 RECOM | R1SX Series | DC/DC, SMD, 1W, Single Output
    Focus
    (8 products)
    • 1W Power in SMD package
    • Pin compatible with R1S series
    • -40°C to +100°C operating temperature @ full load
    • High 3kVDC/1 second or 1kVDC/1 second isolation
    15 RECOM | R24C2T25 Series | DC/DC, SMD, 2.5W, Single/dual Output
    Focus
    (2 products)
    • 2W isolated DC/DC converter
    • Programmable asymmetrical output voltages
    • Ideal for IGBT/Si/SiC/GaN gate drive bias voltages
    • High 3kVAC/1min isolation
    16 RECOM | R24C2T25/R Series | DC/DC, SMD, 2.5W, Single/dual Output
    Focus
    (2 products)
    • 2.5W isolated DC/DC converter
    • Programmable asymmetrical output voltages
    • 21 - 27VDC input voltage range
    • For IGBT/Si/SiC/Cascode GaN gate drive bias voltages
    17 RECOM | R2M Series | DC/DC, 2W
    Focus
    (54 products)
    • 2W power in SMD or DIP8 package
    • 4:1 Input voltage range
    • Efficiency up to 81%
    • 1.6kVDC/1min isolation
    18 RECOM | R2SX Series | DC/DC, SMD, 2W, Single Output
    Focus
    (24 products)
    • 2 Watt power supply in SMD package
    • -40°C to +100°C operating temperature
    • No minimum load required
    • IEC/EN/UL62368-1 certified, CB Report
    19 RECOM | R3M Series | DC/DC, SMD, 3W
    Focus
    (27 products)
    • 3W power in SMD package
    • 4:1 Input voltage range
    • Efficiency up to 84%
    • 1.6kVDC/1min isolation
    20 RECOM | R5M Series | DC/DC, SMD, 5W
    Focus
    (18 products)
    • 5W power in SMD package
    • 4:1 Input voltage range
    • Efficiency up to 86%
    • 1.6kVDC/1min isolation
    21 RECOM | R9C1T18/R Series | DC/DC, SMD, 3W, Single/dual Output
    Focus
    (2 products)
    • 1.5W isolated DC/DC converter
    • Programmable asymmetrical output voltages
    • 8.5 - 18VDC input voltage range
    • For IGBT/Si/SiC/Cascode GaN gate drive bias voltages
    22 RECOM | RA3 Series | DC/DC, SMD (pinless), 3W
    Focus
    (32 products)
    • 3W isolated DC/DC converter
    • High 5.2kVDC/1min isolation
    • Wide operating temperature range: -40°C to +85°C
    • Ideal for IGBT/Si/SiC/GaN gate drive power
    23 RECOM | RAC02E-K/277 Series | AC/DC, THT, 2W, Single Output
    Focus
    (5 products)
    • 85 to 305VAC input voltage range
    • 4kVAC isolation strength
    • Operating temperature: -40°C to +90°C
    • Full load output power up to 80°C
    24 RECOM | RAC03-K Series | AC/DC, 3W, Single Output
    Focus
    (11 products)
    • JEDEC-reflow solder-able construction
    • Standby mode optimized (Ecodesign Lot 6)
    • Full load rating from 85 to 265Vac
    • -40 to +80°C rated operating temperature
    25 RECOM | RAC03E-K/277 Series | AC/DC, THT, 3W, Single Output
    Focus
    (5 products)
    • 85 to 305Vac input / OVC III
    • Full load output power up to 75°C
    • 15.4mm low profile
    • -40°C to 85°C operating temperature
    26 RECOM | RAC04NE-K/277 Series | AC/DC, 4W, Single Output
    Focus
    (8 products)
    • 85-305VAC input with a full load up to +80°C
    • Enhanced surge ratings of 2kV (L-N); 4kV (L-PE)
    • OVC III overvolatge category up to 3000m altitude
    • 6 watt boost power up to 20s
    27 RECOM | RAC05-K/277 Series | AC/DC, THT, 5W, Single Output
    Focus
    (5 products)
    • Wide input range 85-305VAC
    • Standby mode optimized (eco design Lot 6)
    • Overvoltage category OVC III (2000m)
    • Operating temperature range: -40°C to +90°C
    28 RECOM | RAC05-K/480 Series | AC/DC, THT, 5W, Single Output
    Focus
    (3 products)
    • Ultra-wide input range 85-528VAC
    • OVC III input rating without additional fuses
    • Operating temperature range: -40°C to +80°C
    • Overvoltage and overcurrent protected
    29 RECOM | RAC05E-KT Series | AC/DC, THT, 5W, Single Output
    Focus
    (5 products)
    • 100-240VAC Input
    • Primary side regulated
    • EI-30 transformer pinout
    • Full load operation: -25 to 55°C
    30 RECOM | RAC10-K/277 Series | AC/DC, THT, 10W
    Focus
    (8 products)
    • Wide input range 85-305VAC
    • Operating temperature range: -40°C to +80°C
    • High efficiency over entire load range
    • No external components necessary
    31 RECOM | RAC10E-K/277 Series | AC/DC, THT, 10W, Single Output
    Focus
    (5 products)
    • Wide input range 85-305VAC
    • 5000m operating altitude
    • OVC III over voltage category up to 2000m
    • Operating temperature ratings: -40°C to +90°C
    32 RECOM | RAC15-K/480 Series | AC/DC, THT, 15W, Single Output
    Focus
    (4 products)
    • OVC III and PD3 up to 5000m altitude
    • 85-528VAC input range
    • -40°C to +90°C operating temperature
    • LPS limited power source
    33 RECOM | RAC15-K/WI Series | AC/DC, 15W, Single Output
    Focus
    (10 products)
    • Ultra low Input: AC: 18-264V or DC: 18-375V
    • 1.5”x2” compact size; standard pinning [P12]
    • Print mount or flying wire connections
    • OVC III to 3000m or OVC II to 5000m altitude
    34 RECOM | RAC20-K Series | AC/DC, THT, 20W
    Focus
    (8 products)
    • Wide input range 85-264VAC
    • Standby mode optimized PSU (ENER Lot 6)
    • Ultra-high efficiency over entire load range
    • Operating temperature range: -40°C to +85°C
    35 RECOM | RAC20-K/277/NE/W Series | AC/DC, Wired, 20W, Single Output
    Focus
    (2 products)
    • Wide input range 85-264VAC / 85-305VAC
    • Standby mode optimized PSU (ENER Lot 6)
    • Operating Altitude up to 5000m
    • Operating temperature range: -40°C to +85°C
    36 RECOM | RAC20-K/W Series | AC/DC, Wired, 20W, Single Output
    Focus
    (5 products)
    • Wide input range 85-264VAC
    • Standby mode optimized PSU (ENER Lot 6)
    • Ultra-high efficiency over entire load range
    • Operating temperature range: -40°C to +85°C
    37 RECOM | RAC20E-K/277 Series | AC/DC, THT, 20W, Single Output
    Focus
    (3 products)
    • Wide input range 85-305VAC
    • 5000m operating altitude
    • OVC III over voltage category up to 2000m
    • Operating temperature ratings: -40°C to +90°C
    38 RECOM | RAC20NE-K/277 Series | AC/DC, 20W
    Focus
    (10 products)
    • 85-305VAC (option “/400”: .. 440VAC) input range
    • Full load ratings to 60°C, (option “/HT” .. 85°C)
    • EN55032 “B”: O/P floating or earth-coupled
    • Surge immunity 2kVAC: L-N &; 4kV: L; N - Earth
    39 RECOM | RAC20NE-K/277/EPID Series | AC/DC, Push-in Terminal, Single Output
    Focus
    (5 products)
    • 85-305VAC wide input range
    • Full load power ratings to 55°C
    • 23 Watt Boost Power
    • Optional CV/CC overcurrent limited
    40 RECOM | RAC25-K/480 Series | AC/DC, THT, 25W, Single Output
    Focus
    (4 products)
    • OVC III and PD3 up to 5000m altitude
    • 85-528VAC input range
    • -40°C to +90°C operating temperature:
    • LPS limited power source
    41 RECOM | RACM06E-K/277 Series | AC/DC, THT, 6W, Single Output
    Focus
    (6 products)
    • 6 Watt output up to 60°C
    • 1”x1” footprint; 17mm low profile
    • 100-277VAC nominal operating range
    • -40°C to +90°C operating temperature ratings
    42 RECOM | RACM1200-V Series | AC/DC, Connector, 1200W, Single Output
    Focus
    (5 products)
    • Up to 1000 Watt fan-less power / 1200W boost
    • Designed and manufactured in europe
    • Efficiency exceeding 90% from 15% load
    • Wide Operating temperature range -40…+80°C
    43 RECOM | RACM130E-K Series | AC/DC, Connector, 130W, Single Output
    Focus
    (10 products)
    • Wide range input: 85-264VAC
    • 130W peak power
    • OVC III rating
    • 2MOPP medical certified, B and BF ready
    44 RECOM | RACM140E-K Series | AC/DC, Connector, Single Output
    Focus
    (8 products)
    • Cost-efficient and reliable Design
    • 210W boost power up to 10s
    • Over voltage category OVC III; 2000m
    • 5000m operating altitude
    45 RECOM | RACM15E-K Series | AC/DC, Single Output
    Focus
    (11 products)
    • Panel- and DIN-rail mount or open card fixation
    • CV/CC: constant voltage; constant current limited
    • -40°C to +85°C operating temperature ratings
    • OVC III rated up to 3000m Altitude
    46 RECOM | RACM16E-K/277 Series | AC/DC, Single Output
    Focus
    (9 products)
    • CV/CC: constant voltage; constant current limited
    • 100-277VAC input range with full load up to 65°C
    • -40°C to +85°C operating temperature ratings
    • OVC III rated up to 3000m Altitude
    47 RECOM | RACM230-G Series | AC/DC, Connector, 230W, Single Output
    Focus
    (10 products)
    • 160W baseplate-cooled, fan-less operation
    • 230W peak power or forced air rating
    • Universal AC input range (80~264Vac)
    • Standby power consumption <0.5W
    48 RECOM | RACM30-K/277 Series | AC/DC, 30W
    Focus
    (29 products)
    • OVC III up to 5000m and LPS
    • Meets EN55032 “B” floating or earth coupled load
    • Full load power: -40 to +60°C
    • Reduced load rating to 90°C
    49 RECOM | RACM40-K Series | AC/DC, Single Output
    Focus
    (35 products)
    • 1.6“x3“, open card units; optional 2“x3“
    • 1.8“x3.2“, encapsulated modules
    • 40W power from -40°C up to +65°C ambient
    • Operating temp. up to +85°C with derating
    50 RECOM | RACM550-G Series | AC/DC, Connector/Screw Terminal, 550W, Single Output
    Focus
    (8 products)
    • 300W baseplate-cooled, fan-less operation
    • 550W peak power or forced air rating
    • Universal AC input range (80~264VAC)
    • Standby power consumption <0.5W
    51 RECOM | RACM60-K Series | AC/DC, Single Output
    Focus
    (24 products)
    • Input Range: 80-264VAC or 80-305VAC
    • Temperature rang: -40 to +85°C with derating
    • Over voltage category OVC III
    • 2MOPP medical certified B and BF compliant
    52 RECOM | RACM600-L Series | AC/DC, Connector/Screw Terminal, 600W, Single Output
    Focus
    (3 products)
    • Up to 450 Watt convection cooled output
    • Up to 800 Watt dynamic load supply
    • 5VSB output (always on)
    • Remote sensing, CTRL ON/OFF, PMBus
    53 RECOM | RACM65S-K/277 Series | AC/DC, Single Output
    Focus New
    (21 products)
    • Extended input: 90-305VAC
    • 65 watts with 11 W/in³ or 20 W/in³ density
    • OVC III up to 3000 or 5000m altitude
    • Thermally effective basplate on 1.5 x 3 inch footprint
    54 RECOM | RACM90-K Series | AC/DC, Connector, 90W, Single Output
    Focus
    (10 products)
    • Wide range input: 85-264VAC
    • Operating temperature from -40°C to +90°C
    • OVC III and LPS rated
    • 2MOPP medical certified, B and BF compliant
    55 RECOM | RACPRO1-4SP Series | AC/DC, DIN-Rail, 4 Channels Output
    Focus
    (2 products)
    • Push-in connectors for tool-less wiring
    • Start-Up delay adjustable by switch
    • NEC Class 2 limit switchable (for 5A module)
    • Adjustable power limit & load indication by LED
    56 RECOM | RACPRO1-RD Series | AC/DC, DIN-Rail, Single Output
    Focus New
    (1 product)
    • スリムデザイン(幅 43mm)に 25° プッシュインコネクタ搭載
    • 迅速な工具不要型取り付け
    • 取り外しに対応・広範囲 DC 入力電圧(9V~56V)に対応
    • 12V、24V、48V 電源との連携運転が可能
    57 RECOM | RACPRO1-S120 Series | AC/DC, DIN-Rail, 120W, Single Output
    Focus New
    (3 products)
    • 市場で最もコンパクトな 120W DIN レールマウント電源装置
    • 最高電力密度 500W / リットルまで・スリムデザイン(幅 28mm)に 25° プッシュインコネクタ搭載
    • DC 入力電圧範囲 88-370VDC
    • 最高効率 93.3% まで
    58 RECOM | RACPRO1-S240 Series | AC/DC, DIN-Rail, 240W, Single Output
    Focus New
    (1 product)
    • スリムデザイン(幅 39mm)に 25° プッシュインコネクタ搭載
    • 力率補正機能搭載(力率>0.95)
    • 入力突入電流アクティブ制限機能
    • DC 入力電圧範囲 88-370VDC
    59 RECOM | RACPRO1-S240E Series | AC/DC, DIN-Rail, 240W, Single Output
    Focus New
    (3 products)
    • スリムデザイン(幅 39mm)に 25° プッシュインコネクタ搭載
    • 入力突入電流アクティブ制限機能
    • 分割 AC 入力対応(85V~132VAC 及び 170V~277VAC)
    • 最高効率 94% まで
    60 RECOM | RACPRO1-S480 Series | AC/DC, DIN-Rail, 480W, Single Output
    Focus New
    (2 products)
    • スリムデザイン(幅 52mm)に 25° プッシュインコネクタ搭載
    • 力率補正機能搭載(力率 0.95)
    • 入力突入電流アクティブ制限機能
    • DC 入力電圧範囲 88-370VDC
    61 RECOM | RACPRO1-T240 Series | AC/DC, DIN-Rail, 240W, Single Output
    Focus
    (1 product)
    • Slim Design (43mm) with 25° Push-In connectors
    • Fast tool-less mounting and demounting
    • Active Inrush Current Limitation
    • 2-phase AC operation 2x350V to 2x575V
    62 RECOM | RACPRO1-T480 Series | AC/DC, DIN-Rail, 480W, Single Output
    Focus
    (2 products)
    • Slim Design (52mm) with 25° Push-In connectors
    • Fast tool-less mounting and demounting
    • PFC >0.9 and Active Inrush Current Limitation
    • DC-Input Range 430V to 815V/850V 10s
    63 RECOM | RACPRO1-T960 Series | AC/DC, DIN-Rail, 960W, Single Output
    Focus
    (2 products)
    • Slim Design (80mm) with 25° Push-In connectors
    • Fast tool-less mounting and demounting
    • PFC >0.9 and Active Inrush Current Limitation
    • DC-Input Range 430V to 815V/850V 10s
    64 RECOM | RACV22-W Series | AC/DC, Chassis mounting, 22W, Single Output
    Focus
    (1 product)
    • Power supply for stationary railroad systems
    • LED driver for trackside railroad lighting
    • Applicable for low trackside lighting (nGgB) DB InfraGO AG
    • Housing with connection box in protection class IP65
    65 RECOM | RB Series | DC/DC, THT, 1W
    Focus
    (240 products)
    • Low cost 1W converter
    • Power sharing on dual output versions
    • 1kVDC/1s or 2kVDC/1s isolation option
    • Optional continuous short circuit protection
    66 RECOM | RBA-026 Series | TRANSFORMER, SMD
    Focus New
    (2 products)
    • Small-Sized Isolation Transformer
    • SMD Surface Mount Installation
    • Isolation Voltage: 6000VDC/1minute
    • Operating Temperature: -40~125°C
    67 RECOM | RBBA3000 Series | DC/DC, THT, 3000W, Single Output
    Focus
    (1 product)
    • Non-isolated buck/boost converter
    • Up to 3000W in half brick case
    • Adjustable output voltage and current
    • Efficiency up to 96%
    68 RECOM | RBE Series | DC/DC, THT, 1W, Single Output
    Focus
    (1 product)
    • 1:1 input range
    • Low cost 1W converter
    • Efficiency up to 76%
    • -40°C to +85°C operating temperature range
    69 RECOM | RBE-011 Series | TRANSFORMER, SMD
    Focus New
    (2 products)
    • Small-sized isolation transformer
    • SMD surface mount installation
    • Isolation voltage: 1500VDC/1minute
    • Operating temperature: -40~125°C
    70 RECOM | RBE-014 Series | TRANSFORMER, SMD
    Focus New
    (2 products)
    • Small-sized isolation transformer
    • SMD surface mount installation
    • Isolation voltage: 1500VDC/1minute
    • Operating temperature: -40~125°C
    71 RECOM | RBE-017 Series | TRANSFORMER, SMD
    Focus New
    (2 products)
    • Small-sized isolation transformer
    • SMD surface mount installation
    • Isolation voltage: 3000VDC/1minute
    • Operating temperature: -40~125°C
    72 RECOM | RBE-023 Series | TRANSFORMER, SMD
    Focus New
    (2 products)
    • Small-sized isolation transformer
    • SMD surface mount installation
    • Isolation voltage: 1500VDC/1minute
    • Operating temperature: -40~125°C
    73 RECOM | RBE-024 Series | TRANSFORMER, SMD
    Focus New
    (2 products)
    • Small-sized isolation transformer
    • SMD surface mount installation
    • Isolation voltage: 1500VDC/1minute
    • Operating temperature: -40~125°C
    74 RECOM | RBE-025 Series | TRANSFORMER, SMD
    Focus New
    (2 products)
    • Small-sized isolation transformer
    • SMD surface mount installation
    • Isolation voltage: 1500VDC/1minute
    • Operating temperature: -40~125°C
    75 RECOM | RBE-027 Series | TRANSFORMER, SMD
    Focus New
    (2 products)
    • Small-sized isolation transformer
    • SMD surface mount installation
    • Isolation voltage: 1500VDC/1minute
    • Operating temperature: -40~125°C
    76 RECOM | RBE-029 Series | TRANSFORMER, SMD
    Focus New
    (2 products)
    • Small-sized isolation transformer
    • SMD surface mount installation
    • Isolation voltage: 1500VDC/1minute
    • Operating temperature: -40~125°C
    77 RECOM | RBE-030 Series | TRANSFORMER, SMD
    Focus New
    (2 products)
    • Small-sized isolation transformer
    • SMD surface mount installation
    • Isolation voltage: 1500VDC/1minute
    • Operating temperature: -40~125°C
    78 RECOM | RBE-038 Series | TRANSFORMER, SMD
    Focus New
    (2 products)
    • Small-sized isolation transformer
    • SMD surface mount installation
    • Isolation voltage: 1500VDC/1minute
    • Operating temperature: -40~125°C
    79 RECOM | RCD-24 Series | DC/DC, Single Output
    Focus
    (45 products)
    • UL/ RAILWAYS Certified Constant Current LED Driver
    • Wide Input and Output Voltage Range
    • Digital PWM and Analogue Voltage Dimming
    • Short Circuit Protected
    80 RECOM | RCDE-48 Series | DC/DC, THT, Single Output
    Focus
    (3 products)
    • Low cost buck LED driver
    • 6-60V input
    • Constant current output (350, 700 or 1050mA)
    • Digital PWM and analogue voltage dimming
    81 RECOM | REC10K-AW Series | DC/DC, THT, 10W
    Focus
    (20 products)
    • Industry standard 10W 1”x1” package
    • Derates to 100°C ambient temperature
    • Wide 4:1 input
    • ON/OFF control pin, UVLO, SCP
    82 RECOM | REC10K-RW Series | DC/DC, THT
    Focus
    (20 products)
    • 産業標準の 10W DIP24 パッケージ
    • 環境温度 100°C まで減額動作可能
    • 4:1 の広い入力電圧範囲
    • ON/OFF 制御ピン、低電圧ロックアウト(UVLO)、短絡保護(SCP)機能搭載
    83 RECOM | REC150H-UW Series | DC/DC, THT, 150W, Single Output
    Focus
    (5 products)
    • 150W DC/DC converter in Half Brick format
    • 9-75VDC ultra wide input voltage range
    • 2.5kVDC/1 minute insulation
    • Efficiency up to 89.5%
    84 RECOM | REC20K-Z Series | DC/DC, THT, 20W
    Focus
    (16 products)
    • Industry standard 20W 1”x1” package
    • Derates to 105°C ambient temperature
    • Wide 4:1 input
    • ON/OFF control pin, UVLO, SCP
    85 RECOM | REC300H-W Series | DC/DC, THT, 300W, Single Output
    Focus
    (4 products)
    • 300W DC/DC converter in Half Brick format
    • 9-36VDC wide input voltage range
    • 3kVDC/1 minute insulation
    • Fully protected with UVLO, SCP, OVP, and OLP
    86 RECOM | REC30E-Z Series | DC/DC, THT, 30W
    Focus
    (14 products)
    • 30W in a 1”x1” case
    • 4:1 wide input voltage range
    • 2kVDC/1min isolation
    • IEC/EN62638-1certified
    87 RECOM | REC30K Series | DC/DC, THT, 30W
    Focus
    (27 products)
    • Industry standard 30W 1”x1” package
    • Derates to 105°C ambient temperature
    • Wide 2:1 and 4:1 input ranges
    • ON/OFF control pin, UVLO, SCP
    88 RECOM | REC3A-W Series | DC/DC, THT, 3W, Single Output
    Focus
    (4 products)
    • 2:1 input voltage range
    • Efficiency up to 81%
    • EMI Class A without external components
    • Continuous short circuit protection
    89 RECOM | REC5A-W Series | DC/DC, THT, 5W, Single Output
    Focus
    (4 products)
    • 2:1 input voltage range
    • Efficiency up to 81%
    • EMI Class A without external components
    • Continuous short circuit protection
    90 RECOM | REC5K-AW Series | DC/DC, THT, 5W, Single Output
    Focus
    (1 product)
    • 4kVDC/1sec isolation
    • Industry standard 5W 1”x1” package
    • Feedback regulated output
    • Derates to 110°C ambient temperature
    91 RECOM | REC5K-RW Series | DC/DC, THT, 5W, Single Output
    Focus
    (2 products)
    • 4kVDC/1sec isolation
    • Industry standard 5W DIP24 package
    • Low ripple and noise
    • Derates to 110°C ambient temperature
    92 RECOM | REC6A-W Series | DC/DC, THT, 6W, Single Output
    Focus
    (4 products)
    • 2:1 input voltage range
    • Efficiency up to 80%
    • EMI Class A without external components
    • Continuous short circuit protection
    93 RECOM | REC6K-AW Series | DC/DC, THT
    Focus New
    (18 products)
    • Industry standard 6W 1”x1” package
    • Derates to 105°C ambient temperature
    • Wide 4:1 input
    • ON/OFF control pin, UVLO, SCP
    94 RECOM | REC6K-RW Series | DC/DC, THT
    Focus New
    (18 products)
    • Industry standard 6W DIP24 package
    • Derates to 105°C ambient temperature
    • Wide 4:1 input
    • UVLO, SCP
    95 RECOM | REDIIN120 Series | AC/DC, DIN-Rail, 120W, Single Output
    Focus
    (3 products)
    • Universal input voltage range 90-264VAC
    • Built-In constant current circuit
    • Three output variations 12V, 24V and 48V available
    • Adjustable output voltage range ±10%
    96 RECOM | REDIIN240 Series | AC/DC, DIN-Rail, 240W, Single Output
    Focus
    (2 products)
    • Universal input voltage range 90-264VAC
    • Built-In constant current circuit
    • Two output variations 24V and 48V available
    • Adjustable output voltage range ±10%
    97 RECOM | REDIIN480 Series | AC/DC, DIN-Rail, 480W, Single Output
    Focus
    (2 products)
    • Universal input voltage range 90-264VAC
    • Built-In constant current circuit
    • Power Factor >0.96 115VAC & >0.93 230VAC
    • Two adjustable output variations 24-28V & 48-55V
    98 RECOM | REE Series | DC/DC, THT, 1W, Single Output
    Focus
    (1 product)
    • Low cost 1W converter
    • 1:1 input voltage range
    • SIP7 package
    • Efficiency up to 76%
    99 RECOM | REFIN2U-S Series | AC/DC, DIN-Rail/Mounting Flanges, Single Output
    Focus New
    (3 products)
    • 広範囲 AC 入力対応(85-276VAC)
    • 2U 幅(36mm)/重量 151g
    • プッシュインコネクタ搭載
    • 連続出力電力:120V 入力時 90W(40°C 環境)/230V 入力時 90W(60°C 環境)
    100 RECOM | REM1 Series | DC/DC, THT, 1W, Single Output
    Focus
    (12 products)
    • Medical grade DC/DC converter
    • 250VAC working, 2MOPP
    • 5.2kVDC isolation for 250VAC working voltage
    • -40°C up to +90°C operating temperature
    101 RECOM | REM10 Series | DC/DC, THT, 10W
    Focus
    (96 products)
    • Reinforced insulation for 250VAC working voltage
    • Clearance and creepage distance: 8mm
    • 5kVAC I/P to O/P 2MOPP isolation
    • 2µA patient leakage current
    102 RECOM | REM2A Series | DC/DC, 2W
    Focus
    (64 products)
    • 2MOPP, 250VAC working voltage isolation
    • Clearance and creepage distance ≥8mm
    • Up to 5kVAC/1min reinforced insulation
    • IEC/EN/UL 60601 and 62368-1 certified
    103 RECOM | REM3.5E Series | DC/DC, 3.5W
    Focus
    (360 products)
    • 2MOPP, 250VAC working voltage isolation
    • Clearance and creepage distance >8mm
    • Up to 10kVDC reinforced insulation
    • IEC/EN/UL 60601 certified with CB Report (3rd Ed. Safety, 4th Ed. EMC)
    104 RECOM | REM4A Series | DC/DC, 4W
    Focus
    (56 products)
    • 2MOPP, 250VAC working voltage isolation
    • Clearance and creepage distance ≥8mm
    • Up to 5kVAC/1min reinforced insulation
    • IEC/EN/UL 60601 and 62368-1 certified
    105 RECOM | REM5E Series | DC/DC, 5W
    Focus
    (360 products)
    • 2MOPP, 250VAC working voltage isolation
    • Clearance and creepage distance >8mm
    • Up to 10kVDC reinforced insulation
    • IEC/EN/UL 60601 certified with CB Report (3rd Ed. Safety, 4th Ed. EMC)
    106 RECOM | REM60-W Series | DC/DC, THT, 60W
    Focus
    (14 products)
    • Reinforced insulation for 250VAC working voltage
    • Clearance and creepage distance >8.0mm
    • 5kVAC I/P to O/P 2MOPP isolation
