Compact size regulated DC/DC converters

Two of the most popular formats for low power and medium power regulated DC/DC converters are the 8-pin Single-Inline-Pin (SIP8) and 1”x1” case sizes. The SIP8 format includes output powers from 1W up to 12W, while the 1”x1” includes output powers from 8W up