    • 4.5µA maximum patient leakage current
    107 RECOM | REM6E Series | DC/DC, 6W
    Focus
    (210 products)
    • 2MOPP, 250VAC working voltage isolation
    • Clearance and creepage distance >8mm
    • Up to 10kVDC reinforced insulation
    • IEC/EN/UL 60601 certified with CB Report (3rd Ed. Safety, 4th Ed. EMC)
    108 RECOM | RFB Series | DC/DC, THT, 1W, Single Output
    Focus
    (1 product)
    • Low cost 1W converter
    • 1:1 input voltage range
    • SIP7 package
    • 1kVDC isolation
    109 RECOM | RFM Series | DC/DC, THT, 1W, Single Output
    Focus
    (1 product)
    • Low cost 1W converter
    • Industry standard pinout
    • SIP4 package
    • 1kVDC isolation
    110 RECOM | RFMM Series | DC/DC, THT, 1W, Single Output
    Focus
    (1 product)
    • Low cost 1W converter
    • Industry standard pinout
    • SIP7 package
    • 4kVDC isolation
    111 RECOM | RK Series | DC/DC, THT, 1W, Single Output
    Focus
    (64 products)
    • 3kVDC/1s or 4kVDC/1s isolation
    • Optional continuous short circuit protection
    • UL94V-0 package material
    • Efficiency up to 84%
    112 RECOM | RKE Series | DC/DC, THT, 1W, Single Output
    Focus
    (3 products)
    • Low cost
    • 1:1 Input voltage range
    • Efficiency up to 81%
    • 4kVDC/1 second isolation
    113 RECOM | RKK Series | DC/DC, THT, 1W, Single Output
    Focus
    (1 product)
    • Low cost
    • 1:1 Input voltage range
    • Efficiency up to 82%
    • 4kVDC/1 second isolation
    114 RECOM | RKZE Series | DC/DC, THT, 2W
    Focus
    (112 products)
    • Low cost 2W converter
    • Industry standard SIP7 package
    • 3kVDC or 4kVDC isolation options
    • Single or dual outputs
    115 RECOM | RMD150-UW Series | DC/DC, Chassis mounting, 150W, Single Output
    Focus
    (2 products)
    • Fully EN50155 compliant, no external circuits
    • Ultra-wide input range 11:1 reduces product variety
    • Excellent efficiency, lowest power loss, full lifetime
    • Full power up to +85° without heat sink, no derating
    116 RECOM | RMD300-UW Series | DC/DC, Chassis mounting, 300W, Single Output
    Focus
    (3 products)
    • Fully EN50155 compliant, no external circuits
    • Ultra-wide input range 11:1 reduces product variety
    • Excellent efficiency, lowest power loss, full lifetime
    • Full power up to +85° without heat sink, no derating
    117 RECOM | RMD40-UW Series | DC/DC, 40W, Single Output
    Focus New
    (4 products)
    • Fully EN50155 compliant, no external circuits
    • Ultra-wide input range 11:1 reduces product variety
    • Excellent efficiency, lowest power loss, full lifetime
    • Active input reverse polarity protection
    118 RECOM | RMD500-EW Series | DC/DC, Chassis mounting, 500W, Single Output
    Focus
    (1 product)
    • Fully railway approved for EN50155 (S2) applications
    • EN50121-3-2, EN50124-1, EN62368-1, EN61373, EN45545-2
    • Plug&Play unit for natural convection cooling
    • Wide range input for nominal 72V and 110V
    119 RECOM | RMD75-UW Series | DC/DC, 75W, Single Output
    Focus New
    (4 products)
    • Fully EN50155 compliant, no external circuits
    • Ultra-wide input range 11:1 reduces product variety
    • Excellent efficiency, lowest power loss, full lifetime
    • Active input reverse polarity protection
    120 RECOM | RMOD300-UW Series | DC/DC, Connector, 300W, Single Output
    Focus
    (11 products)
    • Ultra wide input voltage range (18-106VDC)
    • IP67 protection for selective model
    • Operating temperature range: -40°C to +75°C
    • Input Reverse Polarity Protection
    121 RECOM | RMOD360-UW Series | DC/DC, Connector, 360W, Single Output
    Focus
    (2 products)
    • Ultra wide input voltage range (18-106VDC)
    • IP67 protection for selective model
    • Operating temperature range: -40°C to +75°C
    • Input Reverse Polarity Protection
    122 RECOM | RMOD400-EW Series | DC/DC, Connector, 400W, Single Output
    Focus
    (1 product)
    • On-Board DC/DC Converter
    • E-Mobility and industry vehicles
    • Very wide input voltage range for 48V / 80V / 96V
    • Plug & Play, ready to use
    123 RECOM | RMOD400-W Series | DC/DC, Connector, 400W, Single Output
    Focus
    (2 products)
    • On-Board DC/DC Converter
    • E-Mobility and industry vehicles
    • Wide input voltage range for 24V/36V or 48V/80V
    • Plug & Play, ready to use
    124 RECOM | RMOD4000-EW Series | DC/DC, Connector, Single Output
    Focus
    (2 products)
    • High voltage DC/DC converter for E-Mobility
    • Covering input voltage range 180-950VDC
    • IP67 protection acc. to ISO 20653
    • EN62477-1, ISO 6469-3, ECE-R10/100
    125 RECOM | RMOD600-EW Series | DC/DC, Connector, 600W, Single Output
    Focus
    (1 product)
    • On-Board DC/DC Converter
    • E-Mobility and industry vehicles
    • Very wide input voltage range for 48V / 80V / 96V
    • Plug & Play, ready to use
    126 RECOM | RMOD600-W Series | DC/DC, Connector, 600W, Single Output
    Focus
    (1 product)
    • On-Board DC/DC Converter
    • E-Mobility and industry vehicles
    • Very wide input voltage range for 48V / 80V
    • Plug & Play, ready to use
    127 RECOM | RMR-003 Series | TRANSFORMER, SMD
    Focus New
    (2 products)
    • Small-sized isolation transformer
    • SMD surface mount installation
    • Isolation voltage: 1500VDC/1minute
    • Operating temperature: -40~125°C
    128 RECOM | RMR-004 Series | TRANSFORMER, SMD
    Focus New
    (2 products)
    • Small-sized isolation transformer
    • SMD surface mount installation
    • Isolation voltage: 3000VDC/1minute
    • Operating temperature: -40~125°C
    129 RECOM | RMR-005 Series | TRANSFORMER, SMD
    Focus New
    (2 products)
    • Small-sized isolation transformer
    • SMD surface mount installation
    • Isolation voltage: 1500VDC/1minute
    • Operating temperature: -40~125°C
    130 RECOM | RMR-006 Series | TRANSFORMER, SMD
    Focus New
    (2 products)
    • Small-sized isolation transformer
    • SMD surface mount installation
    • Isolation voltage: 1500VDC/1minute
    • Operating temperature: -40~125°C
    131 RECOM | RMR-007 Series | TRANSFORMER, SMD
    Focus New
    (2 products)
    • Small-sized isolation transformer
    • SMD surface mount installation
    • Isolation voltage: 1500VDC/1minute
    • Operating temperature: -40~125°C
    132 RECOM | RMR-008 Series | TRANSFORMER, SMD
    Focus New
    (2 products)
    • Small-sized isolation transformer
    • SMD surface mount installation
    • Isolation voltage: 3000VDC/1minute
    • Operating temperature: -40~125°C
    133 RECOM | RMR-009 Series | TRANSFORMER, SMD
    Focus New
    (2 products)
    • Small-sized isolation transformer
    • SMD surface mount installation
    • Isolation voltage: 1500VDC/1minute
    • Operating temperature: -40~125°C
    134 RECOM | RMR-010 Series | TRANSFORMER, SMD
    Focus New
    (2 products)
    • Small-sized isolation transformer
    • SMD surface mount installation
    • Isolation voltage: 3000VDC/1minute
    • Operating temperature: -40~125°C
    135 RECOM | RMR-012 Series | TRANSFORMER, SMD
    Focus New
    (2 products)
    • Small-sized isolation transformer
    • SMD surface mount installation
    • Isolation voltage: 4500VAC/1minute
    • Operating temperature: -40~125°C
    136 RECOM | RMR-013 Series | TRANSFORMER, SMD
    Focus New
    (2 products)
    • Small-sized isolation transformer
    • SMD surface mount installation
    • Isolation voltage: 3000VDC/1minute
    • Operating temperature: -40~125°C
    137 RECOM | RMR-015 Series | TRANSFORMER, SMD
    Focus New
    (2 products)
    • Small-sized isolation transformer
    • SMD surface mount installation
    • Isolation voltage: 1500VDC/1minute
    • Operating temperature: -40~125°C
    138 RECOM | RMR-016 Series | TRANSFORMER, SMD
    Focus New
    (2 products)
    • Small-sized isolation transformer
    • SMD surface mount installation
    • Isolation voltage: 3000VDC/1minute
    • Operating temperature: -40~125°C
    139 RECOM | RMR-018 Series | TRANSFORMER, SMD
    Focus New
    (2 products)
    • Small-sized isolation transformer
    • SMD surface mount installation
    • Isolation voltage: 5000VAC/1minute
    • Operating temperature: -40~125°C
    140 RECOM | RMR-020 Series | TRANSFORMER, SMD
    Focus New
    (2 products)
    • Small-sized isolation transformer
    • SMD surface mount installation
    • Isolation voltage: 3000VDC/1minute
    • Operating temperature: -40~125°C
    141 RECOM | RMR-028 Series | TRANSFORMER, SMD
    Focus New
    (2 products)
    • Small-sized isolation transformer
    • SMD surface mount installation
    • Isolation voltage: 5000VAC/1minute
    • Operating temperature: -40~125°C
    142 RECOM | RMR-031 Series | TRANSFORMER, SMD
    Focus New
    (2 products)
    • Small-sized isolation transformer
    • SMD surface mount installation
    • Isolation voltage: 5000VAC/1minute
    • Operating temperature: -40~125°C
    143 RECOM | RMR-039 Series | TRANSFORMER, SMD
    Focus New
    (2 products)
    • Small-sized isolation transformer
    • SMD surface mount installation
    • Isolation voltage: 1500VDC/1minute
    • Operating temperature: -40~125°C
    144 RECOM | ROE Series | DC/DC, THT, 1W, Single Output
    Focus
    (7 products)
    • Low cost 1W converter
    • Industry standard pinout
    • SIP4 package
    • 1kVDC isolation
    145 RECOM | ROF-78K-0.5 Series | DC/DC, SMD (pinless), Single Output
    Focus New
    (7 products)
    • Low cost
    • Low profile 4.5mm
    • Efficiency up to 95%
    • -40°C to +105°C operating temperature range
    146 RECOM | RP Series | DC/DC, THT, 1W
    Focus
    (180 products)
    • Pot-core transformer - separated windings
    • High 5.2kVDC/1s isolation in compact size
    • Optional continuous short circuit protection
    • Efficiency up to 85%
    147 RECOM | RP03-RAW Series | DC/DC, THT, 3W
    Focus
    (8 products)
    • Ultra wide 4:1 input range (36-160VDC)
    • Certified for Railway applications (EN50155)
    • -40°C to +105°C operating temperature with derating
    • Input under voltage lockout
    148 RECOM | RP06-RAW Series | DC/DC, THT, 6W
    Focus
    (8 products)
    • Ultra wide 4:1 input range (36-160VDC)
    • Certified for Railway applications (EN50155)
    • -40°C to +105°C operating temperature with derating
    • Input under voltage lockout
    149 RECOM | RP08-AW Series | DC/DC, 8W
    Focus
    (42 products)
    • 4:1 Wide input voltage range
    • 1.6kVDC isolation
    • UL60950-1, EN50155 certified
    • Efficiency up to 88%
    150 RECOM | RP10-RAW Series | DC/DC, THT, 10W
    Focus
    (9 products)
    • Ultra wide 4:1 input range (36-160VDC)
    • Certified for Railway applications (EN50155)
    • -40°C to +105°C operating temperature with derating
    • Input under voltage lockout
    151 RECOM | RP40Q-RUW Series | DC/DC, THT, 40W, Single Output
    Focus
    (40 products)
    • 12:1 ultra wide input voltage range
    • 3kVAC/1 minute reinforced insulation
    • High efficiency over entire input voltage range
    • -40°C to +85°C temperature range without derating
    152 RECOM | RP60Q-RUW Series | DC/DC, THT, 60W, Single Output
    Focus
    (40 products)
    • 12:1 ultra wide input voltage range
    • 3kVAC/1 minute reinforced insulation
    • High efficiency over entire input voltage range
    • -40°C to +68°C temperature range without derating
    153 RECOM | RPA100E-W Series | DC/DC, THT, 100W, Single Output
    Focus
    (2 products)
    • Eighth brick format
    • 4:1 input voltage range
    • 1.5kV basic isolation
    • Remote ON/OFF, sense, and trim pins
    154 RECOM | RPA20-FR Series | DC/DC, THT, 20W
    Focus
    (16 products)
    • Internal EN55032 Class A filter
    • 4:1 wide input voltage range
    • 3kVAC/1 minute reinforced insulation
    • High efficiency over entire input voltage range
    155 RECOM | RPA300E Series | DC/DC, THT, 300W, Single Output
    Focus
    (1 product)
    • Eighth brick format
    • 36-72VDC input voltage range
    • 2.25kV basic isolation
    • Remote ON/OFF, sense, and trim pins
    156 RECOM | RPA40-FR Series | DC/DC, THT, 40W
    Focus
    (7 products)
    • Wide 36-160VDC input voltage range
    • 3kVAC/1min reinforced isolation
    • Typical efficiency up to 90%
    • Six-sided continuous shield
    157 RECOM | RPE-021 Series | TRANSFORMER, THT
    Focus New
    (1 product)
    • THD Plugin Installation
    • Isolation Voltage: 4300VAC/1minute
    • Operating Temperature: -40~70°C
    • Storage humidity: -40~125°C
    158 RECOM | RPH-3.0 Series | DC/DC, SMD (pinless), 15W, Single Output
    Focus
    (2 products)
    • Buck regulator power module with integrated shielded inductor
    • 55V maximum input voltage
    • Programmable 1 - 15V output voltage
    • 3A maximum output current
    159 RECOM | RPH-3.0-EVM-1 Series | DC/DC, 15W, Single Output
    Focus
    (1 product)
    • Evaluation platform for RPH-3.0 Buck Regulator Module
    • Thermal design considerations included
    • EMI Class B filter
    • Easy evaluation of control, power good, and sensing functions
    160 RECOM | RPL-1.0 Series | DC/DC, SMD (pinless), 5W, Single Output
    Focus
    (2 products)
    • Wide input range (3 - 22V)
    • Low profile 2mm
    • Small footprint 3x3mm
    • Adjustable output 0.6 to 12V
    161 RECOM | RPL-1.0-EVM-1 Series | DC/DC, 5W, Single Output
    Focus
    (1 product)
    • Evaluation platform for RPL-1.0 Buck Regulator Module
    • Thermal design considerations included
    • EMI Class B filter
    • Easy evaluation of control, power good, soft-start, and sensing functions
    162 RECOM | RPL-10 Series | DC/DC, SMD (pinless), 50W, Single Output
    Focus
    (2 products)
    • High power density (10A in 7x7x4.4mm)
    • Operating temperature of -40°C to +90°C at full load
    • High efficiency 94%
    • Wide 4-16VDC input voltage
    163 RECOM | RPL-10-EVM-1 Series | DC/DC, 50W, Single Output
    Focus
    (1 product)
    • Evaluation platform for RPL-10(20) Buck Regulator Module
    • Thermal design considerations included
    • EMI Class B filter
    • Easy evaluation of output voltage selection, control and sensing functions
    164 RECOM | RPL-20 Series | DC/DC, SMD (pinless), 100W, Single Output
    Focus
    (2 products)
    • High power density (7 x 7 x 4.4mm)
    • Operating temperature of -40°C to +90°C at full load
    • High efficiency 94%
    • Wide 4-16VDC input voltage
    165 RECOM | RPL-20-EVM-1 Series | DC/DC, 100W, Single Output
    Focus
    (1 product)
    • Evaluation platform for RPL-10(20) Buck Regulator Module
    • Thermal design considerations included
    • EMI Class B filter
    • Easy evaluation of output voltage selection, control and sensing functions
    166 RECOM | RPL-3.0 Series | DC/DC, SMD (pinless), 15W, Single Output
    Focus
    (2 products)
    • Wide input range (4 - 18V)
    • Low profile 1.45mm
    • Small footprint 3x3mm
    • Adjustable output 0.8 to 5.2V
    167 RECOM | RPL-3.0-EVM-1 Series | DC/DC, 15W, Single Output
    Focus
    (1 product)
    • Evaluation platform for RPL-3.0 Buck Regulator Module
    • Thermal design considerations included
    • EMI Class A filter
    • Easy evaluation of output voltage selection, control, power good and sensing functions
    168 RECOM | RPL-5.0 Series | DC/DC, SMD (pinless), 25W, Single Output
    Focus
    (2 products)
    • Buck regulator power module with integrated shielded inductor
    • 17V maximum input voltage
    • Programmable 0.6 - 12V output voltage
    • 5A maximum output current
    169 RECOM | RPL-5.0-EVM-1 Series | DC/DC, 25W, Single Output
    Focus
    (1 product)
    • Evaluation platform for RPL-5.0 Buck Regulator Module
    • Thermal design considerations included
    • EMI Class B filter
    • Easy evaluation of control, power good, soft-start, and sensing functions
    170 RECOM | RPM-1.0 Series | DC/DC, SMD (pinless), Single Output
    Focus
    (4 products)
    • High power density (L*W*H = 12.19*12.19*3.75)
    • Wide operating temperature -40°C to +107°C at full load
    • Efficiency up to 99%, no need for heatsinks
    • 6-sided shielding
    171 RECOM | RPM-2.0 Series | DC/DC, SMD (pinless), Single Output
    Focus
    (4 products)
    • High power density (L*W*H = 12.19*12.19*3.75)
    • Wide operating temperature -40°C to +105°C at full load
    • Efficiency up to 98%, no need for heatsinks
    • 6-sided shielding
    172 RECOM | RPM-3.0 Series | DC/DC, SMD (pinless), Single Output
    Focus
    (4 products)
    • High power density (L*W*H = 12.19*12.19*3.75)
    • Wide operating temperature -40°C to +105°C at full load
    • Efficiency up to 97%, no need for heatsinks
    • 6-sided shielding
    173 RECOM | RPM-6.0 Series | DC/DC, SMD (pinless), Single Output
    Focus
    (4 products)
    • High power density (L*W*H = 12.19*12.19*3.75)
    • Wide operating temperature -40°C to +90°C at full load
    • Efficiency up to 99%, no need for heatsinks
    • 6-sided shielding
    174 RECOM | RPMA-4.5 Series | DC/DC, THT, 22.5W, Single Output
    Focus
    (1 product)
    • 4.5A industrial grade non-isolated DC/DC
    • Compact, industry standard 1/32nd brick format
    • Efficiency up to 98%
    • 9-53V input voltage
    175 RECOM | RPMA-8.0 Series | DC/DC, THT, 40W, Single Output
    Focus
    (1 product)
    • 8A industrial grade non-isolated DC/DC
    • Compact, industry standard 1/32nd brick format
    • Efficiency up to 98%
    • 9-53V input voltage
    176 RECOM | RPMB-2.0 Series | DC/DC, SMD (pinless), Single Output
    Focus
    (8 products)
    • 36V 2A SMD Power Module
    • High power density in 12.2x12.2x3.75mm case
    • -40°C to +100°C with derating, convection cooled
    • Efficiency up to 94%
    177 RECOM | RPMB-3.0 Series | DC/DC, SMD (pinless), Single Output
    Focus
    (8 products)
    • 36V 3A SMD Power Module
    • High power density in 12.2x12.2x3.75mm case
    • -40°C to +100°C with derating, convection cooled
    • Efficiency up to 94%
    178 RECOM | RPMGE-10 Series | DC/DC, PCB Mounting Pins, Single Output
    Focus
    (2 products)
    • 10A non isolated eighth brick
    • 18 to 75VDC (90VDC, transient) wide input range
    • 3.3 to 15VDC adjustable output
    • Standard eighth brick format
    179 RECOM | RPMGH-40 Series | DC/DC, PCB Mounting Pins, Single Output
    Focus
    (2 products)
    • 40A non isolated half brick
    • 18 to 75VDC wide input range
    • 3.3 to 24VDC adjustable output
    • Standard half brick format
    180 RECOM | RPMGQ-20 Series | DC/DC, PCB Mounting Pins, Single Output
    Focus
    (2 products)
    • 20A non isolated quarter brick
    • 18 to 75VDC wide input range
    • 3.3 to 24VDC adjustable output
    • Standard industrial quarter brick format
    181 RECOM | RPMGS-20 Series | DC/DC, PCB Mounting Pins, Single Output
    Focus
    (2 products)
    • 20A non isolated sixteenth brick
    • 18 to 75VDC wide input range
    • 3.3 to 24VDC adjustable output
    • Standard sixteenth brick wide format
    182 RECOM | RPMH-0.5 Series | DC/DC, SMD (pinless), Single Output
    Focus
    (10 products)
    • Wide Vin 4.3 to 65VDC
    • High power density (LxWxH = 12.19x12.19x3.75)
    • Wide operating temperature -40°C to +95°C at full load
    • Efficiency up to 89%, no need for heatsinks
    183 RECOM | RPMH-1.5 Series | DC/DC, SMD (pinless), Single Output
    Focus
    (10 products)
    • Wide Vin 5 to 60VDC
    • High power density (LxWxH = 12.19x12.19x3.75)
    • Wide operating temperature -40°C to 100°C at full load
    • Efficiency up to 97%, no need for heatsinks
    184 RECOM | RPMVH-0.5 Series | DC/DC, SMD (pinless), Single Output
    Focus New
    (8 products)
    • Wide Vin 6V to 115VDC
    • Non isolated power module
    • High power density
    • Operating temperature -40°C to +100°C at full load
    185 RECOM | RPX-0.5Q Series | DC/DC, SMD (pinless), 2.5W, Single Output
    Focus
    (2 products)
    • AEC-Q100 qualified buck regulator power module with integrated shielded inductor
    • 36VDC input voltage, 0.5A output current
    • SCP, OCP, OTP, and UVLO protection
    • 3.0 x 5.0mm low profile QFN package with wettable flanks for optical inspection
    186 RECOM | RPX-0.5Q-EVM-1 Series | DC/DC, 2.5W, Single Output
    Focus
    (1 product)
    • Evaluation platform for RPX-0.5Q Buck Regulator Module
    • Thermal design considerations included
    • EMI Class B filter
    • Easy evaluation of output voltage selection, control and sensing functions
    187 RECOM | RPX-1.0 Series | DC/DC, SMD (pinless), 5W, Single Output
    Focus
    (2 products)
    • Buck regulator power module with integrated shielded inductor
    • 36VDC input voltage, 1A output current
    • SCP, OCP, OTP, and UVLO protection
    • 3.0 x 5.0mm low profile QFN package
    188 RECOM | RPX-1.5 Series | DC/DC, SMD (pinless), 7.5W, Single Output
    Focus
    (2 products)
    • Buck regulator power module with integrated shielded inductor
    • 36VDC input voltage, 1.5A output current
    • SCP, OCP, OTP, and UVLO protection
    • 3.0 x 5.0mm low profile QFN package
    189 RECOM | RPX-1.5Q Series | DC/DC, SMD (pinless), 7.5W, Single Output
    Focus
    (2 products)
    • AEC-Q100 qualified buck regulator power module with integrated shielded inductor
    • 36VDC input voltage, 1.5A output current
    • SCP, OCP, OTP, and UVLO protection
    • 3.0 x 5.0mm low profile QFN package
    190 RECOM | RPX-1.5Q-EVM-1 Series | DC/DC, 7.5W, Single Output
    Focus
    (1 product)
    • Evaluation platform for RPX-1.5Q Buck Regulator Module
    • Thermal design considerations included
    • EMI Class B filter
    • Easy evaluation of output voltage selection, control and sensing functions
    191 RECOM | RPX-2.5 Series | DC/DC, SMD (pinless), 12.5W, Single Output
    Focus
    (2 products)
    • Buck regulator power module with integrated shielded inductor
    • 28V maximum input voltage
    • 2.5A maximum output current
    • SCP, OCP, OTP, OVP and UVLO protection
    192 RECOM | RPX-4.0 Series | DC/DC, SMD (pinless), 20W, Single Output
    Focus
    (2 products)
    • Buck regulator power module with integrated shielded inductor
    • 36VDC input voltage, 4A output current
    • Programmable output voltage: 1 to 7V
    • Ultra-high power density: 5.0 x 5.5mm QFN footprint
    193 RECOM | RPX-4.0-EVM-1 Series | DC/DC, 20W, Single Output
    Focus
    (1 product)
    • Evaluation platform for RPX-4.0 buck regulator module
    • Thermal design considerations included
    • EMI class B filter
    • Easy evaluation of output voltage selection, control, and sensing functions
    194 RECOM | RPY-1.5Q Series | DC/DC, SMD (pinless), 7.5W, Single Output
    Focus
    (2 products)
    • AEC-Q100 qualified constant current power module with integrated shielded inductor
    • 36VDC input voltage buck regulator
    • 1.5A output current with 0-100% PWM dimming
    • SCP, OCP, OTP, and UVLO protection
    195 RECOM | RPY-1.5Q-EVM-1 Series | DC/DC, 7.5W, Single Output
    Focus
    (1 product)
    • Evaluation platform for RPY-1.5Q step-down LED Driver Module
    • Thermal design considerations included
    • CISPR25 Class 5 EMI filter
    • Easy evaluation of output current selection, PWM dimming and fault indication functions
    196 RECOM | RPZ-0.5 Series | DC/DC, SMD (pinless), 2.5W, Single Output
    Focus
    (2 products)
    • 2.3 - 5.5VDC input range
    • Low profile 1.6mm
    • Ultra-compact footprint 2x2mm
    • Adjustable output 0.6 to 5.375V
    197 RECOM | RPZ-0.5-EVM-1 Series | DC/DC, 2.5W, Single Output
    Focus
    (1 product)
    • Evaluation platform for RPZ-0.5/1.0 Buck Regulator Module
    • Thermal design considerations included
    • EMI Class B filter
    • Easy evaluation of output voltage selection, control and sensing functions
    198 RECOM | RPZ-1.0 Series | DC/DC, SMD (pinless), 5W, Single Output
    Focus
    (2 products)
    • 2.3 - 5.5VDC input range
    • Low profile 1.6mm
    • Ultra-compact footprint 2x2mm
    • Adjustable output 0.6 to 5.25V
    199 RECOM | RPZ-1.0-EVM-1 Series | DC/DC, 5W, Single Output
    Focus
    (1 product)
    • Evaluation platform for RPZ-0.5/1.0 Buck Regulator Module
    • Thermal design considerations included
    • EMI Class B filter
    • Easy evaluation of output voltage selection, control and sensing functions
    200 RECOM | RPZ-2.0 Series | DC/DC, SMD (pinless), 10W, Single Output
    Focus
    (2 products)
    • 2.75 - 6VDC input range
    • Low profile 1.6mm
    • Ultra-compact footprint 2.5x3.5mm
    • Adjustable output 0.6 to 5.74V
    201 RECOM | RPZ-2.0-EVM-1 Series | DC/DC, 10W, Single Output
    Focus
    (1 product)
    • Evaluation platform for RPZ-2.0 Buck Regulator
    • Module
    • Thermal design considerations included
    • EMI Class B filter
    202 RECOM | RPZ-3.0A Series | DC/DC, SMD (pinless), 15W, Single Output
    Focus
    (2 products)
    • Buck regulator power module with integrated shielded inductor
    • 6V maximum input voltage
    • Programmable 0.6 - 5.5V output voltage
    • 3A maximum output current
    203 RECOM | RPZ-3.0A-EVM-1 Series | DC/DC, 15W, Single Output
    Focus
    (1 product)
    • Evaluation platform for RPZ-3.0A Buck Regulator Module
    • Thermal design considerations included
    • EMI Class B filter
    • Easy evaluation of control, power good, and sensing functions
    204 RECOM | RPZ-6.0 Series | DC/DC, SMD (pinless), 30W, Single Output
    Focus
    (2 products)
    • Buck regulator power module with integrated shielded inductor
    • 7V maximum input voltage
    • Programmable 0.6 - 6.65V output voltage
    • 6A maximum output current
    205 RECOM | RPZ-6.0-EVM-1 Series | DC/DC, 30W, Single Output
    Focus
    (1 product)
    • Evaluation platform for RPZ-6.0 Buck Regulator
    • Module
    • Thermal design considerations included
    • EMI Class B filter
    206 RECOM | RS12-Z Series | DC/DC, THT, 12W, Single Output
    Focus
    (10 products)
    • 12W in SIP8 package
    • 3kVDC isolation
    • 4:1 input voltage range
    • Operating temperature from -40°C to +75°C with no derating and convection cooling only
    207 RECOM | RS3E Series | DC/DC, THT, 3W, Single Output
    Focus
    (24 products)
    • 2:1 wide input range
    • 3kVDC/1 minute isolation
    • -40°C to +70°C (full load) operating range
    • IEC/EN62368-1 2nd & 3rd Ed. certified
    208 RECOM | RS3K Series | DC/DC, THT, 3W
    Focus
    (20 products)
    • 4.5V-9VDC and 9V-36VDC Input voltage ranges
    • SIP8 package
    • Continuous short circuit protection
    • Operating temperature range up to 105°C
    209 RECOM | RSE Series | DC/DC, THT, 2W, Single Output
    Focus
    (2 products)
    • 2:1 Wide input range
    • 2kVDC/1 second isolation
    • -40°C To +75°C Operating temperature @ full load
    • Industry standard pinout (SIP8)
    210 RECOM | RSE-Z Series | DC/DC, THT, 2W, Single Output
    Focus
    (2 products)
    • 4:1 wide input range
    • 2kVDC/1 second isolation
    • -40°C to +75°C operating temperature @ full load
    • Industry standard pinout (SIP8)
    211 RECOM | RSH2 Series | DC/DC, SMD, 2W, Single Output
    Focus
    (80 products)
    • 2W power in compact SMD package
    • Operating temperature from -40°C to +85°C with no derating
    • 2kVDC or 3kVDC/1minute isolation voltage
    • UL/CSA/CAN 62368-1 certified
    212 RECOM | RSH3 Series | DC/DC, SMD, 3W
    Focus
    (48 products)
    • 3W power in compact SMD package
    • Operating temperature from -40°C to +81°C with no derating
    • 2kVDC or 3kVDC/1minute isolation voltage
    • IEC/EN/UL62368 3rd Edition certified
    213 RECOM | RSK-RUW Series | DC/DC, THT, 2W, Single Output
    Focus
    (2 products)
    • 8:1 wide input voltage range
    • SIP8 package
    • Continuous short circuit protection
    • No minimum load required
    214 RECOM | RSOE Series | DC/DC, THT, 1W, Single Output
    Focus
    (2 products)
    • 2:1 Wide input range
    • 2kVDC/1 second isolation
    • -40°C To +80°C operating temperature @ full load
    • Industry standard pinout (SIP8)
    215 RECOM | RSOE-Z Series | DC/DC, THT, 1W, Single Output
    Focus
    (2 products)
    • 4:1 wide input range
    • 2kVDC/1 second isolation
    • -40°C to +80°C operating temperature @ full load
    • Industry standard pinout (SIP8)
    216 RECOM | RSOK-Z Series | DC/DC, THT, 1W, Single Output
    Focus
    (2 products)
    • 4:1 wide input voltage range
    • SIP8 package
    • Continuous short circuit protection
    • No minimum load required
    217 RECOM | RTC2-RW Series | DC/DC, SMD, 2W, Single Output
    Focus
    (4 products)
    • 2:1 Wide input range regulated converter
    • 2W in compact SMD package
    • -40°C to +85°C operating temperature @ full load
    • High 3kVDC/1 second (1kVAC/1 minute)
    218 RECOM | RVP001 Series | IC, SMD (pinless)
    Focus New
    (2 products)
    • Full Bridge Topology
    • Highly Integrated, Simple Solution
    • Built-in 0.13Ω NMOS
    • Built-in 0.25Ω PMOS
    219 RECOM | RVP003 Series | IC
    Focus New
    (4 products)
    • Full Bridge Topology
    • Highly Integrated, Minimal External Components Required
    • Integrated 30V / 0.25Ω N-channel MOSFETs
    • Integrated 30V / 0.60Ω P-channel MOSFETs
    220 RECOM | RVP005 Series | IC, SMD
    Focus New
    (2 products)
    • Full Bridge Topology
    • Open Loop LLC Drive Mode Available
    • Highly Integrated, Simple Solution
    • Built-in 30V/0.25Ω NMOS
    221 RECOM | RVP010 Series | IC, SMD
    Focus New
    (2 products)
    • Push-pull Topology
    • Highly Integration with Simple Peripheral Circuitry
    • Built-in 24V/0.1Ω LDMOS
    • 1.7A Current limit
    222 RECOM | RVP6501 Series | IC, SMD
    Focus New
    (2 products)
    • Push-pull Topology
    • Highly Integration Compatible with Simple Peripheries
    • Built-in 24V/0.3Ω LDMOS
    • 0.8A Current-limit
    223 RECOM | RVPW011 Series | IC, SMD (pinless)
    Focus New
    (2 products)
    • 5V~50V Ultra-wide Range of Input Voltage
    • Suitable for Primary Side Feedback Flyback Converter
    • Minimum Sampling Time as Low as 0.4uS
    • Boundary Conduction Mode at the Heavy Load
    224 RECOM | RVPW012 Series | IC, SMD (pinless)
    Focus New
    (2 products)
    • 4V~80V Ultra-wide Range of Input Voltage
    • PSR Feedback Minimum Sampling Time as low as 0.4μS
    • Turn on in Boundary Conduction Mode (BCM) at the Heavy Load
    • Integrated 132V/0.2Ω LDMOS
    225 RECOM | RVPW014 Series | IC, SMD
    Focus New
    (2 products)
    • Suitable for PSR and SSR flyback/Boost/Buck
    • PSR Feedback Minimum Sampling Time as Low as 0.4us
    • CCM and DCM Modes are Compatible
    • Integrated 90V/0.1Ω LDMOS
    226 RECOM | RVPW015 Series | IC, SMD
    Focus New
    (2 products)
    • Suitable for PSR and SSR flyback/Boost/Buck
    • PSR Feedback Minimum Sampling Time as Low as 0.4us
    • CCM and DCM Modes are Compatible
    • Integrated 132V/0.6Ω LDMOS
    227 RECOM | RVPW016 Series | IC, SMD
    Focus New
    (2 products)
    • 4V to 100V Wide Input Range
    • Suitable for Flyback/Buck/Boost and other Topologies
    • Current Limit Threshold Voltage is 156mV
    • Single Resistor Programmable Oscillator
    228 RECOM | RVS002 Series | IC, SMD (pinless)
    Focus New
    (2 products)
    • Bridge Rectifier Structure
    • Highly Integrated, Simple Periphery
    • Built-in Two Schottky Diodes
    • Built-in Two nLDMOS Transistors
    229 RECOM | RVSW013 Series | IC, SMD (pinless)
    Focus New
    (2 products)
    • Can be Used for PWM Control and Synchronous Rectification
    • Synchronous Rectification Supports Both CCM and DCM Modes
    • Constant Current Compensation Function under Voltage Limiting Protection Achieves Constant Current Discharge
    • SSR Feedback can Enter CCM Mode Under Heavy Load
    230 RECOM | RVSY018 Series | IC, SMD
    Focus New
    (2 products)
    • Relative Maximum Voltage Detection Ensures Effective Turn-on Performance
    • Programmable Intelligent Voltage-limited Conduction to Adapt to SR MOSFET
    • Supports DCM and CCM Operations
    • Ultra-fast Turn-off Delay: 10ns/Turn-on Delay: 30ns
    231 RECOM | RYK Series | DC/DC, THT, 1W, Single Output
    Focus
    (2 products)
    • Low cost
    • 1:1 Input voltage range
    • Efficiency up to 81%
    • 4kVDC/1 second isolation
    232 RECOM | RxxC05TExxS Series | DC/DC, SMD, 0.5W, Single Output
    Focus
    (2 products)
    • Compact 10.35 x 7.5mm SMD package
    • Low profile (2.5mm)
    • 3kVDC/1min isolation
    • Low EMI emissions
    233 RECOM | RxxC1TFxxS Series | DC/DC, SMD (pinless), 1W, Single Output
    Focus
    (2 products)
    • Ultra-compact 5x4mm SMD package
    • Low profile (1.18mm)
    • 3kVAC/1s isolation
    • 3.3 or 5V selectable outputs
    234 RECOM | RxxCTExxS Series | DC/DC, SMD, 1W, Single Output
    Focus
    (2 products)
    • Compact 10.35 x 7.5mm SMD package
    • Low profile (2.5mm)
    • 3kVDC/1min isolation
    • Low EMI emissions
    235 RECOM | RxxCTxxS Series | DC/DC, SMD, 0.5W, Single Output
    Focus
    (2 products)
    • Compact 10.3x7.5mm SMD package
    • 5kVAC reinforced isolation
    • 5V or 3.3V post-regulated, selectable outputs
    • Low EMI emissions
    236 RECOM | RxxPxx/R Series | DC/DC, THT, 1W
    Focus
    (300 products)
    • UL/CSA and IEC/EN safety certified
    • EN61010 for test, measurement and lab use
    • EN60601 for medical applications
    • Reinforced isolation 6.4kVDC or 8kVDC
    237 RECOM | RACM3000-M Series | AC/DC, Connector/Screw Terminal, 3000W, Single Output
    Coming Soon
    (3 products)
    • 3000W DC-out @ In: 180-264VAC or 400-800VDC
    • UL62368 & UL60601; IEC60335 (-2-29)
    • 5V/2A standby output
    • Active current sharing support; (optional OR-ing FET)
    238 RECOM | RMOD2000-EW Series | DC/DC, Connector, Single Output
    Coming Soon
    (2 products)
    • High voltage DC/DC converter for E-Mobility
    • Covering input voltage range 180-950VDC
    • IP67, IP69, IP69K protection acc. to ISO 20653
    • EN62477-1, ISO 6469-3, ECE-R10/100
    239 RECOM | RP100-FW Series | DC/DC, THT, 100W, Single Output
    Coming Soon
    (56 products)
    • 4:1 wide input voltage range
    • 2.25kVDC isolation
    • Efficiency up to 94%
    • Wide operating temperature range -40°C to +110°C
    240 RECOM | RP50-AW Series | DC/DC, THT, 50W
    Coming Soon
    (56 products)
    • 4:1 wide input voltage range
    • 2.25kVDC isolation
    • Efficiency up to 93%
    • Wide operating temperature range -40°C to +110°C
    241
    New
    (1 product)
    • Isolation voltage 1.5kVDC/min
    • Operating temperature: -40°C to +85°C
    • Short circuit protection
    • Castellated connections
    242
    New
    (1 product)
    • Isolation voltage 3kVDC/min
    • Operating temperature: -40°C to +85°C
    • Short circuit protection
    • Castellated connections
    243
    New
    (1 product)
    • Isolation voltage 4.5kVAC/min
    • Operating temperature: -40°C to +85°C
    • Short circuit protection
    • Castellated connections
    244
    New
    (1 product)
    • Isolation voltage 5kVAC/min
    • Operating temperature: -40°C to +85°C
    • Short circuit protection
    • Castellated connections
    245
    New
    (1 product)
    • Isolation voltage 3kVDC/min
    • Operating temperature: -40°C to +85°C
    • Short circuit protection
    • Castellated connections
    246
    New
    (1 product)
    • Isolation voltage 3kVDC/min
    • Operating temperature: -40°C to +85°C
    • Short circuit protection
    • Castellated connections
    247
    New
    (1 product)
    • Isolation voltage 3kVDC/min
    • Operating temperature: -40°C to +85°C
    • Short circuit protection
    • Castellated connections
    248
    New
    (1 product)
    • Isolation voltage 3kVDC/min
    • Operating temperature: -40°C to +85°C
    • Short circuit protection
    • Castellated connections
    249
    New
    (1 product)
    • Isolation voltage 1.5kVDC/min
    • Operating temperature: -40°C to +85°C
    • Short circuit protection
    • Castellated connections
    250
    New
    (1 product)
    • Isolation voltage 3kVDC/min
    • Operating temperature: -40°C to +85°C
    • Short circuit protection
    • Castellated connections
    Series Type 説明
    IA6000
    IA6000
    New
    Inverters 6kW 3AC inverter for traction line input 750V
    IA750
    IA750
    New
    Inverter 750W DC/1AC Inverter for Railway Applications
    IAC1300
    IAC1300
    New
    Inverter 1300W DC/3AC Inverter for Railway Applications
    IAC1500
    IAC1500
    New
    Inverter 1500W DC/1AC Inverter for Railway Applications
    IAC260
    IAC260
    New
    Inverter 220W DC/1AC Inverter for Railway Applications in IP65
    IAC3000
    IAC3000
    New
    Inverter 3000W DC/3AC Inverter for Railway Applications
    ID250
    ID250
    Railway Inverter Power 240W, Vin 24-48-72-110VDC, Vout 48VDC: 50-156VAC / 24-72-110VDC: 200-240VAC
    ID3300
    New
    Inverter 3000W DC/3AC Inverter for Railway Applications
    IPS
    IPS
    Power 350/700/1400/2100W, Input Voltage Range 24Vdc (20-30VDC) / 48VDC (40-57VDC) / 110VDC (88-140VDC)
    IPS1200
    IPS1200
    Marine Inverter Power 1200VAC, Vin 48VDC±10%, Vout 3x 115VAC/400Hz (3AC)
    M141-1U-PFC
    M141-1U-PFC
    Power 140W, Input Voltage Range 90÷264VAC, Vout 3.3/5/12/-5/-12V
    MA11000
    MA11000
    Bidirectional Battery balancer Power 11kW, Input Voltage Range 180-480V3AC, Output Voltage Discharge 4-300VDC
    MA2000
    MA2000
    Bidirectional Battery balancer Power 1.4-2kW, Input Voltage Range 90-264VAC / 3-120VDC, Output Voltage Discharge 2-120VDC
    MA512
    MA512
    New
    1AC/DC Medical Power supply with multiple Output
    MAB1256
    MAB1256
    New
    UPS Bidirectional Power Supplies 1AC/DC Online UPS unit with multiple Output
    MD106-RX-1-24V
    MD106-RX-1-24V
    Power 106W (Nom.), Input Voltage Range 16÷36VDC, Vout 24V
    MD106-RX-1-24V-S
    MD106-RX-1-24V-S
    Power 106W (Nom.), Input Voltage Range 16÷36VDC, Vout 24V
    MD143-RX-1-24V
    MD143-RX-1-24V
    Power 122W (Nom.), Input Voltage Range 16÷36VDC, Vout 5.1/12.06V
    MD156-RX-3-24V-WTR-V2
    MD156-RX-3-24V-WTR-V2
    Power 144W, Input Voltage Range 16÷36VDC, Vout 24V
    MD200
    MD200
    MIL-Std PSU Power 220W, Vin 28VDC, Vout 5V / 2 x 12V
    MD56-I-R-X-AT
    MD56-I-R-X-AT
    Power 43.5W, Input Voltage Range 44÷138VDC, Vout 5.1/18V
    MD56-I-R-X-BT
    MD56-I-R-X-BT
    Power 43.5W, Input Voltage Range 16.8÷46.9VDC, Vout 5.1/18V
    MD96-I-R-X-AT
    MD96-I-R-X-AT
    Power 80W, Input Voltage Range 44÷138VDC, Vout 5.1/18/24V
    MD96-I-R-X-BT
    MD96-I-R-X-BT
    Power 80W, Input Voltage Range 16.8÷46.9VDC, Vout 5.1/18/24V
    PFC1600
    PFC1600
    PFC Front-end unit Power 1600W, Vin 2301AC, Vout 360VDC
    PFC3200
    PFC3200
    PFC Front-end unit Power 3200W, Vin 230V1AC, Vout 365VDC
    PFC4000
    PFC4000
    PFC Front-end unit Power 4000W, Vin 2301AC, Vout 360VDC
    PFC800
    PFC800
    PFC Front-end unit Power 800W, Vin 2301AC, Vout 365VDC
    RMOC3200
    RMOC3200
    Cascadable Battery charger Power 3200W, Vin 400V3AC or 700VDC, Vout 24-110V
    RMOC4000
    RMOC4000
    MIL-Std PSU Power 4kW, Vin 400V3AC or 700VDC, Vout 24V
    RMOC5000
    RMOC5000
    Cascadable Battery charger Output Power 5kW, Vin 360-440VAC 3 Phases 3 wires RST, Vout 39.5-58VDC
    RMOD400-HV
    RMOD400-HV
    Focus Coming Soon
    Vehicle High-Voltage DC/DC Power 400W, Vin 350-950V, Vout 12V, 28V or 48V
    RMOD700-HV
    RMOD700-HV
    Focus Coming Soon
    Vehicle High-Voltage DC/DC Power 700W, Vin 350-950V, Vout 12V, 28V or 48V
    S040
    S040
    Power 30÷48W, Input Voltage Range 90÷264VAC, Vout 5/12/15/24/48V
    S060
    S060
    Power 50÷72W, Input Voltage Range 115/230VAC ±15%, Vout 5/12/15/24/36/48/96V
    S070-R
    S070-R
    Power 60W, Input Voltage Range 115/230VAC ±15%, Vout 5/12/15/24/36/48/96V
    S1000-R-DC
    S1000-R-DC
    Power 100W at 65°C, Input Voltage Range 100÷360VDC, Vout 12/15/24/36/48/96V
    S1000-R-S1200-R
    S1000-R-S1200-R
    Power 1000/1200W typ. at 65°C, Input Voltage Range 90÷264VAC, Vout 12/15/24/48/96V
    S110
    S110
    Power 80÷96W, Input Voltage Range 115/230VAC ±15%, Vout 5/12/15/24/36/48/96V
    S120-R
    S120-R
    Power 125W, Input Voltage Range 115/230VAC ±15%, Vout 5/12/15/24/36/48/96V
    S1200
    S1200
    Power 1000÷1260W, Input Voltage Range 115/230VAC ±15%, Vout 5/12/15/24/36/48/96V
    S1500
    S1500
    Power 1440W, Input Voltage Range 115/230VAC ±15%, Vout 24/48/96V
    S1500-R
    S1500-R
    Power 1500W typ. at 60°C, Input Voltage Range 230VAC ±15%, Vout 15/24/48/96V
    S210-R
    S210-R
    Power 200÷250W, Input Voltage Range 115/230VAC ±15%, Vout 5/12/15/24/36/48/96V
    S400
    S400
    Power 384÷480W, Input Voltage Range 115/230VAC ±15%, Vout 5/12/15/24/36/48/96V
    S410-R
    S410-R
    Power 390W, Input Voltage Range 115/230VAC ±15%, Vout 12/15/24/36/48/96V
    S900
    S900
    Power 768÷960W, Input Voltage Range 115/230VAC ±15%, Vout 5/12/15/24/36/48/96V
    SA1000-CB
    SA1000-CB
    New
    1000W 1AC/DC Battery Charger for Industrial Applications
    SA10000
    SA10000
    New
    Battery charger 10kW AC/DC On-Boad Charger for E-Mobility
    SA1200
    SA1200
    New
    1kW / 3,8kW short term 1AC/DC Power Supply Unit for Industrial Applications
    SA3000-IPRG
    New
    3000W 1AC/DC Power Supply Unit for Industrial Applications
    SA3206
    SA3206
    New
    Battery Charger 3,2kW temperature regulated Battery Charging for Railway Applications
    SA3300-CB
    SA3300-CB
    New
    3kW AC/DC On-Boad Charger for E-Mobility
    SA4000
    SA4000
    New
    PFC Stage 4kW PFC Frond-End Unit
    SA4509
    New
    4,5kW Medical 1AC/DC with adjustable HV-Output
    SA500
    SA500
    New
    Battery charger 500W AC/DC or UPS PSU for Railway Applications
    SAB10000
    SAB10000
    Battery conditioner Power 10kW, Vin 340-470VAC / 520-700VDC, Vout 20VDC/24VDC
    SAB20K
    SAB20K
    New
    Bidirectional Battery balancer Bidirectional non-isolated HV-DC/DC
    SAB6000
    New
    Bidirectional Battery balancer 6kW bidirectional 3AC/DC for Cell Formation / Battery charging
    SD03-I-V4
    SD03-I-V4
    Power 3W, Input Voltage Range 11÷30VDC
    SD1200
    SD1200
    Railway Converter Power 900-1200W, Vin 24V-110V, Vout 24V-110V
    SD2000
    SD2000
    New
    Railway DC/DC Converter 2kW DC/DC Converter for Railway Applications
    SD280
    SD280
    New
    MIL-Std PSU Power 280W, Vin 28VDC, Vout Multiple output
    SD2800
    SD2800
    Step-Down-Rectifier Power 2.5-3.5kW, Vin 44V3AC or 16-110VDC, Vout 12-48V
    SD30000
    SD30000
    New
    Inverters 30kW DC/DC Power Supply Unit with HV-Output up to 920V
    SD4000
    SD4000
    Cascadable PSU Power 4kW, Vin 320/450/600VDC, Vout 24-110V
    SD4008
    SD4008
    New
    Battery charger 4kW DC/DC converter for Fuel Cell use and Battery Charging
    SD43-I-R-X
    SD43-I-R-X
    Power 30W, Input Voltage Range 50÷138 / 43÷154VDC, Vout 12V
    SD7008
    SD7008
    New
    Battery charger 7kW DC/DC converter for Fuel Cell use and Battery Charging
    SQ120-1F
    SQ120-1F
    Power 96÷120W, Input Voltage Range 90÷132 / 180÷264VAC, Output Voltage 12/24/48VDC
    SQ120-1F-24
    SQ120-1F-24
    Power 96÷120W, Input Voltage Range 21.6÷35VAC (30÷50VDC), Output Voltage 12/24VDC
    SQ120-3F
    SQ120-3F
    Power 96÷120W, Input Voltage Range 180÷264V 3AC, Output Voltage 12/24/48VDC
    SQ1200-1F
    SQ1200-1F
    Power 1200W, Input Voltage Range 94÷264VAC (90÷150VDC), Output Voltage 24/48/96VDC
    SQ1200-3F-240
    SQ1200-3F-240
    Power 1200W, Input Voltage Range 180÷264V 3AC, Output Voltage 24/48VDC
    SQ1200-3F-400-500
    SQ1200-3F-400-500
    Power 1200W, Input Voltage Range 340÷576V 3AC, Output Voltage 24/48VDC
    SQ136-3F-400-500
    SQ136-3F-400-500
    Power 120W, Input Voltage Range 340÷576 3AC (450÷810VDC), Output Voltage 24VDC
    SQ1500-1F
    SQ1500-1F
    Power 1500W, Input Voltage Range 187÷264VAC, Output Voltage 24/36/48VDC
    SQ1500-3F
    SQ1500-3F
    Power 1500W, Input Voltage Range 340÷576V 3AC, Output Voltage 24/48VDC
    SQ240-1F
    SQ240-1F
    Power 180÷240W, Input Voltage Range 90÷132 / 180÷264VAC, Output Voltage 12/24/48VDC
    SQ240-3F
    SQ240-3F
    Power 180÷240W, Input Voltage Range 180÷264 / 340÷576V 3AC, Output Voltage 12/24/48VDC
    SQ256-3F-400-500
    SQ256-3F-400-500
    Power 240W, Input Voltage Range 340÷576 3AC (450÷810VDC), Output Voltage 24VDC
    SQ480-1F
    SQ480-1F
    Power 360÷480W, Input Voltage Range 94÷264VAC, Output Voltage 12/24/48VDC
    SQ480-3F
    SQ480-3F
    Power 360÷480W, Input Voltage Range 180÷264 / 340÷576V 3AC, Output Voltage 12/24/48VDC
    SQ60-1F
    SQ60-1F
    Power 60W, Input Voltage Range 90÷264VAC, Output Voltage 12/24/48VDC
    SQ960-1F
    SQ960-1F
    Power 720÷960W, Input Voltage Range 94÷264VAC (90÷250VDC) / 105÷240VAC, Output Voltage 12/24/48/96VDC
    SQ960-3F
    SQ960-3F
    Power 720÷960W, Input Voltage Range 180÷264 / 340÷576V 3A , Output Voltage 12/24/48VDC
    SQ976-3F-400-500
    SQ976-3F-400-500
    Power 960W, Input Voltage Range 340÷576 3AC (480÷810VDC), Output Voltage 24VDC
    SQD
    SQD
    New
    72W AC/DC and DC/DC for Railway Signaling Applications, DIN rail
    3D Power Packaging
    AC/DC Power supplies
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    全てのAC/DCコンバータには、ヒューズデバイス(1つまたは複数のヒューズまたはヒューズ抵抗器)が内蔵されているため、通常は外部保護は必要ありません。ただし、一部の規格では、コンバータにつながるACケーブルまたは基板パターンのショートから保護するために、外部入力ヒューズが必要です。–STまたはRAC-ADAPTオプション(ネジ留め式端子入出力接続を持った電子基板)には、標準で外部入力ヒューズが付属しています。
    全てのAC/DCコンバーターには、入力電圧が低すぎて入力電流が高くなりすぎるのを防ぐためにコンバータを停止する低電圧ロックアウト(UVLO)機能が組み込まれています。 UVLOは通常、約80V ACに設定されます。
    AC/DCコンバータは、外部DC電圧が規定DC出力よりも低い限り、電源が投入されていない時に出力のDC電圧に耐えることができます。したがって、AC/DCアダプタからの出力は、OR-ingダイオードを介して代替DC電源に接続する必要があります。これは便利な機能で、例えば、安全な低電圧DCベンチ電源を使用してボードの電源を入れ、キャリブレーションまたはテストし、ユニットをケースに再組み立てした後、最終チェックのために主電源につなぐことができます。
    これら比率は入力電圧範囲を表します。たとえば、入力範囲が1:1の24V入力DC/DCコンバータは、24Vinput +/-10%(21.6V〜26.4V)で規定されます。入力範囲が2:1の24V入力DC/DCコンバーターは2対1の入力電圧範囲18V-36Vで規定され、入力範囲が4:1の24V入力DC/DCコンバータは4対1の入力電圧範囲9V-36Vで規定されます。
    DC/DCコンバータを使用する理由は多くありますが、最も一般的な用途は次の通りです。

    • 負荷を電源に一致させる(例:単一のソースからより高い、低い、またはデュアル出力を生成するため、または電源レールを反転するため)
    • 一次回路と二次回路を分離する(例:安全上の理由から、またはデリケートな回路を干渉から保護するため)
    • 電源を簡素化する(例:複数出力コンバーターまたはレールごとの1つのコンバーター(ポイントオブロード)は、電源の複雑さ、システム全体コスト、及び基板スペースを削減すると同時に、柔軟性、信頼性、およびシステム効率を向上させることができます)
    主な出力オプションは以下の通りです。

    Vout+およびVout-ピンを備えた単一出力 これは最も一般的に使用されるオプションです。
    Vout+、Com、Vout-ピンを備えたデュアル(バイポーラ)出力で、例えば +/-15V。単一の入力電圧レールからバイポーラ電源レールを生成する場合、例えばオペアンプに供給する場合に有効です。
    Vout +、ComおよびVout-ピンを備えたデュアル(非対称)出力、例: +18 /-9V。 非対称電源電圧を使用するIGBTゲートドライバーアプリケーションに有効です。
    Vout1+、Vout1-およびVout2+、Vout2-のデュアル(独立)出力。出力は、入力と互いの出力から絶縁されています。1つのコンバータのみを使用して2チャネルアプリケーションに便利です。
    メインVout+およびAux+、ComおよびAux-ピンを備えたトリプル出力。例: + 5Vおよび+/- 12V。単一の高電流電源および周辺機器に電力を供給する補助電源を必要とするアプリケーションに役立ちます。
    DC/DCコンバーターは逆極性保護されていません。間違った方法で接続すると、コンバータは回復不能な損傷を受けます。コンバータが逆極性で接続される可能性がある場合は、ダイオードを使用してコンバータを保護する必要があります(アプリケーションノートを参照下さい)。
    すべてのDC/DCコンバータは、しばしば発生する短時間の電圧低下に耐えることができますが、低電圧状態が繰り返されると、故障につながる可能性があります。一定の電力負荷の場合、入力電圧が低下すると入力電流は急速に増加します。 非調整DC/DCコンバータは、入力電流の増加がコンポーネント定格を超えない限り、より長い入力低電圧状態に耐えられます。出力電圧も非常に低くなります。未調整コンバータには、低電圧ロックアウト(UVLO)機能がありません。 調整済DC/DCコンバータには、入力の低電圧状態に対応しようとするため、よりストレスが掛かります。一部のシリーズは、低電圧ロックアウト(UVLO)機能を標準または/X1オプションとして備えています。これは入力電流が高すぎる場合にコンバータを停止する機能です。また、この機能は電源電圧が安定する前にコンバータが早すぎる起動を試みるのを防ぎます。
    全てのDC/DCコンバータは、しばし発生する短時間の過電圧過渡現象(<100ms)に耐えることができますが、過電圧状態が繰り返されると故障につながる可能性があります。 未調整のDC/DCコンバータは、供給電圧がコンポーネント定格を超えない限り、入力過電圧状態に長時間耐えることができます。出力電圧もかなり高くなります。 調整済DC / DCコンバータは、入力過電圧状態に対応しようとするためによりストレスが掛かりますが、REC3.5やREC6などの一部のコンバータは60秒間の入力過電圧状態に耐えることができます(制限事項についてはデータシートを参照して下さい)
    DC/DCコンバータには次の接続があります。

    電源ピン、Vin+およびVin –
    出力ピン、Vout+およびVout-(および+/-出力用の共通ピン)
    リモートコントロールのオン/オフ、イネーブルまたは制御ピン(通常は「CTRL」と表記される)
    トリムピン(出力電圧を上下に調整するため)
    センスピン(ケーブルまたはトラックの抵抗損失を補償するため)
    電源OKピン(出力電圧が安定していることを示す出力信号)
    絶縁型DC/DCコンバータは、DC入力電圧を内部トランスを介して、入力から電気的に絶縁された同じまたは異なるDC出力電圧に変換します。一般的には次の用途があります。

    1:グラウンドループの遮断。電源レールからの電気的干渉を、回路の他の部分へ悪影響を及ぼさないようにできます。例えば、モーターコントローラー回路で使用されるDC/DCは、ノイズの多いDC電源からでも低ノイズで安定した出力を供給できます。
    2:電力供給の基準ポイントを変更。例えば、-48Vテレコム電源から+5Vレールを生成する場合。
    3:安全のため。例えば、患者を電源の障害から保護するための医療アプリケーション。
    4:電源のセキュリティのため。複数のチャネルを使用するアプリケーションでは、各チャネルの電源を個別のDC/DCコンバータで分離することにより、チャネルに障害または回路ショートが発生しても、残りのチャネルは影響を受けません。
    非絶縁型またはスイッチングレギュレータコンバータは、DC入力電圧をより効率的に降下またはブーストし出力することができます。

    スイッチングレギュレータには、絶縁型DC / DCコンバータに比べて次の利点があります。

    1.トランスを使用せず、入力と出力がグラウンドを共有しているため、非常に高効率(> 97%)になる可能性があります。これらの低損失により、絶縁コンバータに比べて動作温度範囲が広くなり、電力密度が高くなります。
    2.スイッチングレギュレータは、負荷および入力電圧の変化を補償するために内部オン/オフデューティサイクルをより広い範囲で変更できるので、コンバータは拡張入力電圧範囲(7:1以上)と負荷範囲(100:1)で効率的に動作できます。
    3.スイッチングレギュレータは、サイクル毎のコントローラICを使用することが多いため、動的な負荷の変化や回路ショートに対する反応時間は非常に高速です。
    IoT 機器はバッテリー駆動時間を最大化するため、高効率・小型・低消費電力の DC/DC コンバータが適しています。
    産業用電源は信頼性、広い入力電圧範囲、各種保護機能、高効率を優先して設計する必要があります。また一般的な産業環境温度範囲である - 40℃~+85℃に対応する仕様とします。
    マイクロコントローラには低ノイズな DC/DC コンバータまたはリニアレギュレータを使用し、安定した電圧レールを供給します。マイコンの消費電流は処理負荷の変動に伴い大きく変化するため、負荷変動時に安定性を保つ高速な過渡応答特性が求められます。
    部品品質、放熱設計、保護機能の実装、適切な電気回路設計によって電源の信頼性が左右されます。
    すべてのRECOM製品はRoHS2+に準拠しています。 弊社ホームページで証明書と適合宣言をご確認下さい。
    UL/IEC/EN-60601-1認証(第3版)を取得した多くの医療グレードコンバーター、及びリスク評価の文書を提供可能です。
    完全に独立した第三者認証機関であるUL/IEC/EN認証(「単に満たすように設計された」だけではない)を取得した総合的な認証ポートフォリオを持っていることはRECOMの誇りです。認証は、コンバータの使用領域・環境に応じて、産業、医療、LED照明、家庭用、鉄道、および自動車の規格をカバーします。
    The UKCA (UK Conformity Assessed) marking is a new UK product marking that is used for products being placed on the market in Great Britain (England, Wales and Scotland). It applies to the same products that are currently CE marked. The circumstances in which self-declaration of conformity for UKCA marking can be used are the same as for CE marking. Based on current UK rules, RECOM is eligible to self-declare for the UKCA Declaration of Conformity (DoC) as long as the EU and UK regulations remain aligned.
    RECOM will make available a separate UKCA Declaration of Conformity (DoC) based on the existing CE Declaration of Conformity (DoC) and test reports (self-declaration). CE marking remains valid for goods placed on the market in Great Britain until 1 January 2023. The UKCA marking must be used for placing goods on the market in Great Britain after this date. RECOM will continue to actively monitor any changes to the UKCA rules based on UK government guidance and react accordingly.
    We will also instigate a program to successively add the UKCA mark to our CE marked products to fulfil our obligations as manufacturer. For further information or enquiries regarding our UKCA policy, contact TechSupport
    一部のDC/DCコンバーターにはクラスAまたはクラスBのEMCフィルターが組み込まれていますが、低価格のDC/DCコンバーターの多くには単純な入力フィルターのみが組み込まれています。お客様は、EMCフィルターを個別に追加するか、またはコストダウンのため全てのコンバータに追加するかを決定できます。外部EMIフィルタの提案については、クラスAとクラスBの両方についてアプリケーションノートに記載されています。 全ての弊社AC/DCコンバーターには、標準でクラスB EMCフィルターが組み込まれています。
    超音波洗浄はデリケートな電子部品にダメージを与える可能性があるため推奨しておりません。 ただし一部のRECOM製品はダメージ無く洗浄可能ですので、超音波洗浄が必要な場合はRecomテクニカルサポートにお問い合わせください。
    コンフォーマルコーティング前に電子基板を洗浄および乾燥するための推奨プロセスについては、コンフォーマルコーティングサプライヤの指示に従って下さい。 弊社は、製品のコンフォーマルコーティングに関する化学的不適合性またはその他の問題について苦情を受けたことはありません。
    強力な反応性または研磨性のクリーナーは、全ての電子デバイスと同様にカプセル化されたパッケージとピンを腐食させる可能性があるため、電子部品洗浄に適した不活性溶液(アルコールや水ベースの溶剤など)を用い洗浄液メーカの推奨温度で洗浄することをお勧めします。 ジェット洗浄または超音波洗浄は推奨しておりません。
    データシートで規定されている標準製品に加えて、RECOMは貴社の要求仕様に合わせたカスタムAC/DCおよびDC/DCコンバーターを提供可能です。
    通常、標準品の修正と、フルカスタムの2つの選択があります。
    標準品の修正においては、規格外の出力電圧や特別に長いピンなどの要求を「微調節」しアプリケーションにマッチするよう迅速に設計します。プロトタイプサンプルは、多くの場合最小限のコスト及び短いリードタイムで作成可能です。
    フルカスタムとは、例えば仕様やパッケージ形状が標準品と異なったり追加の出力がある新設計のカスタム製品です。
    通常、NRE(返金不可な開発費)料金と最小注文数量(MOQ)が必要になります。 詳細については、Recomテクニカルサポートにお問い合わせ下さい。
    DC/DC コントローラ IC は MOSFET、インダクタ、トランスといった外部パワー部品のスイッチング動作を制御する IC を指します。
    DC/DC コンバータ IC はスイッチング方式と内蔵制御回路により、直流電圧を別の電圧レベルに変換する素子です。
    Push-Pull(プッシュプル)およびFull Bridge(フルブリッジ)トポロジーは、多くの場合、非安定化方式であるため、入力電圧が安定化された電源ラインでの使用に適しています。プッシュプルトポロジーは、入力電流が複数のスイッチングトランジスタ間で分担されるため、3.3Vおよび5Vの入力電圧レールに適しています。これにより、小型のICパッケージでもより大きな電力を取り出すことが可能になります。一方、フルブリッジトポロジーは、入力電圧による負荷が複数のスイッチングトランジスタに分散されるため、5Vから24Vまでの入力電圧レールに適しています。これにより、より高い入力電圧でも効率的なスイッチング動作を実現できます。出力電圧の安定化が必要な場合や、より広い入力電圧範囲への対応、高出力アプリケーションでは、Flyback(フライバック)トポロジーが最適な選択肢となります。フライバック方式は汎用性が高く、ガルバニック絶縁(電気的絶縁)を容易に実現できるため、さまざまな用途に柔軟に対応できます。
    コンバータ IC はパワースイッチを内部に集積しており、よりコンパクトな設計が可能です。一方コントローラ IC は外部に実装したパワー部品のスイッチ動作を制御する仕様となっています。
    同期型コンバータは従来の整流ダイオードを MOSFET に置き換えた構造で、導通損失を低減し大幅に効率を向上させます。
    昇圧コンバータはインダクタ、ローサイドスイッチ、整流素子、出力フィルタにより、入力電圧をより高い出力電圧に昇圧します。
    入力電圧が目標出力電圧を上下に変動する場合に使用します。例として、充放電時に電圧が変動する 12V バッテリから安定した 12V 出力を維持したいケースに最適です。
    昇降圧コンバータは 1 つまたは複数のインダクタ、ハイ / ローサイドスイッチ、整流素子、出力フィルタを搭載し、入力電圧に対し出力電圧を昇圧・降圧両方に制御可能なトポロジです。
    選定時の重要パラメータは入力電圧範囲、出力電圧、最大負荷電流、スイッチング周波数、効率、実装サイズ、放熱性能です。これらの要素を用途の要求仕様に合わせて調整し、IC が電気的・熱的安全動作範囲内で動作し、基板実装面積を最小限に抑えるよう選定します。
    降圧コンバータは高周波のハイサイドまたはローサイドスイッチ、インダクタ、整流素子、出力フィルタを利用し、入力電圧をより低い出力電圧に変換します。
    非同期型コンバータは整流素子としてダイオードを使用するため回路構成が簡素ですが、同期型と比較して一般的に効率が低下します。
    代表的な部品はスイッチ内蔵 / 非内蔵のコントローラ IC、インダクタまたはトランス、整流素子、コンデンサです。出力電圧を安定化させる場合は帰還回路も追加で実装する必要があります。
    ディスクリート電源設計はコントローラ、スイッチングトランジスタ、トランス、インダクタ、コンデンサといった個別部品を組み合わせてコンバータを構築する手法です。設計者が各部品を個別に選定し、放熱性能、高電力密度、低コストなどの目標性能に最適化できるため自由度が非常に高い特徴があります。
    低損失部品の選定、スイッチング周波数の最適化、同期整流の導入により効率を向上できます。
    高度な設計自由度、独自の基板レイアウト、性能の最適化、大量生産時のコストメリットが求められる場合にディスクリート設計を選択します。
    降圧、昇圧、昇降圧、フライバック、フォワード、ハーフブリッジ、フルブリッジコンバータが一般的です。
    過電流保護、過電圧 / 低電圧保護、過熱シャットダウン、短絡保護が標準的な保護機能として実装されます。
    ゲートドライバ IC は MOSFET、SiC、GaN、IGBT といったパワートランジスタのゲートを駆動する素子で、高速スイッチングに必要なゲート電圧・電流を供給します。低電力な制御信号と大電力トランジスタのゲート間を繋ぐ緩衝回路として動作し、スイッチの状態遷移を効率化するとともに、制御 IC を高圧過渡電圧から保護します。
    ブートストラップ回路は、電源電圧を上回る電圧を生成し、ハイサイドスイッチの駆動に使用する機構です。
    十分な駆動能力を持つゲートドライバは、オン・オフ状態間の遷移を高速かつ制御された状態で実行し、スイッチング損失を低減します。ゲート電圧を最適な正・負電圧まで駆動することで、スイッチングトランジスタの本来の電力性能を最大限引き出すことが可能です。
    デッドタイムはスイッチ切り替えの間に挿入する短い遅延時間です。ブリッジ構成の上下トランジスタが同時に導通する貫通電流を防止したり、プッシュプル構成のコアエネルギーを完全に放出させたりする目的で設けます。
    ゲート電荷はトランジスタをターンオン・ターンオフするのに必要な電荷量を指し、ゲートドライバに必要な駆動電流を決定するパラメータです。スイッチング速度を左右するため、設計上非常に重要な指標となります。
    ハーフブリッジ構成の 2 つのスイッチ素子を制御し、出力を能動的にプルアップ・プルダウンするドライバ IC です。
    トランジスタのゲートにはスイッチ閾値電圧と大きな寄生容量が存在するため、高速かつ効率的にスイッチングするには十分な駆動電流が必要です。完全なターンオンを実現するため、ゲート駆動電圧は閾値電圧(数 V 程度)より大幅に高い + 15~+20V まで昇圧する場合があります。また確実なターンオフ特性を確保するため、-3~-9V の負電圧を印加するケースもあります。
    リモートのオン/オフまたは制御ピンは、一般的に次の用途で使用されます。
    低電力信号を使用して高電力コンバータを制御します。制御ピンの入力電力は通常数ミリワットですが、100ワットものコンバータを有効または無効にすることができます。これは、マイクロコントローラまたはロジックICの低電力出力を使用して、追加のアンプや大型のリレーを使わずにシステムを制御できることを意味します。
    正しい順序で複数のコンバータを持ったシステムをパワーアップまたはパワーダウンします。多くの複雑な電源は、安全のために特定の順序で起動またはシャットダウンする必要があります。
    例としては、周辺機器の電源を入れる前にマイクロプロセッサを起動して実行するコンピューターベースの制御機器があります。別の例として、ある電源が別の電源に給電する際、多くの場合、一次電源は、二次電源がオンになる前に安定した出力電圧に達しなければなりません。
    エネルギーを節約します。 制御ピンを使用すると、スタンバイモード中に中央のウォッチドッグ回路がアクティブなまま、回路の一部の電源を完全にオフにすることができます。全てのDC/DCコンバーターは無負荷時にも電力を消費するため、これはバッテリー駆動回路にとって特に重要です。
    突入電流を減らします。いくつかの並列サブシステムを持つシステムにおいては、主電源を過負荷にしたり、スイッチオン時にメインヒューズが切れないように、各サブシステムの起動をずらしておくことが有効です。
    突入電流は、コンバータ、負荷(特に容量性負荷)、および一次電源のインピーダンスに依存します。したがって、突入電流制限インダクタの推奨値はありません。これはアプリケーションごとに個別に算出する必要があるためです。とはいえ、通常は22µH〜100µHを出発点とすれば良いでしょう。
    CMCは、高電流でコアが飽和状態にならないため(+ ve突入電流は-ve突入電流によってバランスが取れます)、優れた突入電流リミッターです。したがって、EMCフィルターと突入制限という2つの目的があります。ただし、高電力コンバータの場合は、チョークの抵抗により通常の操作中に多くの電力が失われる可能性があるため、最良のEMCフィルタリングのために選択された高インダクタンスのチョークよりも、突入を低減するために選択された低インダクタンス、高電流のチョークを使用する方が良い場合があります。
    未調整コンバータには負荷に応じた偏差曲線があります。負荷が低いほど、出力電圧は高くなります。データシート内の偏差/負荷に関するグラフをご確認下さい。 通常、未調整コンバータには少なくとも20%の負荷が必要です。
    RECOM製品は全ての生産バッチにおいて出荷前にバーンインテストされています。
    RECOMは、市場で最も多くの非絶縁型DC/DCコンバータを供給しています。弊社ウェブサイトの検索エンジンでは、非絶縁型コンバータのみを検索できます。
    逆極性保護は組み込まれていませんので、外部に追加する必要があります。高電力コンバータには外付けMOSFETを追加するか、低電力でクリティカルではないアプリケーションには単純なブロッキングダイオードを追加することをお勧めします。
    デュアル15V出力コンバータ(+/- 15V)の共通ピンを使用せず、+Voutピンと–Voutピンのみを使用することで可能となります。デュアル出力コンバータは、+ve出力レールと–ve出力レール間出力のみを調整するので、コンバータが正常に機能するために共通ピンは不要です。これは、+/-5V = 10V、+/-9V = 18V、+/-12V = 24V、および+/- 15V = 30Vのように全てのデュアル出力コンバータに当てはまります。絶縁が不要な場合は、–ve出力ピンを+ ve入力ピンに接続して、電源電圧を上げることができます。例えば、絶縁24Vin、24V out DC/DCコンバータに給電する24V電源は、電源からの24V@1A(24W)+コンバータからの24V @ 1A(24W)=48V @ 1A(48W)を生成します。
    コンバータごとに、オン/オフ制御電圧が異なります。コンバータを損傷する可能性があるため、オン/オフピンをグラウンドまたは+Vinに接続する前にデータシートを慎重に確認して下さい。 一部のオン/オフピンは、TTLレベル信号で駆動される場合、追加の外部コンポーネントを必要とする場合があります。
    特殊なプロセスを使用して気泡(ボイド)を除去するため、コンバータは真空ポッティングされていません。
    エポキシポッティングプロセスは次の通りです。
    1- 2成分のエポキシを混合し、真空中に1分間置いて、混合プロセスで生じた気泡を除去します。
    2-プラスチックケースにエポキシを1/3充填します。
    3-テスト済のコンバーター基板をプラスチックケースに挿入し、エポキシを2/3充填します。
    4-完成したコンバーターを20分間ホットオーブン(30°C)に入れて、気泡が上部に上がるようにします。
    5-ケースはより硬いエポキシで密封され、50°Cで1時間ベーキングし硬化します。
    6-さらに、X線装置でスポットチェックが行われ、コンバータにエアボイドが存在しないことを確認します。
    シリコーンゴムのポッティングプロセスは次の通りです。
    1-事前に混合されたシリコンゴムコンパウンドがケースに注入されます。
    2-ケースをシェーカーに置き、振動させて気泡が表面に浮き上がるようにします。
    3-ケースは充填レベルまで補充されます。
    4-コンバーターをそのまま室温で硬化させます。
    はい、ディレーティングされている場合(フルパワーで使用されていない場合)は温度範囲外でも動作します。ただし、よりシンプルな低コストのコンバータには過熱保護機能がありませんので、長期間にわたって温度仕様外で使用すると故障する可能性があります。一方、弊社の高出力DC/DCおよびAC/DCコンバータには過熱保護機能が組み込まれています。これらコンバータは過熱するとシャットダウンします。
    一部のファミリでは10%未満の負荷で規格外になる場合がありますが、全てのRECOM製品は無負荷で使用しても問題ありません。
    RECOMのDC/DCコンバータにはこの機能がありません。複数のコンバータの発振器を同期させることは、メイン周波数での干渉が増加するという犠牲を払ってビート周波数を回避する便利な手法ですが、通常、メイン周波数に強力な干渉を及ぼさずに各コンバータを個別にフィルタリングすることにより、効果的な結果を得ることができます。
    DC/DCコンバータのセンスピン(Sense +およびSense-)は、出力ピンで直接測定されるのではなく、負荷に供給される出力電圧を調整するために使用されます。コンバータは、高電流を供給する4つの接続(Vout +とVout-、およびフィードバック用の2つの低電流接続、Sense +とSense-)を使用します。接続で起こった電圧降下を補償するために出力電圧を単純にトリミングするのと比較して、センスピンを使用する利点は、センスピンが低負荷電流と高負荷電流の両方で負荷電圧を調整するため、軽負荷時の高すぎる負荷電圧を回避できることです。一部の負荷共有コントローラでは、センスピンを使用して、2つ以上のDC/DCコンバータを並列に接続して電力を増やすこともできます。
    特定の周囲温度においては、内部の熱放散によりコンバータが100%の電力を供給できなくなり、温度が高くなるにつれ負荷を軽減(減少)する必要があります。ディレーティング曲線は、動作温度範囲全域にわたってコンバータが供給できる最大電力を示します 。一部のAC/DCコンバーターには低温ディレーティングがあります。これは、非常に低い温度で動作効率が低下し損失が増加することです。
    未調整のバイポーラコンバータの中には、すべてまたは一部の負荷を1本の出力ピンから取り出すことができる電力共有機能があります。
    調整済デュアル出力コンバーターは、Vout +とVout-の差を調整し、共通ピンをフロートさせます。したがって、+/-15Vに非対称的に、例えば+80%、-20%の負荷がかかった場合、出力電圧の差は30Vのままですが、出力電圧が+ 13、-17Vになるように共通ピンがドリフトします。不平衡負荷で平衡出力が必要な場合は、事後調整を使用して出力を安定させます。
    RECOMは詳細なデータシートを持っていることに誇りを持っていますが、掲載されていないパラメータまたは動作特性があるかもしれません。 オーストリア、ドイツ、アメリカ、シンガポール、日本、中国の弊社オフィスから現地のテクニカルサポートにお問い合わせ下さい。または、最寄りのRECOMコンタクト先あるいは代理店に連絡し詳細をお問い合わせ下さい。
    トリムピンがある場合、これを使用して特定の範囲(通常は+/- 10%または-20%、+ 10%)で安定化出力電圧を増減できます。一部のスイッチングレギュレータには、より広い範囲(最大+/- 50%)で出力電圧を調整できるVadjピンがあります。
    トリム(またはVadj)とVout +ピンの間に抵抗を接続すると出力電圧が低下、トリム(またはVadj)とVoutまたはGndピンの間に抵抗を接続すると出力電圧が増加します。
    通常、トリミングは、出力電圧を上げることで長いケーブルまたはPCBトラック起因の電圧降下を補償するのに役立ち、また最悪の条件下で負荷の過電圧ストレス回避のために出力電圧を下げる用途に使用されます。
    電圧トリムは、さまざまなバッテリの化学的性質を一致させるのにも役立ちます。 12V鉛酸蓄電池は、最大13.2V(+ 10%)にトリムアップされた12Vコンバーターを使用してトリクル充電が可能ですし、LiPoバッテリーは4.6V(-8%)にトリムダウンされた5Vコンバーターから安全に充電できます。
    コンバータには、通常70°C〜85°Cで始まるディレーティング曲線があり、その温度ポイント以降は、内部熱放散を制限するために負荷を減らす必要があります。ヒートシンクを使用してこの温度ポイントを数度上げることができますが、アプリケーションに適切な冷却システムがない場合は、大きなヒートシンクでも効果がない場合があります。プラスチックパッケージに封入されたコンバーターは、ヒートシンクで冷却効果を得ることができません。 代わりに、より高電力なコンバータを使用してディレーティングを増やして下さい。
    R-78AAシリーズのような一部のRECOMコンバータには、2レベルの制御ピン機能があります。制御ピンの電圧が2.6Vを下回ると、主電力段はオフになりますが、内部発振器と電圧レギュレータは動作し続けます。これにより、スタンバイからフルパワーまで非常に迅速な再起動が可能になります。超低電力モードの場合、制御ピンの電圧は1.6V未満でなければなりません。その後メイン発振器もオフになり、コンバータの消費電流はわずか20µAになります。ディープスリープからの起動は、スタンバイからの起動よりも遅くなります。
    コンバータのシリーズにより、ニッケルメッキ銅、または航空機グレードのアルミニウムが使われています。
    ポストレギュレーションを使用する低電力コンバータは、最小入力電圧で、リニアレギュレータが適切に調整できる十分な出力電圧ヘッドルームがあるように設計する必要があります。これは、規格入力電圧ではリニアレギュレータで大きな電圧低下が発生し、その結果コンバータによって消費される静止電流が増加するからです。

    高電力コンバータは、出力で同期整流を使用することがよくあります。スイッチングトランジスタは、無負荷状態でもフルパワーで動作するため、静止電流が大きくなる可能性があります。
    絶縁型DC/DCコンバーターには、入力と出力の間に電気的接続がありません。したがって、Vin+が正の電源に接続されVin-がグラウンドに接続されているか、Vin+がグラウンドに接続されVin-が負の電源に接続されているかは関係ありません。これは、例えば標準の-48V電源を使用して+5Vを出力する通信業界のシステムで役立ちます(Vin+ =グラウンド、Vin- = -48V、Vout + = 5V、Vout- =グラウンド)。
    これは非絶縁型スイッチングレギュレータには適用されませんが、R-78シリーズは正の入力電圧から負の出力電圧を生成するように設定できます(アプリケーションノートを参照下さい)。
    通常の機能においては、データシートで特に規定されていない限り、通常の動作に外部コンデンサは必要ありません。EMIフィルタリングについては、アプリケーションノートの推奨事項を参照して下さい。
    アイドル状態(ロードされていない)のコンバーターが消費する電流です。 すべてのコンバータには、電力が供給されていない場合でも電力を消費する発振器が入っています。
    理論的には可能ですが、実際には非常に非線形です。外部の電圧または電流を使用して出力電圧を調整することも、規制と回路ショートに影響する可能性があるため推奨しません。
    制御ピンへの最大許容電圧は、コンバータシリーズごとに異なります。ほとんどのDC/DCコンバーターは最大5V、一部は最大12V以上を許容しますが、詳細ガイダンスはデータシートを参照して下さい。データシートで明確に許可されていない限り、未使用の制御ピンを+ Vinに接続しないで下さい。
    制御ピンの電圧が上昇しているとき、スイッチングポイント(しきい値)は、電圧が下降しているときよりも高くなります。電圧上昇トリガーポイントと電圧下降トリガーポイントの違いはヒステリシスです。例えば、負の制御ロジックを持ったコンバータは、制御ピンの電圧が3Vを超えるとすぐにオンになりますが、起動後は電圧が1Vを下回ると再びオフになります。2Vの差はヒステリシスであり、ゆっくりと上昇または下降する制御電圧により、コンバータの不規則なオンオフ切り替えを防止します。
    未調整コンバータは安価なソリューションですが、出力電圧は負荷と入力電圧の変動によって変化する可能性があり、出力安定性は低くなります。したがって、入力電圧範囲は+/- 5%または+/- 10に制限されるので、安定した電源電圧でのみ未調整型DC/DCコンバータを使用することをお勧めします。出力電圧は無負荷状態で大幅に上昇する可能性がありますが、20%から100 %の負荷範囲では電圧変動はさほど大きくありません。

    調整済コンバータは、通常1%未満の非常に優れた負荷およびライン電圧レギュレーションを提供するため、出力電圧は負荷または入力電圧に依存しません。特に、出力電圧は低負荷または無負荷状態でも安定しています。さらに、入力電圧範囲が広いため(非絶縁コンバータでは2:1、4:1、または最大7:1)、調整済コンバータは、バッテリーや複数の供給電圧などの可変入力電圧電源での使用に適しています(例:12Vまたは24V電源)。
    負の制御ロジックは、ロジック0(ロー)がコンバーターを有効にし、ロジック1(ハイ)がコンバータを無効にすることを意味します。ピンを未接続のままにするとロジック0になり、電力が供給されるとすぐにコンバーターが起動します。
    正の制御ロジックとは、ロジック0(ロー)がコンバータを無効にし、ロジック1(ハイ)がコンバーターを有効にすることを意味します。ピンを未接続のままにするとロジック0になり、電力が供給されてもコンバーターは起動せずに正の信号を待ちます。 多くの安全重視システムにとって、これは重要な機能です。
    高電力コンバータは、全負荷で最高効率の動作をするように最適化されています。これは、例えば、完全オンと完全オフの間で電力が消費されないようにスイッチングトランジスタを非常に高速に切り替える必要があることを意味します。負荷がない場合でも、スイッチングドライバは最大出力で動作するため、コンバータは熱を帯びます。
    弊社のAC/DCコンバーターには通常、入力サージ保護が組み込まれていますが、一部のシリーズでは全ての動作条件を満たすために外部抑制MOVが必要です。弊社のDC/DCコンバーターにはサージ保護がありません、通常、入力ピンの近くに配置された電解コンデンサーで61000-4-5の要件を十分に満たします。
    弊社では多くの錫ウィスカ軽減対策を施しており、これらは全てJedec JP002ガイドラインに準拠しています。

    スルーホールデバイス:
    弊社の全てのスルーホールコンバータで使用されるピンは、硬質銀銅合金で作られています。ピンには0.5μm厚のニッケル下地めっきを施してから、厚さ6μmの純錫を電気めっきします。この厚さのオーバーメッキは、合理的な製造コストと、錫ウィスカの形成を防止するに十分な厚さのコーティングとの妥協点です。錫ウィスカの形成を軽減するために、表面は「研磨」されていません。最後に、ピンはJIS C3101に沿って焼きなましされます。これにより、錫ウィスカ形成の潜在的な原因の1つである残留形成応力が減少します。

    表面実装デバイス:
    弊社の表面実装タイプコンバータで使用されるキャリアフレームは、純錫めっきされたDF42Nニッケル合金で作られています。その後、ピンをSn-Ag-Cuはんだにホットディップして、錫ウィスカ形成を軽減します。
    電源としての12バッテリーの大きな問題は、非常に高い突入電流です。 通常、低電力のコンバーター(20W未満)では問題になりませんが、高電力のコンバータの場合、突入電流はコンバータまたは外部コンポーネントを破壊する可能性があります。バッテリーのもう一つの問題は、エンドユーザがバッテリーを間違った方向に接続すると、コンバータが即座に破壊されることです。 これらの問題を回避するには、外部ブロッキングダイオードまたはFETを取り付け、ソフトスタート回路または突入電流フィルターを追加することです。 推奨される回路とコンポーネントの値については、RECOMテクニカルサポートにお問い合わせ下さい。
    静止電流またはスタンバイ電流は、コンバータが無負荷時に引き込む電流です(コンバータはアクティブで、出力電圧はありますが、出力電流はありません)。シャットダウン電流は、コンバータが制御ピンにより停止している間に、コンバータが電源から引き込む残留電流です。制御ピン電流は、停止状態を維持するために、コンバータによって制御ピンを介して流れる電流です。
    巻線が物理的に分離されている(強化絶縁)ため、両シリーズでは標準の被覆ワイヤを使用しています。RP-xxxxシリーズの場合、一時巻線と二次巻線はチャンバーシステムによって分離されています。RxxP(2)xxシリーズは、トロイダル変圧器の両側の絶縁ブリッジによって一次および二次巻線が分離されている2チャンバーシステムを使用しています。
    絶縁とは、コンバータの入力と出力間の電気的分離(ガルバニック絶縁)のことで、絶縁されたコンバータの出力が入力から隔離され、電気的干渉、電圧差、障害電流がブロックされることを指します。これは、出力回路が「現実の」世界に繋がっており、出力回路に発生するものと主回路を分離する必要があるアプリケーションで非常に重要です。DC/DCコンバータは通常1秒間のDC絶縁が規定され、AC/DCコンバーターは通常1分間のAC絶縁が規定されます。
    入力、出力ともショートされた状態で絶縁テストが行われ、入力と出力の間にテスト電圧が印加されます。このように、入力と出力間のすべての経路に対して絶縁がテストされるため、値はローサイド入力、ハイサイド入力ともに等しくなります。
    データシートで規定されている絶縁電圧は、1秒間のフラッシュテストで得られたものです。絶縁バリアが長時間または無限に必要な場合、定格動作電圧を使用する必要があります。Recomは、1秒、60秒、または連続のDCとAC間の絶縁の等価性を確認できる変換ソフトウェアをウェブサイトで公開しています。弊社の製品を競合他社と比較する際に、同じタイプの絶縁で比較することは誤解を避けるために非常に重要です。
    コントローラーチップには多段式シャットダウンがあります。
    オン:オープンまたは0V 0.6V:最小静止電流-すべての回路がシャットダウン-最も遅い再起動応答時間
    オフ(スタンバイ):0.6V 2.9V:出力電力およびPWM発振器がオフ-中程度の再起動応答時間
    オフ(シャットダウン):2.9V 6V:出力電力オフ、他の全ての回路がアクティブ-最も速い再起動応答時間
    PWM制御ピンは、リモート制御ピンとしても使用できます。つまり、このピンからユニットのオン/オフを切り替えることができます。スイッチングレベルはTTLと互換性があり、低速スイッチング波形を可能にするヒステリシスがあります。
    PWM調光の10〜90%の範囲外での直線性は完全ではありませんが、それでもかなり良好です。アナログ調光は0〜100%の範囲で使用できます。
    アナログ電圧は、内部PWM回路の制御に使用されます。
    RCD-24シリーズは降圧型(バック)コンバータなので、常に必要な出力電圧よりも高い入力電圧が必要です。通常、高出力LEDの順電圧降下は約3.4Vなので、12Vの電源から直列駆動できるLEDは3つだけです。入力電圧を24Vに上げると7個のLED、36Vの場合、10個のLEDを駆動できます。
    ただし、LEDチェーンを並列接続することが可能であるため、RCD-24-7.0は、並列に接続された3つの350mA x 2つのLEDチェーンを駆動できます。
    この部品は定電流コンバータであるため、出力電圧は必要な電力に応じて可変ですが、常に入力電圧よりも低いことに注意して下さい。
    はい、弊社のRACVxxシリーズは定電圧出力を提供します。照明用CVドライバーと産業用CV電源の違いは、RACVが完全なLED照明認証を受けていることです。 (注:産業用電源には75W以上のPFCのみが必要です。LED照明規制では、PFCを25Wから規定しています。25Wを越えるPFC以外の電源は使用できません)
    RCDシリーズは、高効率、広い入力範囲、アナログおよびデジタルの2つの異なる調光方法(PWM)、広い動作温度範囲を備えた小型パッケージのオールインワンソリューションであり、完全にテストされています。異なるサプライヤからの全てのコンポーネント、個別のソリューションについて心配する必要はありません。
    はい、AC入力ドライバ用に、0〜10Vのアナログ調光、トライアック調光、熱調光を提供しています。
    MTBF(Mean Time Between Failures=平均故障間隔)は、コンバータの動作を停止させるランダムな障害の可能性に基づいて算出された数値です - 過電圧ストレス、低電圧ストレス、熱ストレス、スイッチングストレス、またはコンポーネントの劣化などの実際のストレス要因はすべて無視されます。稼働寿命と混同しないで下さい。比較のために、25歳の健康な人のMTBFは約800年です - その人が病気にならず、理想的でストレスのないライフスタイルで生き、老化しないのであれば - 死の唯一の原因は偶発的な傷害であるということです - 人は理論的に8世紀を生きるでしょう。MTBFは信頼性の比較尺度ですが、絶対的な尺度ではありません。
    "システム内のコンポーネントのMTBF(平均故障間隔)を加算することで、全体的なボードレベルの信頼性を把握できます。MTBFは全ての電子部品に使用される標準的な尺度であるため、データシートにDC/DCコンバータのMTBF値を記載することは有用です。
    MTBF値を使用して、2つの異なるDC/DC製品の信頼性を比較することもできます。一般に、最高のMTBFを備えた製品は、最高の信頼性を備えています。ただし、異なるメーカー間でMTBF値を比較する時は、それらの算出方法が大きく異なる可能性があるため注意が必要です。"
    MIL STD 217F算出の標準環境はGround Benignです。
    他の環境の補正係数は次のとおりです。

    Ground Benign (GB) 静謐な地上 = 1.00
    Ground mobile (GM) 地上移動 = 0.61
    Naval Sheltered (GNS) 海軍防空 = 0.61
    Aircraft Inhabited Cargo (AIC) 航空機居住貨物 = 0.61
    Space Flight (SF) 宇宙飛行 = 1.00
    Missile Launch (ML) ミサイル発射 = 0.32
    MTBFの逆数(1/MTBF)は、FIT(Failures in Time=故障率)で、10億稼働時間あたりの予測されるランダム故障率を表します。
    MTBFは、MIL STD 217FハンドブックのGround Benign(GB)環境条件に掲載されているコンポーネントの信頼性数値に従って算出されます。
    別の方法は、Bellcore TR-NWT-000332に掲載されている数値を使用することです。
    2つの方法は比較可能ではなく、全く異なる結果が得られます。
    帰還補償回路の不適切な設計、不良な基板レイアウト、部品選定のミスが原因となります。主に帰還ループの位相余裕が不足した場合、出力電圧が発振して安定しない現象が発生します。
    基板レイアウトの最適化、適切なグラウンド設計、シールド実装、フィルタ追加、スイッチング遷移の制御により EMI を抑制可能です。
    ノイズと電圧リップルを最小限に抑えるため、IC の電源ピンの直近に実装する必要があります。
    適切な PCB レイアウトにより寄生インダクタンスを低減し、ノイズを抑制、放熱性能を改善し、コンバータの安定動作を確保できます。
    PCB 銅箔面積の拡大、放熱ビアの活用、回路効率の最適化、通風確保により熱的な課題を抑えられます。
    PMIC は複雑な電子機器内の電力分配を制御する集積回路です。複数の電圧レギュレータ、電源シーケンス制御、バッテリー管理、システム監視機能を単一の半導体素子に統合しているのが一般的です。
    電源 IC は外部部品を多く追加する必要があり、PCB レイアウトの綿密な設計が求められます。追加部品の実装や複雑な基板レイアウトにより、全体の開発工数が増加する点が課題となります。
    DC/DC コンバータ IC、PWM コントローラ IC、ゲートドライバ IC、PMIC、リニアレギュレータ、バッテリー管理 IC が一般的です。
    パワースイッチングトランジスタは主に駆動方式、スイッチング速度、最大耐圧、許容電力によって区分されます。代表的な素子は下記の通りです。MOSFET:最大 100kHz、600V、1kW。SiC:最大 500kHz、3.3kV、100kW。GaN:最大 1MHz、900V、10kW。IGBT:最大 50kHz、6.5kV、1MW。

    MOSFET は低コストで集積が容易なため、スイッチング電源に最も多く採用されます。SiC・GaN は高周波スイッチング用途、IGBT は超大電力・高圧スイッチング用途に適しています。
    主な利点は高集積度、実装面積の小型化、効率向上です。集積型電源 IC により、各用途に特化した最適な電源ソリューションを構築できます。
    電源 IC(パワー集積回路)は電力の調整・変換を目的とした半導体素子です。帰還制御、スイッチング制御、保護機能、電源管理といった必須機能を 1 チップに集積しています。
    電源 IC は制御用半導体チップであり、パワースイッチングトランジスタを内蔵するものが多い一方、インダクタやトランスといった外部磁気部品を別途実装する必要があります。電源モジュールはこれらのディスクリート部品を 1 つのパッケージに一体化した製品で、PCB 設計を簡素化し開発期間を短縮できます。
    産業機器、通信システム、民生電子機器、車載システム、IoT デバイスなど幅広く活用されております。
    電源 IC は高効率なスイッチングトポロジ、最適化された制御アルゴリズム、高速スイッチング周波数を実現し、電力損失を最小限に抑えます。
    設計上の自由度を最大限確保したい、大量生産時のコスト削減を図りたい、独自の電源アーキテクチャを構築したい場合に電源 IC を採用することが多いです。
    イネーブルピンには2つの機能があります。2.6V未満では、コンバータはオフになります(電力出力段はオフになりますが、コンバータの発振器はまだ動作しています)。 1.6V未満では、コンバータは超低電力モード(20µAシャットダウンモード)に入ります。
    R-78シリーズスイッチングコンバータは、全ての動作条件下での安定出力が保証される6mAの最小負荷で使用することをお勧めします。
    RAC04ファミリは-40℃(拡張温度)で動作するため、拡張を表す追加のサフィックス(-E)を付けていません。
    ROF-78のイネーブルピンの最大電圧は約5VDC。
    スレッショホルド電圧は1.25Vであり、それを下回るとコンバータはオフになり、 1.25Vを超えるとコンバーターがオンになります。 0.9Vおよび1.55Vの値は、0.9V未満でオフになり、1.55Vでオンにするための推奨安全値です。
    要するに、デバイスが継続的にオンになることを保証したい場合は、常にENピンに1.55Vを印加して下さい。
    そのピンで許容される絶対最大電圧は15Vですが、5Vより高くすることは推奨されません。入力を制御ピンに直接接続することはできません。
    出力電流がプリセット値を下回っている限り、LEDドライバーはCV(定電圧モード)で動作します。 出力電流がプリセット電流より低い場合、ドライバーはCC(定電流)モードに切り替わります。
    いいえ。スイッチングレギュレータの機能はリニアレギュレータとは異なり、この「トリック」は機能しません。 正しく機能するには、確実なグラウンド接続が必要です。
    Innolineシリーズは全て、各スイッチングサイクルで出力電流を測定するインテリジェントコントローラーを備えています(電流モード制御)。出力が過負荷の場合、過熱してシャットダウンするか(熱保護)、または負荷電流が安全な制限を超えるまでコンバータは過電流を供給します。出力がショートしている場合、コントローラーは出力駆動回路をシャットダウンします。出力状態は継続的に監視され、コンバータは自動的に再起動します。
    コンデンサのタイプは重要ではありません。例えば、低品質ながら比較的高価なESRコンデンサを入力部に配置すると、内部抵抗がスイッチオンサージ発振を減衰させる利点があります。
    入力または出力のMLCCと、並列のタンタルコンデンサまたは電解コンデンサの組み合わせは、両タイプのコンデンサの利点を生み出します(リンギングを減らすための高ESR、ノイズをフィルターするための低ESR)。
    外付け部品は不要です。入力コンデンサが推奨されるのは、入力電圧が26Vを超える場合のみです。出力コンデンサは出力リップルをさらに減らすのに役立ちますが、元々リップルは比較的低いものです。
    可能です。Innolineシリーズのアプリケーションノート内の推奨回路を参考にして、スイッチングレギュレータファミリの各シリーズから負の出力を取得して下さい。
    全てのDC/DCコンバータには入力コンデンサフィルタが内蔵されているため、データシートで規定されていない限り通常の動作に外部コンデンサは不要です。サージ要件を満たすため、または負荷点でのDC電源を平滑化するために入力コンデンサが必要になる場合があります。複数のDC/DCコンバータが同じレールから給電される場合、入力ピンの近くに入力コンデンサを配置することを推奨します。
    データシートには、最大容量性負荷が規定されています。結合容量性負荷が高い場合、電源投入時にコンバータが回路ショートから保護されることがあります。
    スイッチングレギュレータの場合、入力電源が突然切断されてコンバータが損傷すると、出力コンデンサがコンバータ出力に逆放電する場合があります。保護ダイオードを用いることで、この逆電流を回避できます。
    R-78はリニアレギュレータよりも高機能であるため、コストが高くなります。3ピンリニアレギュレータに似ているように見えますが、はるかに効率的で、内部の制御チップは過負荷、過熱、ショートからコンバータを保護します。これにより、非常に堅牢で損傷しにくくなります。
    コンバータ自体のコストが高くても、一次電源で節約できるコスト(出力電流が少なくて済む)、組み立て(邪魔になるヒートシンク、ネジ、ナット、サーマルペーストがない)および在庫(リニアレギュレータ+ヒートシンク+取り付け+入力および出力コンデンサを含めた7つの部品ではなく1つの部品)を考慮すると、R-78の方が「より安い」リニアレギュレータよりも全体的な電源コストが安くなります。
    パワートランスは磁気結合により回路間でエネルギーを伝達する部品で、電圧変換と絶縁用途に使用されます。コア内部の磁束を介してエネルギーを伝送し、コアにギャップを設ける必要はありません。
    トランスは 2 つ以上の巻線を持ち、回路間でエネルギーを伝送します。インダクタは単一巻線により磁界にエネルギーを蓄積する部品です。
    ガルバニック絶縁は安全性を向上させ、グランドループを防止し、高電圧から繊細な回路を保護します。入出力間に直接的な導通経路が存在しないため、商用電源電圧による使用者の感電を防ぎ、ノイズやサージによる低電圧制御回路の故障を回避する上で不可欠です。
    フェライトコア、鉄粉コアが主流で、磁気特性とスイッチング周波数の特性に応じて使い分けます。
    フォワードトランスはスイッチのオン期間中に一次巻線から二次巻線へ直接エネルギーを伝送します。フライバックトランスと異なりコアにエネルギーを蓄積しないため、スイッチオフ時の電流維持には出力インダクタが必要となります。
    フライバックトランスはフライバックトポロジでエネルギーの蓄積・伝送を担う部品です。一般的なトランスと異なり、オン期間中にエネルギーを蓄積するためコアにギャップが必要で、オフ期間に出力側へエネルギーを放出します。また回路起動後にコントローラに電源を供給する補助巻線を搭載するのが一般的です。
    一次巻線と二次巻線の巻数比が電圧変換倍率を決定します。トランス搭載コンバータでは実際の回路損失を考慮して巻線比を調整します。例えば 5V から 5V へ変換するトランスでは、1:1.11 の巻線比が採用されることが多いです。
    絶縁トランスは入力回路と出力回路の間に電気的絶縁(ガルバニックアイソレーション)を確保し、安全対策とノイズ低減を実現します。
    A single-wire communications protocol. Data and addressing can be sent by different timings of the pulses on the wire. Return path is via a common ground connection.
    A two-wire communication protocol, e.g. 4-20mA Loop. Analog measurements are sent by modulating the current in an isolated 2-wire loop. A reading of 100% is 20mA and 0% is 4mA, leaving up to 4mA available to power the sensor. The digital I²C protocol also uses 2-wire communication, but is arranged as clock (SCL) and serial data (SDA) with a common ground.
    In a three-phase power supply system, three live conductors each carry an alternating current of the same frequency and voltage but each with a phase difference of one third of the period (120°). A return (neutral) conductor is not necessary as return currents cancel if the load is equally shared among the phases. Earth is a common reference but no current flows in it.
    A three-wire communication and power protocol, e.g. IO-Link where device power is supplied by one wire and bidirectional data is sent over another wire with a common ground return for both data and power.
    A four-wire communication protocol, e.g. RS485 Modbus. Differential transmit and receive data are sent on separate twisted pairs.
    EN 50155 is the European standard for Railways (rolling stock), commonly accepted worldwide.
    Six-wire communication is commonly used for telecommunications (two twisted pairs + voice). Eight-wire (four twisted pairs) is used for the Ethernet communication protocol.
    The main safety standard for Safety of Household Equipment (often also required by building automation applications). UL, IEC and EN versions of this standard exist.
    The main safety standard for medical-grade power supplies. The international (IEC 60601-1), North American (ANSI/AAMI 60601-1) and the European versions (EN 60601-1) are all very similar, but require separate certificates. The current version is the third edition (3rd Ed.).
    The main EMC standard for medical-grade power supplies. The current version is the fourth edition (4th Ed.).
    The main safety standard, originally intended for office equipment, that has been used for power converters in general. The international version (IEC 60950-1) and the US/Canada versions (UL 60950-1, CSA C22.2 No. 60950) remain valid for legacy products, but the European version (EN 60950-1) has a date-of-withdrawal of the end of 2020, after which it can no longer be used for presumption of CE conformity and other standards must be applied such as EN 62368-1.
    The main safety standard for measurement, control and laboratory equipment. UL, CSA, IEC and EN versions of this standard exist.
    The safety standard for the particular requirements of control equipment. UL 61010-2-201 replaces the popular UL 508 standard.
    The main international safety and EMC standard for LED lighting power supplies. The international (IEC 61347-1) and the European versions (EN 61347-1) are very different from UL8750. IEC/EN 61347-2-13 covers EMC and harmonics interference.
    Power supply safety and switch-mode power supply safety standards. Often used in conjunction with 60355-1.
    The replacement for the 60950-1 standard for audio/visual (AV) and Information and Communication Technologies (ICT) equipment . The new standard is Hazard-Based (HB) which means that in addition to the electrical, fire and other safety tests, an extra risk assessment must be made to identify any serious consequences of faults and abuse.
    UL 8750 is an American safety standard for LED lighting power supplies.
    Analog to Digital converter: A circuit that converts analog signals into digital data (not to be confused with an AC/DC converter).
    Alternating current. Single phase mains (115V in USA, 230V in Europe) alternates its polarity 60 times a second (USA and other countries) or 50 times a second (EU and other countries).

    Safety certification defines various levels of accessibility. Anything that is easily accessible must be safer than something that has restricted access (behind a locked door, at an unreachable height or requiring tools to gain entry, for example).

    The definitions include:

    • Operator Accessible – access can be gained without the use of a tool
    • Restricted Access – access is through use of a tool or lock and key and the service person has been instructed about the necessary precautions
    • Service Access – same as restricted access, but where it may be necessary for the equipment to be kept powered while adjusting or calibrating the system
    An automotive-grade qualification test sequence developed by the AIAG automotive organization. AEC-Q100 covers active components (such as ICs), AEC-Q200 covers passive components and AEC-Q104 covers modules.
    A method for testing ESD-protection in which an ESD generator creates a spark which arcs over to the device under test (DUT).
    Temperature of the air surrounding equipment such as a power supply. The operating temperature given in datasheets of RECOM parts is always the ambient temperature. The maximum case temperature may also be specified (temperature of the case or baseplate). Ambient temperature is measured close to, but not directly above the converter.
    The unit of electrical current. Current is defined as the amount of charge that flows per unit of time. The symbol ‘I’ is used for current in equations and ‘A’ or ‘amp’ is the abbreviation for ampere.
    Commonly used to define battery capacity. One ampere-hour (1Ah) is a current of one ampere flowing for one hour. The amount of charge transferred in that hour is 3,600 coulombs (ampere-seconds).
    Amplifier circuit types are divided into ‘classes’ which describe whether the amplifier operates in a linear, quasi-linear or switching mode, and any techniques used to restore linearity of output. Most common classes are: Class A (analog high quality audio amplifiers), Class AB (analog quasi-linear with better efficiency than Class A) and Class D (digital switching amplifier).
    American National Standards Institute
    Application-Specific Integrated Circuit. Typically, a full custom or a semi-custom IC made up from pre-defined functional blocks.
    Automated Test Equipment. Commonly used in a production line to check the correct functionality of each product manufactured (100% test).
    A transformer that uses a common primary and secondary winding (no isolation). An autotransformer is often used to convert from 115V to 230V or vice-versa.
    American Wire Gauge: A measure of wire thickness (which also dictates cross-sectional area, and for a given material, ampacity). For example: 24 AWG wire has a nominal diameter of 0.02in or 0.511mm. Enamel insulation on the wire adds to the diameter.
    Bandwidth (BW) is a range of frequencies, or information data rate, that a circuit can operate with, or the range of frequencies that a signal contains or occupies. When measuring low-frequency ripple and noise, high frequency interference can give false readings, so the input of an oscilloscope is restricted to a bandwidth of 20MHz using a special filter: ‘20 MHz B/W Restricted’.
    A method of cooling a power converter through an integrated metallic baseplate which is thermally connected to external heatsinking.
    The minimum insulation in a power supply to provide ‘basic’ protection against electric shock. Safety agencies require that an extra level of protection must also be included to achieve ‘double’ or ‘reinforced’ isolation between live and accessible parts that are not earthed.
    Ball Grid Array: A packaging technology where IC connections are made by a grid of solder balls underneath the chip.
    Relating to a device that accommodates signals traveling in either direction though a single channel. A bidirectional DC/DC converter can transfer power in either direction.
    A solid-state device in which the current flow between two terminals (the collector and the emitter) is controlled by the amount of current that flows through a third terminal (the base). BJTs come in two versions: NPN (symbol arrow faces outwards) and PNP (symbol arrow faces inwards). NPN transistors are commonly used to switch a signal to ground. PNP transistors are commonly used to switch a signal to +V.
    A technology that allows voice and data connections between a wide range of mobile and stationary devices through short-range digital two-way radio. A Bluetooth LETM (Low Energy) module is an essential part of most IoT products. It requires either unregulated 4-6Vdc or a regulated 3.3V supply. The consumption varies from <1µA in sleep mode up to >100mA when active.
    Battery Monitoring System. A system that monitors and controls charge and discharge of a battery. It may also monitor the voltage on the individual cells of a battery to ensure that they are equally charged and discharged or ‘balanced’. In which case, an isolated DC/DC converter is often required to power monitoring and charge control circuitry offset from ground potential.
    A switch-mode voltage regulator that steps an input voltage up (boosts it) to a higher, regulated voltage. The input voltage must always be lower than the output voltage. The term normally refers to a non-isolated converter.
    A condition where the voltage supplied to the system momentarily falls below the specified operating range, but not to 0V.
    A 'buck' or 'step-down' switch-mode voltage regulator is one in which the output voltage is always lower than its input voltage.The term normally refers to a non-isolated converter.
    A switch-mode voltage regulator in which output voltage can be above or below the input voltage but with inverted polarity.
    If an AC/DC converter is operated without a load, it may have a burst mode function where the main oscillator is switched on only for a short burst and then switched off. This reduces the no-load power consumption considerably.
    Data or power path that connects to a number of devices.
    Computer-Aided Design/ Computer-Aided Manufacture
    Controller Area Network bus. The CAN protocol is an international data communications standard defined by ISO 11898.
    A capacitor is a passive electronic component that consists of two conductive plates or foils separated by an insulating dielectric. A voltage applied to the plates develops an electric field across the dielectric and causes the plates to accumulate a charge. When the voltage source is removed, the field and the charge remain until discharged, storing energy. Capacitance is measured in farads, but typical values are microfarads (µF), or nanofarads (nF).
    Category 5: Refers to Ethernet cabling that satisfies the criteria for the EIA/TIA-568 standard's Category 5, which allows data transfers up to 100Mbps. The next generation is CAT7 cable which allows up to 1Gbps.
    Cloud-Based Manufacturing (CBM) is a networked manufacturing model that forms temporary, reconfigurable production lines according to demand – both within and across different manufacturing sites - an example of Industry 4.0.
    Constant Current/Constant Voltage: Typical selectable operating modes of a laboratory power supply.
    Charge Coupled Device: One of the two main types of image sensors used in digital cameras. When a picture is taken, the CCD is struck by light coming through the camera's lens. Each of the thousands or millions of tiny pixels that make up the CCD convert this light into electrons. The accumulated charge at each pixel is measured, then converted to a digital value.
    Cold Cathode Fluorescent Lighting: Often used as a backlight for LCD displays.
    Continuous-Conduction Mode; an operating mode of power converters where current in the inductive energy storage element does not fall to zero during each switching cycle.
    Closed Circuit TeleVision: often used in building security systems.
    A circuit using switched capacitors to typically increase a DC voltage. A low cost, low power DC/DC boost converter.
    FCC, EN Class A EMC limits for power converters define the maximum interference generated by equipment (conducted and radiated emissions) and immunity of equipment to interference (conducted and radiated susceptibility) for industrial applications.
    FCC, EN Class B EMC limits for power converters define the maximum interference generated by equipment (conducted and radiated emissions) and immunity of equipment to interference (conducted and radiated susceptibility) for domestic and commercial applications. Class B limits are harsher than Class A EMC limits.
    The minimum distance through air between two conductive parts. Specified by safety standards for electrical isolation.
    When a wanted phenomenon: Fluctuating or jittering the frequency of a clock of a power converter to reduce EMI by spreading the main clock frequency over a wider range which reduces the EMI power in a standard measuring receiver bandwidth, indicating lower EMI levels. (also called spread spectrum). When an unwanted phenomenon: the inaccuracy of a timing clock pulse.
    The Cloud is an on-demand system of interconnected computers that can share resources without direct active management by the user, relying on the Cloud Service Provider (CSP) to manage data traffic and secure the system.
    Complementary Metal-Oxide Semiconductor) technology in which P- and N-channel field effect transistors (FETs) are used in tandem.
    Common Mode Rejection Ratio: A measure of the ability of an amplifier to reject common mode input voltages and not pass them on to its output.
    Refers to voltages which are common to two signal or power lines with respect to ground.
    An electrical inductive filter that blocks high frequency noise common to two or more data or power lines while allowing the desired DC or differential signal to pass.
    Identical unwanted signal components on both the positive and negative inputs or outputs of a power converter with respect to ground. It is attenuated by capacitors to ground and/or a series common-mode choke.
    When a mechanical switch or relay closes, the switch elements will often bounce before making final contact. This is of consequence if the contact passes power to downstream power converters which are sensitive to the switching transients. For relay contacts connecting signals, a contact de-bouncing circuit (also called a snubber) is often used to reduce the effect.
    An ESD test method where the ESD generator makes direct contact with the device under test (DUT).
    The minimum distance across an insulating surface between two conductive parts. Specified by safety standards for electrical isolation.
    For dual or bipolar converters only, the amount by which one output voltage changes when another output is subject to specified load changes.
    A phenomenon where a signal on one conductor is inductively or capacitively coupled to an adjacent conductor. In transformers, leakage capacitance between the windings allows interference generated on the primary to appear on the secondary and vice versa. A low isolation capacitance reduces this effect.
    A power supply protection circuit that rapidly short-circuits (‘crowbars’) a power line if the voltage exceeds a defined limit. In practice, the resulting short blows a fuse or triggers other protection, effectively shutting down the supply. It is usually implemented by an SCR (a latching device that can only be reset by powering off).
    A control function, mainly for DC/DC converters which can be a positive or negative voltage, to enable or disable the output.
    A feature of a power converter that limits input or output current to provide protection against overload.
    An amplifier that measures current by sensing the voltage drop typically across a shunt resistor. The current sense amplifier outputs either a voltage or a current that is proportional to the current through the shunt.
    A function that can be used to force output current sharing of two or more power converters. Typically implemented by interconnecting ‘ishare’ pins of the converters.
    A power converter control method that samples output voltage and switch current on a cycle-by-cycle basis to output a regulated voltage, despite variations in load-current and input-voltage. A higher performance alternative to voltage mode control.
    Digital-to-Analog Converter (DAC): A data converter that receives digital data and outputs a voltage or current proportional to the binary value of the data.
    Direct Current: Current that is unidirectional e.g. from a battery or voltage regulator.
    Discontinuous Conduction Mode: A power converter mode of operation where current in the inductive energy storage element falls to zero in each switching cycle.
    A specified reduction in rated output power of a power converter at higher and sometimes low temperature and at high altitude, necessary to limit converter thermal stress.
    Design Failure Mode and Effects Analysis: A method for evaluating a design for robustness against potential failures.
    Railway applications - Communication, signalling and processing systems - Software for railway control and protection systems; EU version EN 50128:2011
    Railway applications - Communication, signalling and processing systems - Safety related electronic systems for signalling; EU version EN 50129:2018 + AC:2019
    A metal rail of a standard type meeting standard IEC/EN 60715, widely used for mounting circuit breakers and industrial control equipment and power converters inside equipment racks.
    A device that passes current in one direction only.
    24-pin Dual Inline Package: A package design with two rows of 12 pin positions. Other common packages are DIP14 or DIP16 (2x7 or 2x8 pins).
    Electrical isolation between primary and secondary side of a power converter. Double Insulation is the general term for ‘basic’ insulation and necessary additional insulation for agency safety compliance. Each element provides ‘basic’ protection against electric shock.
    Double-Pole/Double-Throw: A mechanical switch with two sets of contacts which can be switched together between two terminals with a center common connection.
    Double-Pole/Single-Throw: A mechanical switch with two sets of contacts which can be opened or closed together.
    One of the three terminals that comprise a Field Effect Transistor (FET). A voltage on the gate controls the current flow in the drain-source channel.
    The minimum input-output differential voltage which is required for a non-isolated DC/DC converter to operate correctly.
    A method for packing SMD parts in a moisture-free environment. The device is baked and immediately sealed in a vacuum-sealed bag. This process is reserved for package types which have a specified Moisture Sensitivity Level (MSL) and are especially susceptible to moisture intrusion.
    A power converter with an additional output available. This can be isolated from the main output or use a common ground.
    A power converter with two power switches operated 180° out of phase to reduce input and output noise and boost output current capability.
    Also ‘transient load response’, the response of a power converter output voltage to rapid load changes.
    The ratio of power converter output power to input power, the standard symbol is the Greek letter ƞ. With no load, the efficiency is always zero (the input side is active, but the load draws no power).
    Electronic Industries Alliance: Among other things, the EIA sponsors electrical and electronic standards.
    Electronic Industries Alliance/Joint Electron Device Engineering Council.
    A standardized converter case size: 2.3 x 0.9 x 0.5 inches (58 x 23 x 12.7mm), normally baseplate-cooled.
    A system in which a computer (generally a microcontroller or microprocessor) is included as an integral part of the system.
    ElectroMagnetic Compatibility: The ability of electronic equipment to be a 'good electromagnetic neighbour'and neither cause, nor be susceptible to, electromagnetic interference (within the limits of applicable standards).
    ElectroMagnetic Emission
    ElectroMagnetic Interference
    ElectroMagnetic Susceptibility
    Railway applications - Fire protection on railway vehicles - Part 1: General; EU version EN 45545-1:2013
    Railway applications - Electromagnetic compatibility - Part 3-2: Rolling stock - Apparatus; EU version EN 50121-3-2:2016
    Railway applications - Electromagnetic compatibility - Part 4: Emission and immunity of the signalling and telecommunications apparatus; EU version EN 50121-4:2016
    Railway applications - Insulation coordination - Part 1: Basic requirements - Clearances and creepage distances for all electrical and electronic equipment; EU version EN 50124-1:2017
    Railway applications - Supply voltages of traction systems; EU version EN 50163:2004
    Railway applications - Rolling stock equipment - Shock and vibration tests (IEC 61373:2010); EU version EN 61373:2010
    (Also known as power harvesting or energy scavenging), the process by which energy is captured from a system's environment and converted into usable electrical power. Energy harvesting allows electronics to operate where there is no conventional power source, eliminating the need to run wires or to replace batteries. An energy harvesting system generally includes circuitry to charge a storage capacitor or battery. Energy source examples include light (captured by photovoltaic cells), vibration or pressure (captured by a piezoelectric element or an oscillating mass with a pick-up coil), temperature differentials (captured by a thermo-electric generator or TEG) or radio energy (captured by an antenna).
    End of Life: After a product has reached End of Life status, it will be removed from the standard product range and is no longer for sale. The datasheet is still available on the RECOM website. In a period before this, the product will be designated as ‘No longer Recommended for New Designs (NRND)’.
    Erasable Programmable Read-Only Memory. Electrically Erasable Programmable Read-Only Memory.
    Energy-related Products: A term used in the EU Eco-design directive. Previously EuP, Energy-using Products.
    Energy Recovery System. Typically refers to methods of recovering electrical energy from kinetic energy such as from a car braking system.
    Electro-Static Discharge: Release of stored static electricity. ESD is generated when two surfaces rub together to build up charges of thousands of volts which then suddenly arc over.
    Devices added to input and output pins of an IC or other component/system to protect the internal circuitry from the damaging effect of electrostatic discharge.
    Equivalent Series Inductance (typically of a capacitor).
    Effective Series Resistance (or Equivalent Series Resistance): The series resistive component of an inductor or capacitor's equivalent circuit. A capacitor can be modelled as an ideal capacitor in series with a resistor and an inductor. The resistor's value is the ESR.
    A system for connecting a number of computer systems to form a local area network, with protocols to control the passing of information and to avoid simultaneous transmission by two or more systems.
    Electric Vehicle. A plug-in EV (PEV) is a pure EV. A hybrid EV (HEV) has both an internal combustion engine and an electric motor. If the internal battery can also be recharged from the mains, it is a plug-in HEV (PHEV). In Asia, EVs are commonly called New Energy Vehicles (NEV).
    (EV Kit, Development Kit): A printed circuit board with an integrated circuit or power converter and support components to produce a working circuit for evaluation and development.
    Evaluation Module
    Offered in some IC packages to improve thermal dissipation or lower the impedance of the ground connection. Normally not electrically isolated, the pad typically needs to be connected to a ground or power plane, depending on the device.
    A design that does not generate a hazardous condition under fault conditions. Fail-safe elements include fuses, over-voltage clamps or over-temperature trips.
    The unit of capacitance.
    Ferrite Bead or Feed-Back.
    A circuit that shapes the frequency-dependent gain and phase response of a feedback loop so that it remains stable under all operating conditions.
    A control loop where negative feedback compares an output with a reference and generates an error signal to correct the output if it drifts. Such feedback loops are the heart of any regulated power converter. Positive feedback is generally avoided in power converters, although it has some uses in oscillator circuits and hysteretic control power converters.
    Field-Effect Transistor: A transistor in which the voltage on one terminal (the gate) creates a field that allows or blocks conduction between the other two terminals (the source and drain). The most common FET is the MOSFET (Metal-Oxide-Semiconductor Field-Effect Transistor) which comes in two versions: N-type (most common) and P-type.
    The Fast Fourier Transform (FFT) is a common algorithm for translating a signal from the time domain, (signal strength as a function of time) to the frequency domain, (signal strength as a function of frequency). It shows the signal's spectral content, divided into discrete frequency bands.
    An industrial network system for real-time distributed control. It is a way to connect instruments in a manufacturing plant. Fieldbus works on a network structure which typically allows daisy-chain, star, ring, branch, and tree network topologies.
    A filter blocks a certain range of frequencies. It can be low-pass (only low frequency signals get through, e.g. a bass filter), high-pass (only high frequency signals get through, e.g. a treble filter) or band-pass (only a certain frequency range of signals gets through, e.g, an equalisation filter). Low-pass filters are commonly used to block EMI and as output networks in power converters.
    Normally a series choke in a power line to filter noise, together with parallel capacitors.
    Failures In Time (number of failures per billion (109) hours). FIT = 109/MTBF (Mean Time Between Failures).
    An output is said to be ‘floating’ if it is not electrically connected to any input voltage supply, ground, or ground-referenced signal source.
    Foldback is a current limiting feature of power converters and power amplifiers. When the load tries to draw overcurrent from the supply, foldback reduces both the output voltage and the output current below normal operating limits. Usually the converter must be disconnected to reset to the original current limit.
    An isolated power converter switching topology that transfers energy to the transformer secondary and output, only when the switching transistor is on.
    Field Programmable Gate Array: A family of general-purpose logic devices that can be configured by the end-user to perform many different, complex, logic functions.
    A standardized converter case size: 4.6 x 2.4 x 0.5 inches (116.8 x 61.0 x 12.7mm) usually baseplate-cooled.
    Electrical isolation which is required for the function of equipment but which does not provide any protection against electric shock if the isolation fails. DC/DC converters may have functional isolation between input and output.
    Gallium Arsenide: A semiconductor material used for optoelectronic products such as LEDs, and for high-speed electronic devices.
    The amount of amplification accomplished by a circuit or transistor. For example, a current gain of 200 would mean output current is scaled to 200x the amplitude of the input current.
    Galvanically isolated circuits such as in a power converter have no common electrical connection between input and output.
    The controlling terminal of a FET. A voltage on the gate controls the current flow between the drain and source or: A basic logic element (e.g. AND, OR, NOT, NAND, NOR, XOR).
    General Purpose Interface Bus: A standard bus for controlling electronic instruments with a computer. Also called IEEE-488 bus because it is defined by ANSI/IEEE Standards 488-1978, and 488.2-1987. Also called HP-IB, a trademarked term of Hewlett-Packard, who invented the protocol.
    General Purpose I/O: A flexible parallel interface that allows a variety of test equipment (bench power supplies, meters, etc.) to be controlled by a central computer.
    Global Positioning System: A satellite-based navigation system in which two or more signals, received from satellites, are used to determine a receiver's position on the globe.
    Graphical User Interface.
    Henry: The unit of inductance. Most EMI filters require inductors or 'chokes' in the range of µH (microhenries) up to a few mH (millihenries). Also ‘magnetising force’ in inductors.
    A standardized converter case size: 2.3 x 2.4 x 0.5 inches (58 x 61 x 12.7mm) usually baseplate-cooled.
    A power converter or drive topology where one end of an inductor or transformer winding is alternately switched from V- to V+, while the other end is fixed at half of the supply voltage.
    Data transmission over a circuit capable of transmitting in either direction, but not simultaneously.
    Highly Accelerated Lifetime Testing/ Highly Accelerated Stress Screening. A way to demonstrate and calculate by extrapolation the expected lifetime and reliability of a product by combining several stress factors such as high temperature, high humidity and shock/vibration. Used to set the warranty period for new products, for example.
    Use of vibration and other mechanical feedback in a Human Machine Interface (HMI) as opposed to visual or audio cues.
    The presence of frequencies in the output of a device or circuit that are not present in the input and are multiples of components of the input signal. Clipping is a common cause but other nonlinearities can also introduce harmonics. In AC/DC power supplies, harmonic distortion normally relates to the unwanted harmonic currents induced in the AC supply by the power supply input circuitry.
    Highway Addressable Remote Transducer communication is a commonly used mode of transmission for digital signals that are superimposed on the analog signal of a 4–20mA current loop. This allows both instantaneous analog readings with supplementary digital data on the same wiring system.
    High-Brightness Light Emitting Diode.
    High-Definition Television: An all-digital system for transmitting a TV signal with far greater resolution than the analog standards (PAL, NTSC, etc.).
    A metal block thermally connected to a heat-producing component, designed to conduct heat away from the device. Most heat sinks are aluminum with fins to increase surface area and encourage the transfer of heat to the surroundings.
    High Electron Mobility Transistor (GaN transistors are HEMT cells).
    HF (High Frequency) is typically between 2MHz to 30MHz. VHF (Very High Frequency) is in the range 30 to 300MHz and UHF (Ultra High Frequency) is 300MHz to 3GHz.
    Abbreviation for High Potential test: The standard test for insulation breakdown voltage. A high voltage is applied across an isolation barrier for 1 second or 1 minute and no arc-over should occur. All RECOM products are 100% Hi-Pot tested in production.
    Hi-Z (or High-Z or high impedance) of a data line refers to an output signal state in which the signal is not being actively driven. The signal is left open, so that another output pin (e.g. elsewhere on a bus) can drive the signal or the signal level can be determined by a passive device (typically, a pull-up resistor).
    ’Hiccup’ behavior of a power converter describes a special form of overload protection. In the event of an output overload or a short circuit, the power supply switches off and attempts to restart cyclically (approximately in the range of seconds) to query the elimination of the overload.
    Human-Machine Interface. How people interact with machines, for example, keyboards, touchscreens or haptic interfaces.
    An industry-standard method for transmitting data via domestic power lines. It can transmit audio, video, control signals, etc. HomePlug is a trademark of the HomePlug Powerline Alliance; Powerline Communications is the generic term for the method. 
    The ability to connect a device, typically a power converter, to an already powered system without any disruption to the system.
    A power supply arrangement consisting of two or more units wired in parallel, any one of which can be removed and replaced while the system remains powered up, without interruption to the output supply to the load.
    An ESD test method where the ESD generator consists of a charged 100pF capacitor and a 1.5k ohm series resistor which matches the typical real-life values of a charged human being.
    Heating, Ventilation, and Air Conditioning: An Industry term for the systems and technology responsible for the heating, ventilation, and air conditioning in buildings.
    The phenomenon in which the value of a physical property lags behind changes in the effect causing it, as for instance when magnetic induction lags behind the magnetizing force.
    A power converter topology characterised by positive feedback, used for simple regulated DC/DC converters.
    Hertz: A measure of frequency. An older term is cycles per second, or cps.
    Quiescent current. IQ(Q should be subscripted but is sometimes printed as 'IQ' without subscripting) is the no-load input current drawn by a power converter.
    A protocol for intra-board digital communication which may be used for diagnostics and control of power converters. I²C (pronounced 'I-squared-C' and typeset as I²C but often typed as I2C) is short for 'inter-IC bus.' I²C is a two-wire, low-speed, serial data connection bus used to interconnect integrated circuits, generally on the same board.
    Integrated circuit: A semiconductor device that combines multiple transistors and other components and interconnects on a single piece of semiconductor material (die).
    The International Electrotechnical Commission prepares and publishes international standards for all electrical, electronic and related technologies. IEC standards are accepted in 34 countries (including those in Europe as well as Australia, Canada, USA, India, Israel, Korea and USSR).
    The Institute of Electrical and Electronics Engineers, IEEE (Eye-triple-E) is a non-profit, professional association of more than 360,000 individual members in approximately 175 countries. The IEEE also sponsors many electrical and electronic standards.
    Impedance, represented by the symbol Z, is a measure of the opposition to electrical current flow. It is measured in ohms. For DC systems, impedance and resistance are the same (Z=R=V/I). In AC systems, 'reactance' enters the equation due to the frequency-dependent contributions of capacitance and inductance. Impedance in an AC system is the vector sum of reactance and resistance and is still measured in ohms and represented by the equation Z = V/I, but V and I are frequency-dependent.
    The very rapid change in voltage across an inductor when current flow is interrupted. Snubber diodes are often used to clamp this energy in relay coils, and other inductive loads. Kickback can be a problem (causing EMI and component failure) or it can be used in ‘boost’ or ‘flyback’ power supply circuits to develop higher or opposite-polarity voltages from a single supply.
    After iron & steam, electricity and computing, the 4th industrial revolution will be networked industry which can automatically predict and repair faults, adapt to changes or new conditions and rearrange production and logistics for maximum efficiency, quality and safety, e.g. Cloud-Based Manufacturing
    An Ingress Protection (IP) rating indicates how well an enclosure is protected from penetration by foreign objects (first number) and by contaminants such as dust or fluids (second number). Common IP ratings are:
    • IP20 = Protected against fingers touching live parts, but not against moisture.
    • IP44 = Protected against 1mm particle ingress and splashing water.
    • IP67 = Dust tight and protected against water ingress up to 1m immersion.

    An ‘intelligent’ circuit which can reduce inrush currents during start up of power converters.
    A momentary input current surge, measured during the initial turn-on of a power converter, usually dominated by charging current of input capacitors. This current reduces to a lower steady-state value once the converter is running. The inrush current can be very high (typically 10x steady-state input current) but usually lasts only a few milliseconds. If a converter has a soft-start circuit, the inrush current peak can be substantially reduced at the expense of turn-on delay.
    A non-conductive barrier between two conducting materials, for example, the plastic bobbin that insulates the primary and secondary windings in a transformer from each other and also the core.
    Safety standards specify three classes or grades of insulation: Functional, where there is no separate physical barrier between conductors except the insulation coating on wires or a minimal separation, Basic, where there is a physical barrier in addition to the wire coating or a prescribed physical separation, and Reinforced, where there are two independent physical barriers in addition to the coating on the wires, or a larger prescribed physical separation, or a minimum solid thickness of insulation. Supplementary insulation is a barrier in addition to Basic insulation that is equivalent to Reinforced isolation.
    Intellectual Property, IP, is creation of the intellect such as trade knowledge, technical information, and literary or artistic work, including patents, copyrights, and trademarks. The 'Know-how' in a business.
    The standard method for data transfer used on the Internet. Also known as IP or TCP/IP.
    A logic circuit which inverts a signal or a power converter that produces AC output, either line voltage and frequency or variable voltage and frequency for motor drives, for example.
    A switch-mode voltage regulator in which output voltage is negative with respect to its input voltage. An example is the ‘buck-boost’ regulator.
    Internet of Everything. A superset of IoT that includes people, processes, data and IoT devices in one intelligent, networked fabric. IoE connects people in more relevant ways, delivers the right information to the right person or device at the right time and interprets data to allow useful decision making.
    Internet of Things. A network of ‘smart’ devices, each with a unique IP address to allow internet connectivity. IoT allows embedded technology to communicate and interact with the environment, people and other machines.
    An IoT device consists of three distinct elements: a sensor or actuator, a controller to make it 'smart' and an internet connection.
    Internet Protocol Version 6: Internet Communications protocol with a 128 bit address-space, multi-casting and auto-configuration. It has the ability to uniquely address up to 3.4x1038 individual devices and is essential for the IoT concept.
    Infrared: Light that has a frequency just below the visible light spectrum, used for remote controls and night vision applications, for example.
    Industrial, Scientific and Medical: Radio frequency bands made available for use by communication equipment without license, within certain maximum emitted power limits. Equipment which uses the ISM band must tolerate interference from other such equipment. Common uses include WiFi (802.11a, b, and g) and cordless phones.
    International Standards Organization. ISO9001 for example, is the main quality control standard for companies and organisations.
    Quality management system based on ISO 9001 for the automotive industry supply chain and production.
    See Galvanic Isolation
    Between any two separated conductors, an isolation resistance exists that can pass DC current and a coupling capacitance that can pass AC current. In DC/DC converters, the isolation resistance is 100M Ohms or higher, so can usually be ignored. The isolation coupling capacitance can range from 200pF to as low as 4pF depending on the transformer construction. Low coupling capacitance is desirable in fast switching circuits where the DC/DC converter ‘sees’ external high voltage, signals with high slew rate, on its output.
    The maximum voltage which can be applied for a defined time between the primary and secondary side of a transformer or power converter without breakdown.
    Joint Electron Device Engineering Council. JEDEC J-STD-020D is the main standard for SMD soldering.
    A Junction Field-Effect transistor, or JUGFET, is an FET in which the gate is created by a reverse-biased junction (as opposed to the MOSFET which controls drain-source current by a field generated by a gate, separated from the drain-source channel by a thin insulator).
    Abbreviated J: A measure of energy or work. One joule is one watt of power, applied for one second (a watt-second). The energy absorption capability of transient protection components (diodes, varistors, etc.) is measured in joules.
    Joint Photographic Experts Group; more commonly, files that are compressed using the JPEG standard.
    Kelvin: Temperature scale. Zero K is defined as absolute zero. +273.15K is 0°C. The K symbol is uppercase and used without a degree symbol. Kilo: Metric unit representing 1000. E.g. 1kHz is 1 kilohertz (1000 Hertz). Note that the k is always lowercase.
    The area under a power converter on a circuit board that the layout design cannot use, due to the danger of short circuiting to the case or to high voltage pins.
    A Kelvin connection is a separate connection for measuring the voltage at a node independently of the current flowing through that node. Kelvin connections are commonly used in power transistors and in shunt resistors.
    A product with the designation NRND (Not Recommended for New Designs) can also have a last time buy date found in the header of the datasheet. The product can be ordered up to this date but no later. The product has then reached EoL status.
    Low Drop Out (regulator): A linear voltage regulator that will operate with a very small differential voltage between input and output.
    Undesirable AC or DC current flow, typically across power transformers or from power supply input connections to ground.
    Light-Emitting Diode. A diode which emits electroluminescence with a frequency (color) determined by the band-gap energy of the P-N junction. White light LEDs are made by either combining three red, green and blue LEDs in one package or by using a phosphor coating to convert UV to visible light.
    Land Grid Array: An IC packaging technology where the device’s SMT connections are made by a grid of flat pads on the bottom of the package.
    An indication of power rating reduction necessary in a power converter caused by changed input voltage. At lower input voltages the input current increases for the same output power and efficiency. Higher currents cause higher resistive losses, so line derating is often required.
    The ability of a stabilised power converter to maintain its output voltage despite variations in its input voltage, expressed as a percentage output voltage change across an specified input voltage range.
    A voltage regulator that is placed between a supply and the load which provides a constant voltage by varying its effective resistance. Excess power is dissipated as heat, so typical linear regulators are only 60% efficient or less.
    Lithium batteries (typically in coin-shaped cells), are used for low-power, high-reliability, long-life applications such as power for non-volatile memory and real time clocks. The cells can use a variety of lithium-based chemistries (as differentiated from lithium-ion).
    Lithium-ion (Li+, Li-Ion, Lion) cells are generally used as power sources for portable equipment. They are usually rechargeable. Lithium-ion and Nickel-Metal-Hydride (NiMH) have displaced Nickel-Cadmium (NiCd or nicad) as the dominant rechargeable chemistry for portable applications.
    A resonant power converter topology using an additional inductor and capacitors connected in series/parallel with the transformer primary winding inductance to make a resonant ‘tank’ circuit so that the voltage across the transformer primary is sinusoidal or very close to it. A very efficient topology for higher power converters.
    The ability of a power converter to maintain its output voltage despite variations in the load current. Expressed as a percentage output voltage change for a specified load current change.
    The minimum allowable input voltage for a power converter. At full load, this is the highest input current condition.
    Machine-to-Machine communications, where smart nodes talk to each other via wireless technologies such as the cell phone network, WLAN, Bluetooth or Zigbee without human interaction. Applications include automatic meter reading, fleet management, vending, monitoring and control, security and alarms, and telemedicine.
    Milliampere, or milliamp: 1/1000 of an ampere, the basic unit of electrical current. The ‘m’ is always lower case.
    Manchester encoding is a form of Binary Phase-Shift Keying (BPSK) used for low-cost radio-frequency (RF) transmission of digital data. Its main characteristic is that it encodes data in a way that ensures that there are never long strings of continuous zeros or ones. The presence of guaranteed transitions means that a clock can be recovered from the transmitted data, allowing the link to function with variable signal strengths from transmitters with imprecise, low-cost, data-rate clocks.
    A test procedure that determines ’safety margin’. A parameter is varied to determine a device's sensitivity or ability to perform, given a range of inputs. A large number of parts can be characterized to determine a safe range for the specification, to guarantee performance and yield.
    Micro-Electro-Mechanical Systems: Systems that combine mechanical and electrical components on the same die and are assembled using semiconductor fabrication techniques. Common examples are pressure and acceleration sensors which combine the sensor and associated amplification or conditioning circuitry.
    (MOV, or surge-suppressor): A discrete electronic component that diverts current from excessive voltage to ground in DC systems or neutral lines in AC systems. It is commonly used on the inputs of AC/DC power supplies to suppress differential input voltage surges. A MOV can divert and dissipate high energy, but reacts slowly and its breakover point is not well defined, so it is often used in combination with a transient suppressor diode that reacts quickly and has an accurate breakover voltage, but has limited power absorption characteristics. MOVs degrade with use.
    A Multiple Input, Multiple Output (MIMO) system has multiple antennas and multiple radios. MIMO is used in the implementation of the 802.11n wireless LAN standard.
    Multi-Layer Ceramic Capacitors are generally the device of choice for applications where medium-value capacitances are needed, 1nF - 100uF. They are used as bypass capacitors, in op-amp circuits, filters, and more. They are increasingly used as the main filter capacitors in the outputs of power converters.
    Means of Patient Protection/Means of Operator Protection:MOPP and MOOP are defined by medical electrical safety standard IEC 606001-1 and are formal descriptions of methods of ensuring protection against electric shock in the medical environment.
    Metal-Oxide Semiconductor Field-Effect Transistor: In a MOSFET, the channel between the drain and source contacts is controlled by a metal gate separated from the channel by a very thin insulating layer of oxide. The gate voltage establishes a field that allows or blocks current flow in the channel.
    Old term for a Micro-Processing Unit (Microprocessor).
    Moisture Sensitivity Level is a measure of the sensitivity of an SMD part to air moisture, defined as the length of time of exposure allowed, from MSL1 (insensitive) to MSL5A (24 hours), with MSL6 reserved for components that must be baked in a drying oven before use. Above MSL2 requires dry-pack.
    Mean Time Between Failures. A statistical measure of the reliability of an installed population of components, modules or systems during their operating lifetime. Numerically, the inverse of failure rate.
    In radio transmission, multipath refers to the simultaneous reception of two copies of a signal that arrive via separate paths with different delays. A common example is when a signal bounces off a building or other object and is received along with the direct (unbounced) signal. In television reception, this causes 'ghosting', a faded echo is seen on the screen horizontally displaced from the main image. One of the main reasons why GPS does not work well in large cities is multipath signals bouncing off tall buildings.
    If anything can go wrong, it will.
    One milliwatt is 1/1000 of a watt.
    One megawatt is 1 million watts. Always capital M when stated as ‘MW’, for example.
    Nanoampere(s): Unit of current measurement. A billionth of an amp.
    Not Connected. Used to denote a pin that is present only for mechanical stability. It is not normally electrically connected internally, but this is not a hard-and-fast rule. If a pin is labelled as ‘NC’, the pin should be soldered onto its own isolated pad and not connected to any other pin.
    Without galvanic isolation that is, with no common electrical connection.
    Non-Recurring Engineering cost: One-time engineering costs associated with a project (usually for the design effort or for tooling or certifications).
    A product Not Recommended for New Designs will be withdrawn at some future date. The NRND status can be found on the RECOM website and on the datasheet of the relevant series and/or product. If an alternative product is available, a button will indicate this.
    Negative Temperature Coefficient (thermistor): A component whose resistance decreases with increasing temperature. The nominal resistance value is always given at 25°C (room temperature).
    In A/D conversion, the Nyquist principle (derived from the Nyquist-Shannon sampling theorem) states that the sampling rate must be at least twice the maximum bandwidth of the analog signal in order to allow the signal to be reproduced. The maximum bandwidth of the signal (half the sampling rate) is commonly called the Nyquist frequency.
    Over-Current Protection. Electronic limitation of load current to protect a power converter. Typical techniques are to limit current to a set value, ‘foldback’ the current to a safe value with increasing load or ‘hiccup’ protection (the output is turned off and then back on again after a delay. If the overcurrent condition still exists, the cycle repeats).
    Original Equipment Manufacturer: A manufacturer who controls sourcing of material and assembly of products for onward sale and distribution sometimes under different branding.
    A power converter design without a case or housing.
    Organic Light-Emitting Diode: An LED made with organic materials. Useful for flat film displays, but still rather weak compared with standard LEDs.
    Operational amplifier: An amplifier which has inverting and non-inverting inputs allowing use of feedback to achieve a wide range of functions. Op amps can be configured to form amplifiers, comparators, logarithmic functions, filters, oscillators, data converters, level translators, voltage references and more. Analog mathematical functions such as addition, subtraction, multiplication, and integration can also be easily accomplished. A rail-to-rail op amp can work with input signals up to its own supply voltages.
    An open-drain or open-collector output is driven by a single transistor, which pulls the output only down to ground. The output must be pulled up to +V by the load or by an external pull-up resistor.
    The operating temperature (range) over which a device is warranted to perform to published specifications – refer also to power derating.
    OR-ing diodes are used in series with the outputs of separate power converters connected to a common load in a redundant configuration for high system availability. OR-ing diodes prevent failure of one converter from affecting others and facilitate ‘hot-swapping’.
    Circuitry that shuts a power converter down when an internal preset temperature is exceeded.
    The facility in a power converter to adjust the output voltage within a limited range. Adjustment may be either by resistor value or external applied voltage to an adjustment pin.
    Over-Voltage Protection (OVP) in a power converter refers to a circuit that protects downstream circuitry from damage due to excessive output voltage, typically when output regulation circuitry fails. At its simplest, it is a Zener diode across the output which clamps the voltage and then typically fails short circuit, shutting down the converter. A more controlled technique is to add a separate opto-coupler which is triggered by an output overvoltage condition to shut-down the power supply on the input side.
    A P-channel Metal-Oxide Semiconductor transistor is one in which P-type dopants are used in the gate region of the 'channel'. A negative voltage on the gate turns the device on.
    Peak-to-peak. Often used as a measure of the output voltage ripple.
    A multiline channel interface, with each line capable of transmitting several bits of data simultaneously.
    Refer also to Ishare. Some power converters can be connected in parallel to increase the current available for a load, typically with an active or passive load share function. Parallel operation can also be used for redundancy where one or more ‘redundant’ power converters can be removed from the system leaving sufficient power available for the load.
    Periodic And Random Deviation: A measure of the total voltage ripple and noise on a power converter output.
    A non-destructive way of testing for isolation strength. A Hi-Pot test is very destructive because if an insulator fails, the arc-over destroys the part. PD testing measures the charge migration through the insulation layers and will stop the test before any permanent damage occurs.
    Picocoulomb(s), a unit of electrical charge (10-12 coulombs). Used as a measure of partial discharge in insulation testing.
    Printed Circuit Board: The most common PCB material is FR4: a glass fibre reinforced laminate which is flame resistant in compliance with UL94V-0
    Pulse-Code Modulation: The conversion of an analog signal into binary (0 or 1) coded pulses. Not to be confused with PWM.
    Abbreviation for pieces.
    Peak Reverse Voltage (PRV:, The maximum voltage a diode or other device is rated to withstand when reverse-biased.
    Power Factor Correction: A passive or active circuit that synchronises and shapes the AC mains input current to better match the mains input voltage. When current and voltage are perfectly aligned, the power factor (PF) is unity. Passive PFC circuits can typically improve the PF from around 0.4 to 0.7, active PFC circuits can achieve >0.99. PFC is required by the EMC standards for AC/DC power supplies of >75W, but for LED drivers, the limit is 25W.
    Pulse-Frequency Modulation: A pulse modulation technique in which the frequency is varied with an input signal amplitude. The duty cycle of the modulated signal does not change. Commonly used to reduce the quiescent input current in a power converter by reducing the switching frequency at low loads.
    Process Failure Mode and Effects Analysis (PFMEA): A methodology for assessing the weaknesses of production processes and the potential effects of process failures on the product being manufactured.
    Power-good: A pin that is only active when the output voltage of a power converter is within specification.
    A Programmable Logic Controller (PLC, or Programmable Controller) is a ruggedised, typically DIN rail mounted, microprocessor-based control system for plant automation by monitoring sensors and controlling actuators (relays/pneumatic /hydraulic valves) in real time. Commonly used with 24V DIN rail power supplies.
    Plastic Leaded Chip Carrier: A square surface-mount IC package in plastic with leads (pins) on all four sides.
    A Phase-Locked Loop: A control system that generates a signal that has a fixed relation to the phase of a 'reference' signal. A phase-locked loop circuit responds to both the frequency and the phase of the input signals, automatically raising or lowering the frequency of a controlled oscillator until it is matched in both frequency and phase.
    Power Management Bus is a communications protocol targeted at digital management of power converters.The PMBus typically uses I2C hardware.
    Power-over-Ethernet: A means for delivering power to a remote device using the same cable lines used to deliver Ethernet data. Can be used to power remote devices (cameras, LED-lighting, door entry systems) over a single combined power and bi-directional data cable. The nominal PoE voltage supply is 44-57VDC, so a DC/DC converter is typically required at the end device. This DC/DC must negotiate with the primary power supply to release enough current for its needs (available power is restricted between 4W and 100W depending on a complex sequence of signature resistances offered by the DC/DC negotiation IC). The relevant standard defining this interface is IEEE 802.3af /at/bt. Many think that PoE is the future for indoor LED lighting.
    Power-OK: A signal indicating that a voltage rail is within specification.
    The technique of placing a separate voltage regulator on the output of a typically un-regulated power converter.
    A variable resistor in which a ‘wiper’ sweeps from one end of a resistive element to the other, resulting in resistance that is proportional to the wiper's position. Commonly abbreviated to ‘pot’.
    Generic term for a circuit that converts AC to DC, DC to DC, AC to AC or DC to AC with or without isolation.
    A signal, often generated by an AC/DC power supply that provides early warning to a system of imminent power failure.
    A signal which indicates the status of a power converter.
    Step-down non-isolated buck regulator typically in a SMD format with integrated passive and active components in a single package.
    A term taken usually to mean an AC to DC power converter.
    Production Part Approval Process: Used by the automotive industry for acceptance of new or modified products for release and use on automobiles.
    A vendor-independent open Fieldbus standard used in manufacturing, building automation, and process control. Utilizes a non-powered two-wire (RS-485) network.
    Phase-Shifted Full Bridge: A full bridge power conversion topology where the switching waveforms have a fixed 50% duty cycle but are phase shifted to control the power delivery and regulate output voltage. Particularly suitable for high power converters.
    Positive Temperature Coefficient (thermistor): When the resistance of a component rises with temperature, it is said to have a positive temperature coefficient. Example: Hewlett-Packard's first commercial product, an audio oscillator, used a common light bulb as a PTC element in the feedback circuit to maintain constant output amplitude regardless of frequency. PTC Thermistors can be used in power supplies for overtemperature protection and temperature measurement.
    Pulse Width Modulation. A technique to vary the duty cycle of a periodic waveform to increase or decrease its average value. In switch-mode power converters, the duty cycle of the oscillator driving the main power switch is varied to maintain the desired output voltage.
    A measure of the quality of a resonant (tank) circuit. A ‘high-Q’ circuit has mostly reactive components (inductive and capacitive), with low resistance. It resonates strongly, with little damping, and will have low bandwidth relative to its center frequency (that is, it will have a narrow bandwidth vs frequency curve). Q = 2 π * (Energy stored / Energy dissipated per cycle).
    Quad, Flat, No-lead package.
    Reverse recovery charge: the charge that accumulates on a PN junction when it is forward biased. The current needed to overcome the Qrr when a transistor or diode is reverse biased causes significant losses.
    A standardized converter case size: 2.3 x 1.45 x 0.5 inches (58 x 37 x 12.7mm), usually baseplate-cooled.
    A Flyback power converter topology where the transformer primary winding is not switched on when the output current falls to zero, but kept off until the primary voltage starts to resonantly drop. The primary is switched on at one of the resonant minima (valley switching) where the voltage stress across the switching transistor is at a minimum. Q-R switching is thus highly efficient.
    The supply current consumed by a power converter with no-load, but still enabled.
    The drain-to-source resistance of a switching FET or MOSFET when it is turned on. The lower the RDS(on) value, the lower the conduction losses in the device.
    Redundant Array of Independent Disks: A redundant array of inexpensive disks. RAID is a performance-enhancing method of storing the same data in different places on multiple hard disks to achieve high speed and/or data redundancy.
    Commonly used to describe Op-amps that can be operated from single power rails (no negative supply) and whose input and output voltages include the power rails.
    Random Access Memory
    Resistance-Capacitance: An RC network comprises resistors and capacitors typically in a series-parallel combination to filter or delay a signal.
    DC/DC converters contain power oscillators that draw current peaks every cycle. This is seen as a ripple current superimposed on the average DC input current. Measured as a peak-to-peak or rms value.
    The minimum electrical isolation between primary and secondary side of a power converter to achieve agency-rated protection against electrical shock. Reinforced insulation is equivalent to Double Insulation and can be achieved with minimum creepage and clearance, solid insulation of a specified thickness or multiple layers of thin insulation, each rated for the full specified isolation test voltage.
    Used to compensate for voltage drops in connections to a power converter load. Implemented with positive and negative ‘sense’ wires which connect to the point where most accurate regulation is required.
    A resonant, or tuned, circuit combines an inductor and capacitor to make a circuit that has an impedance peak or dip at a particular frequency. Depending on the configuration, the circuit can operate as a band pass or band stop filter, or as an oscillator with associated active components. It may be called an LC, LLC or LRC circuit because of the inductive (L), resistive (R), and capacitive (C) components used.
    When switching from the conducting to the blocking state, a diode junction has stored charge that must first be ‘recovered’. This discharge takes a finite amount of time known as the Reverse Recovery Time, during which the diode does not block the reverse current. When dealing with high frequency oscillators or very steeply rising signals, the reverse recovery time can lead to significant losses in a circuit, as high current and high reverse voltage can be present simultaneously.
    Radio Frequency Interference: Redundant Array of Independent DisksRedundant Array of Independent Disks.
    Radio Frequency IDentification: A method for remotely identifying an object using a tag or module that carries a unique ID code, which can be activated by an external RF field which powers the tag, enabling transmission of the code back to a ‘reader’.
    Relative Humidity: Normal room humidity is between 40-60% rH.
    The voltage ripple and noise caused by the internal switching of a power converter which can be seen at the output terminals. Measured values are strongly dependent on test methods.
    The rise time (or slew rate) of the output voltage of a power converter on power-up, typically measured from 10 - 90% of nominal output.
    Root Mean Square value of a waveform is the equivalent DC value that would deliver the same power to a given load (the average value of a 50/60Hz sine wave is zero as positive and negative half-cycles cancel out, so RMS must be used instead). For example, 115VAC is the RMS value of the US mains supply. The peak voltage is actually ≈163V.
    The term serial interface is often used for an RS-232 interface, consisting of Tx, Rx and ground wires, plus optional RTS and DSR handshaking lines. However, there are other serial interfaces in addition to RS-232 (e.g. RS-422)
    RS-485 and RS-422 are serial interface standards in which data is sent in a differential pair (two wires, or twisted pair cable), which allows greater distances and higher data rates than RS-232.
    Real-Time Clock: An Integrated circuit that contains a timer that supplies the time/date, usually powered by a long-life battery to allow it to keep track of time even when there is no system power applied.
    Siemens, the standard unit for conductance (the inverse of resistance). Siemens is used for singular and plural. Lower case s is the standard abbreviation for seconds.
    Surface Acoustic Wave: A sound wave that propagates along a hard surface. Used to make touchscreens by timing when and where a finger stops the wave.
    Also known as Euro-connector, a 21-pin connector commonly used in Europe to interconnect satellite receivers, television sets, and other AV equipment. Sometimes needs a DC/DC converter to supply a 10-12V ‘Device present’ signal.
    A 'Schottky-barrier junction' is a metal-semiconductor junction, rather than the P-N junction used in conventional semiconductor diodes. Schottky diodes are often chosen for their high switching speed and low forward voltage drop, (around 0.3V, compared to a standard diode’s typical 0.7V).
    Silicon-Controlled Rectifier: A semiconductor switch that once activated by a gate voltage, stays on until the input voltage turns off or reverses and therefore can be used as a latch. Typical uses include fault protection (OVP, OTP) which forces the user to turn off the device to reset the SCR.
    Secure Digital, a media format for non-volatile external memory cards. SD memories typically operate from 3.3V supplies and are best known as storage for digital cameras, smart phones, and other consumer electronic devices.
    A resistor placed in a current path to allow the current to be measured. The voltage across the sense resistor is proportional to the current that is being measured. Typical value is in milliohms. A Kelvin shunt has separate current and voltage connections to increase the measurement accuracy.
    Single Ended Primary Inductor Converter: A non-inverting, non-isolated DC-DC converter topology that acts both as a boost and a buck converter, that is, the output voltage can be higher or lower than the input voltage.
    A control pin typically used for sequencing of the turn-on or turn-off of a power converter with other converters.
    A digital interface in which data is sent in a single stream of bits, usually on a single wire-plus-ground, wire-pair, or single wireless channel (or two sets, one for each direction). Examples include USB, RS-232 and I2C
    In one ‘leg’ of bridge power converter topologies, one transistor ‘pushes’ current to the output to drive it toward a positive voltage; a second device ‘pulls’ current down to 0V. The transistor drivers are designed so both devices should never be on at the same time, which would effectively short the power supply. However, unintentional timing delays can sometimes cause both to be on simultaneously and the transient, high current that occurs while both devices are on is called shoot-through current.
    The ratio of the amplitude of a desired signal to the amplitude of superimposed noise signals. Usually expressed in decibels, dB. The larger the number, the better for data or signal quality
    Subscriber Identity Module: A SIM card identifies your cellphone so the system knows which phone should ring when someone calls your number.
    A topology where only one end of a transformer primary winding is switched, the other end being permanently connected to a DC bus voltage. Used in both DC/DC and AC/DC converters.
    A sensor that processes the raw measurement data and only sends relevant updates to reduce the amount of data traffic. Important for the concept of IoT if billions of devices are to be networked.
    System Management Bus: A 2-wire serial-interface standard similar to I²C, but with a faster clock speed.
    Surface Mount Device: An electronic component that mounts on the surface of a printed circuit board (as opposed to 'through-hole' or THT components which have pins or leads that are inserted into holes).
    Switch-Mode Power Supply. Much more efficient than ’linear’ power supplies, so almost exclusively used for power conversion above a few watts (with the exception of powering broadband RF amplifiers where the switching harmonics can cause interference).
    Surface Mount Technology
    Small Outline Integrated Circuit. If an SMD IC has 8 pins, it is often an SOIC-8
    The connection to a MOSFET conduction channel, opposite the drain.
    Serial Peripheral Interface. A 3-wire serial interface.
    Simulation Program with IC Emphasis. Software which allows a circuit to be simulated to predict its real-life behavior.
    Techniques used to reduce electromagnetic interference by dithering a power converter clock frequency so emissions are no longer concentrated at one frequency.
    Single-Pole/Single-Throw switch.
    Static RAM: Random Access Memory that does not require a clock to retain its data.
    Soft-start: Typically a pin on an IC to which a capacitor can be connected to set the start-up timing of a power converter to reduce the inrush current and/or output slew rate.
    Shrink Small-Outline (IC) Package
    A layout or wiring technique in which all components connect to ground at a single point.
    Set Top Box: Typically a cable or satellite TV receiver.
    A switch-mode voltage regulator in which output voltage is higher than its input voltage (boost converter).
    Power converter topology with a switching transistor and an inductive or sometimes capacitive energy storage element.
    A voltage regulator that uses a switching element to transform the supply into an alternating current, which is then converted to a different voltage using capacitors, inductors, and other elements, then converted back to DC. The switching regulator term often refers to an non-isolated converter.
    A System on a Chip (SoC) integrates most of a system's elements on a single integrated circuit (chip). It typically combines a microprocessor core along with interface elements and analog and mixed signal functions.
    A tap is an additional connection to a transformer winding besides the ends. The most common arrangements are the centre-tap in the middle of the winding and asymmetric taps used to make a 50/60Hz transformer primary compatible with 100 V, 115 V, 120 or 230/240 VAC supplies by connecting to the appropriate tap.
    Abbreviation for case temperature. The hottest case point and the maximum allowable operating temperature must be marked on all LED lighting AC/DC drivers.
    Transmission Control Protocol/Internet Protocol: The protocols or conventions that computers use to communicate over the Internet.
    A Thermo Electric Cooler is a small cooling device that relies on a semiconductor Peltier effect junction. Composed of two semiconductors made of different materials, a Peltier junction acts as a heat pump which can cool or warm when current is passed through it.
    Temperature coefficient: The amount a value drifts with temperature in %/°C
    Tesla (abbreviated T) is a measure of magnetic flux density (B-field), named for engineer and inventor Nikola Tesla. 1 tesla=10,000 gauss.
    Thin-Film Transistor
    Total Harmonic Distortion: A measure of signal distortion which assesses the energy in harmonics in a distorted signal compared with an original signal.
    An indication of power reduction required by changed ambient temperature. At higher ambient temperatures the headroom to the internal temperature limits in a power converter will decrease. Above a certain temperature, a load reduction is required to reduce internal losses and for internal heat dissipation to stay below acceptable limits. Some power converters also require power derating at low temperatures to ensure start-up.
    The use of various cooling methods, such as heatsinks, thermal interface materials (TIM) or fans to control temperature of power converters and their internal components.
    Deactivation of a circuit when a measured temperature exceeds a predetermined value. Can be latch-off or auto-reset upon cooling down. The reset temperature is typically lower than the trip temperature, exhibiting hysteresis.
    A resistor with a high temperature coefficient. As a negative temperature thermistor, it can be used as a series inrush current limiter (high resistance when cold, low resistance when hot).
    A temperature sensor formed by the junction of two dissimilar metals. A thermocouple produces a voltage proportional to the difference in temperature between the hot junction and the lead wire (cold) junction.
    A three-state output has three electrical states: One, zero, and ‘Hi-Z’, or open’. ‘Tri-State’ is a registered trade mark.
    A method for mounting components on a printed circuit board (PCB) in which pins or leads of the component are inserted into holes in the board and soldered in place.
    Through-Hole Technology
    Tin whiskers (also called Sn whiskers or metal whiskers) are microscopic, conductive, hair-like crystals that emanate spontaneously from pure tin surfaces and can cause short circuits and malfunction. There are various whisker mitigation processes that can be applied to reduce this effect, such as matt finishes, under-plating or over-plating.
    A standard logic gate output structure, originally implemented with bipolar transistors, but now typically in CMOS, where a P-channel MOSFET is connected in series with an N-Channel MOSFET and the connection point between the two is the output. The P-FET sits on top of the N-FET like a ‘totem pole’. This creates a push-pull output using just two transistors.
    Thin version of the QFN package (the JEDEC 'W' option) 0.8mm thick.
    Thin Quad Flat Pack
    An amplifier that converts a voltage to a current. Also known by several other terms, such as OTA, or Operational Transconductance Amplifier. The term derives from ‘transfer conductance’ and is measured in siemens (S), where 1 siemens = 1 ampere per volt. It is represented by the symbol gm. The basic gain of vacuum tubes and FETs is expressed as transconductance. Siemens is used for singular and plural of the unit.
    An inductive electrical device for changing the voltage of alternating current, consisting of two magnetically coupled coils. Alternating current in one (called the ‘primary’) creates a changing magnetic field which induces a current in the second coil (the ‘secondary’). Multiple secondary coils can be energised from a single primary winding. There is no such thing as a DC transformer, so an isolated DC/DC converter has to convert the DC input to an AC signal for the transformer primary and then rectify the resulting AC on the transformer secondary to a DC output.
    AC/DC power supplies that are non-isolated and use switched capacitors, high voltage regulators or switching converters to generate a low voltage DC output which is directly referenced to the AC input. These may only be used where human access to the secondary connections is prevented.
    A basic term for a solid-state control device which allows or disallows current flow between two terminals, based on the voltage or current delivered to a third terminal.
    An ISO Technical Specification that aligns various automotive quality systems standards within the global automotive industry. Together with ISO 9001:2000, ISO/TS 16949:2002 specifies the quality system requirements for the design/development, production, installation and servicing of automotive related products. RECOM’s factories in Taiwan are ISO/TS 16949 certified.
    Thin Small-Outline Package
    Transistor-Transistor Logic: Logic gates implemented with bipolar transistor technology requiring a 5V±0.25V supply. Now almost universally superseded by CMOS logic.
    Transient Voltage Suppressor: A semiconductor device designed to protect a circuit from voltage transients. Typically implemented as a large silicon diode operating in avalanche mode to absorb large energy pulses quickly when the avalanche voltage is exceeded.
    A power converter topology that uses two transistors to switch each end of a transformer primary winding separately. Can be used with forward, flyback and tapped transformers.
    Transmit
    Microampere, or microamp: A millionth of an ampere. Ampere is the basic unit of electrical current.Often written as uA, but the u is a plain-text substitute for the Greek letter mu.
    Universal Asynchronous Receiver-Transmitter: An IC that converts parallel data to serial and converts received serial data to parallel data.
    A device that maintains AC power in the event of a mains failure. A UPS commonly includes a battery that is kept charged. When power fails, the battery powers an AC inverter to maintain the mains voltage for a duration defined by the capacity of the battery. This allows an orderly power-down of the system or to bridge short power outages. An off-line UPS connects the inverter only when power fails and may exhibit a short power interruption on changeover when mains fails. An on-line UPS routes power through the inverter permanently and shows no interruption on mains failure at the expense of lower operating efficiency. An on-line UPS also inherently provides protection against mains spikes and surges.
    Uniform Resource Locator: A web address.
    Universal Serial Bus (USB): A standard port that enables the connection of external devices to computers. The USB standard supports both data and power transfer. The new USB ‘Type C’ connector standard allows for 5V @ 3A (15W) up to 20V @ 5A (100W), as well as faster data transfer rates.
    Ultraviolet: The part of the electromagnetic spectrum just higher in frequency than visible light.
    Under-Voltage Lockout: A mechanism in a power converter to prevent operation if the input voltage is below a specified threshold.
    Peak-to-peak voltage.
    Volt-Ampere(s): If voltage and current are not in phase because a load has an inductive or capacitive element, then the power is measured in VA and not watts. This is because the product of the voltage and current values in a reactive circuit is higher than the power consumed. That is, real power consumed does not equal volts x amps.
    The supply voltage for a circuit is often given as V plus a double-letter suffix. The double letter is usually related to the lead of the transistors that are commonly connected to that supply, e.g. VCC is a positive-voltage supply and connects to the Collector terminal of bipolar transistors. VSS connects to the Source terminal of a FET, etc. V+ and V- are also used.
    Voltage-Controlled Oscillator: An oscillator device in which output frequency is proportional to a control voltage.
    Voice over Internet Protocol: A method for transmission of telephone calls over the Internet, e.g. Skype.
    Unit of measure for electromotive force (EMF), the electrical potential between two points. An electrical potential of 1 volt will push 1 ampere of current through a 1 ohm resistive load.
    A capacitor charge pump circuit which produces an output voltage which is twice the input voltage. A low cost, low power, non-isolated DC/DC converter.
    A circuit which is connected between a power source and a load, which provides a constant voltage despite variations in input voltage or output load. Voltage regulator is a generic term but is normally taken to imply non-isolated.
    A method of regulating a power converter output by sensing output voltage alone. See current mode control.
    Voltage Regulator Module. Another name for a switching regulators normally non-isolated DC/DC.
    Watt (W) is the unit of power. One watt is one joule of energy transferred or dissipated in one second. Electrical power is calculated as: watts = volts x amps x Power Factor Power factor can be disregarded for DC circuits or for AC circuits with a resistive load (it is unity in those situations).
    Semiconductor manufacturing begins with a thin disk of semiconductor material, called a ‘wafer’. A series of processes defines transistors and other structures, interconnected by conductors to build the desired circuit. The wafer is then sliced into 'die' which are mounted in packages, creating the semiconductor device.
    Wide Area Network: Any Internet or network that covers an area larger than a single building.
    Worldwide Interoperability for Microwave Access, a broadband, wireless access defined by the IEEE 802.16 standards. Wi-Fi (802.11) covers a small area with a radius of a few hundred meters, but WiMax (802.16) can cover up to 6 miles with only one base station.
    Circuits that transfer power using radio or inductive or capacitive coupling. Protocols include Qi, commonly used in mobile phone charging pads.
    Wireless Local Area Network
    X-Capacitors are certified for use across AC mains inputs. Y-capacitors are certified for use between AC mains and ground or in limited situations, across an isolation barrier. They are designed to self-repair after an over-voltage condition (self-healing). Y-capacitors have extra insulation as they must have at minimum ‘basic’ insulation, so are more expensive and only available in low capacitance values. Y capacitors pass leakage current so must not exceed prescribed capacitance values.
    Zero Current Switching: a mode of switch operation where it only operates when the current through the switch is zero, for minimum losses.
    A diode manufactured to have a specific reverse-breakdown voltage. Its most common use is as a voltage reference.
    Zero Insertion Force (socket): A class of IC sockets which clamp the IC pins after insertion (via a small lever on the side of the socket), and require no downward force on the IC or its pins to insert it into the socket.
    A standard for short-distance, low-data-rate, mesh (not point-to-point) communications. Created and maintained by the ZIGBEE Alliance Group.
    Zero Voltage Switching: a mode of switch operation where it only operates when the applied voltage is zero, for minimum losses.
    Prefix that is used with many inanimate things (homes, offices, phones, cities) to mean some sort of embedded intelligence and interconnectability.
    インターリーブとは、複数のコンバータを同一スイッチング周波数で位相をずらして駆動し、入出力のリップル波形を相殺する制御手法です。実効的なリップルを抑え電磁干渉(EMI)を低減するほか、出力電流を複数のコンバータに分散させ発熱損失を減らし変換効率を向上させます。
    RDS (on) とは MOSFET が完全にオン状態になった際のドレイン - ソース間抵抗を指します。この数値が低いほど導通損失が減少し、変換効率が向上します。
    クロスコンダクション(貫通電流)はハイサイドとローサイドのスイッチが同時に導通し、回路ショートを引き起こす故障現象で、素子に大きなダメージを与えます。
    グラウンドプレーンはプリント基板(PCB)上に形成された広大な導電層で、低インピーダンスな電流戻り経路を確保し、電気ノイズを低減する役割を持ちます。
    ジャンクション温度とは素子内部の半導体ダイ部分の温度を指し、信頼性に関わる重要なパラメータです。大半の半導体素子の最大ジャンクション温度は約 165℃となっていますが、この高温域で連続動作させると早期故障の原因となります。
    スイッチング周波数は、コンバータ内部の電力スイッチがオン・オフを繰り返す周期の速さです。周波数を高くするとトランスなどの磁性部品を小型化できますが、電源 IC のスイッチング損失が増加する傾向があります。
    スイッチング損失はパワー半導体がオン・オフ状態へ遷移する瞬間に発生する損失で、スイッチング周波数の上昇、またはトランジスタをソフト駆動した場合に増大します。
    フライバックスイッチオフ時に漏れインダクタンスによって発生する電圧スパイクをクランプする RC(抵抗 - コンデンサ)または RCD(抵抗 - コンデンサ - ダイオード)回路のこと。
    トランス一次巻線のちょうど中間点に設けられた引き出し端子のこと。
    ソフトスタートは起動時に出力電圧を緩やかに上昇させ、突入電流を抑制して部品への電気的ストレスを低減する機能です。
    デッドタイムはハイサイドスイッチとローサイドスイッチが同時にオンする貫通電流(クロスコンダクション)を防ぐため、トランジスタ切り替え間に挿入する遅延時間です。ゲートドライバと電源 IC の信頼性を確保する上で必須の保護機構です。
    デッドタイムとは、電力トランジスタの切り替えの間に意図的に挿入する待機時間で、各一次側半分の巻線エネルギーが完全に消滅する時間を確保します。デッドタイムを設けないと磁心に残留磁束が蓄積し、磁心飽和を引き起こす危険があります。
    デューティ比とは、1 回のスイッチング周期においてスイッチ信号がオン状態を維持する時間の割合(%)を指します。フライバックトポロジーでは出力負荷や入力電圧の変動に合わせてデューティ比を調整し、出力電圧を安定に保ちます。
    フライバック回路の補助巻線には 2 つの役割があります。起動完了後にゲートドライバへ電源を供給すること、一次側帰還制御(PSR)のため反射出力電圧を監視することです。
    ハイサイドスイッチは正極電圧レールに接続されたトランジスタで、トップスイッチとも呼ばれます。
    PWM は負荷や入力電源の変動に応じてスイッチ信号のデューティ比を調整し、出力電圧を一定に保つ制御手法です。
    パワートレインとは電源内部の主要なエネルギー変換経路を指し、一般的に一次側電源から中間電源を経て最終的な負荷点電源(POL) へ至る経路を意味します。パワートレインにより、分散電源アーキテクチャの各段階において高効率かつ適切な動作特性を実現できます。
    フライバック回路はギャップ付きトランスの磁気ギャップにエネルギーを蓄積し、一次側遮断時に蓄積エネルギーを出力側に放出する方式です。通常のトランスの電力伝達原理ではなく、結合インダクタとして動作します。
    フルブリッジ回路は 4 つのスイッチを H 字型に配置し、各周期ごとにトランスへの印加電圧極性を反転させる構成です。この H ブリッジ構成は大電力 DC/DC コンバータに採用され、電力密度と変換効率を最大化します。
    プッシュプル回路は 2 つのスイッチが交互に導通し、センタータップ付きトランスに電流を流す回路構成です。
    ホールドアップタイムとは入力電源遮断後も電源装置が出力電圧を規定範囲内に維持する持続時間のことです。交流商用電源の瞬断周期が出力電圧ラインに影響を及ぼさないようにするため、AC/DC 電源において重要な仕様です。
    ボディダイオードは MOSFET 素子構造に内蔵される固有のダイオードで、素子に逆バイアスがかかった時に電流を通電します。
    リップルとは電源コンバータのスイッチング動作により生じる出力電圧の周期的残留変動(電圧リップル)、または入力電流の変動(入力リップル)を指します。フィルタの追加、動作周波数や動作モードの変更(インターリーブ方式など)によりリップルを低減可能です。
    ループ面積とは電流経路が囲む物理的な面積のことです。面積が大きくなるほど電磁放射が増加し、ノイズの影響を受けやすくなります。
    ローサイドスイッチはグラウンドラインに接続されたトランジスタで、ボトムスイッチとも呼ばれます。
    一次側帰還制御は補助巻線の波形を抵抗分圧回路で分圧し監視する方式で、分圧比はトランス巻線比と逆数の関係になります。スイッチ周期内で出力電流がゼロになる屈曲点(ニー点)で波形をサンプリングすると、サンプリング電圧=出力電圧+出力整流ダイオード降下電圧(Vout+Vf)となるため、一次側の波形のみで出力電圧を制御可能です。フォトカプラが不要なため二次側帰還(SSR)より低コストで信頼性が高い一方、過渡応答速度は低速となります。
    次のスイッチ周期が始まる前に磁心に蓄積されたエネルギーがゼロになる動作モードです。電磁適合性(EMC)と過渡応答特性に優れる反面、リップル電流が大きくなる特徴があります。
    二次側帰還制御はシャントレギュレータでフォトカプラ内の LED を駆動し、一次側コントローラに帰還信号を送ることで出力電圧または電流を一定に保ちます。PSR と比較して制御精度が高く過渡応答も速い反面、部品コストが上昇し信頼性は低下します。
    伝導ノイズは電源線や信号線を通じて伝搬する不要な電気的ノイズを指します。
    入力電圧範囲とは、コンバータが正常動作可能な最低・最高供給電圧の幅を規定したものです。大半のコンバータは一時的な過渡的低電圧・過電圧に対して素子損傷なく耐えますが、閾値を超えた状態で長時間動作させると早期故障や誤動作を引き起こします。
    分散電源アーキテクチャ(DPA)では AC/DC コンバータを用いて集中型の中間電圧レール(24V または 5V が一般的)を生成し、絶縁型 DC/DC コンバータ と非絶縁型負荷点スイッチングレギュレータに給電することで、機器に必要な全ての電圧ラインを供給します。DPA は電源システム設計の柔軟性と拡張性を大幅に高め、電力密度・変換効率・信頼性を向上させます。
    励磁インダクタンスはトランス一次巻線に由来するインダクタンスを指し、出力巻線を開放した状態で測定します。
    同期整流では従来のダイオードに代えて能動制御型 MOSFET を使用し、電圧降下を低減し変換効率を高めます。ダイオード整流と同等の動作を実現するため、ゲートドライバにより交流周期の適切なタイミングでトランジスタのオンオフを精密に制御する必要があります。
    PFM は負荷状況に応じてスイッチング周波数を可変させる制御方式で、軽負荷時の変換効率を高く維持します。電力消費の少ない動作域でスイッチング損失を低減し、電力密度の最適化を実現します。
    導通損失は電流が半導体素子の RDS (on) 抵抗を通過する際に消費される電力損失のことです。
    抵抗分圧帰還制御は出力電圧を直接(非絶縁)帰還して出力電圧・電流を安定化させる方式です。トランス巻線比は入出力電圧範囲の設定のみに使用されます。
    放射ノイズとは、電子回路が意図せず空間放射によって放出する電磁エネルギーのことです。
    放熱パッドは半導体パッケージに露出した金属面で、内部ジャンクションからプリント基板(PCB)への熱伝導を向上させます。
    漏れインダクタンスとは一次巻線と二次巻線の間で鎖交しない浮遊磁束によるインダクタンスのことで、プッシュプル・フルブリッジ・フライバック回路においてエネルギー損失や電圧スパイクを引き起こします。電磁適合性(EMC)を悪化させる要因となる一方、共振型回路では磁気エネルギーを蓄積するために一定の漏れインダクタンスが必要不可欠となります。
    熱ビアは PCB に設けられたメッキスルーホールで、発熱部品から基板内層または裏面銅箔層へ熱を伝導させる役割があります。
    熱抵抗は 2 点間の熱の伝わりにくさを表す指標で、単位は一般的に℃/W で表記されます。
    熱拡散とは、広範囲かつ厚みのある PCB 銅箔全体に熱エネルギーを分散させ、局所的な過熱を回避する手法のことです。
    磁心飽和とは磁心がそれ以上磁束を保持できなくなる状態のことで、インダクタンスが急激に低下し、大きな電流スパイクが発生します。
    磁心はトランスやインダクタ内の磁束を集束させ、変換効率を向上させると同時に小型設計を実現します。
    磁束密度は磁心内部の磁界の強さを表す指標で、単位はテスラ(T)が一般的に使用されます。
    磁心に設けられた磁気ギャップは磁心飽和を抑制し、フライバック回路においてインダクタ・トランスに磁気エネルギーを蓄積する役割を持ちます。
    統合パワーステージは、ゲートドライバと電力スイッチングトランジスタを 1 つのデバイスに集積した部品です。基板(PCB)の実装面積を削減し、レイアウト設計を簡素化するとともに、電力変換システムにおけるスイッチング周波数の性能を向上させます。
    表皮効果により交流電流が導体表面付近に偏って流れ、スイッチング周波数が高くなるほど実効抵抗が上昇します。
    補償回路網はスイッチングレギュレータの制御ループを安定化させ、予測可能な過渡応答を確保し発振を防止します。
    負荷点(POL)コンバータは大出力電流・低出力電圧対応のスイッチングレギュレータで、電力消費部品の直近に実装することで電力損失を抑え、電磁適合性(EMC)の課題を低減すると同時に、出力電圧精度と過渡応答特性を改善します。
    起動時間とは電源投入後、コンバータの出力電圧が規定値に安定するまでに要する時間を指します。
    周期全体を通して磁心に常にエネルギーが残留する動作モードです。DC/DC コンバータにおいてリップル電流を低く抑えるための基本的な動作方式ですが、DCM とは電磁適合性の特性が異なります。
    過渡応答とは負荷または入力電圧の急激な変動に対し、電源装置がどれだけ速く・高精度に反応し出力を安定状態に戻すかを示す指標です。段階的な電圧変化に対する復帰時間、または出力電圧の最大変動幅で表記されます。
    電力密度とは、単位体積あたりに出力可能な電力の量を示す指標で、単位は一般的に W/cm³ または W/in³ で表記されます。
    電圧レールとは、システム内に配線された専用の供給電圧ラインのことで、特定の電源 IC 回路またはサブシステムへ電力を供給するために使用されます。
    電源シーケンス制御とは、複数の電圧レールの起動・遮断順序を規定した制御方式であり、複雑な電子システムまたは電源 IC ユニットが正常に起動・停止するよう保証します。
    電磁適合性(EMC)とは、電子機器が許容範囲を超える電磁干渉を発生させず、また外部からの干渉による悪影響を受けず正常に動作する能力を指します。電磁適合性(EMC)とは、電子機器が許容範囲を超える電磁干渉を発生させず、また外部からの干渉による悪影響を受けず正常に動作する能力を指します。

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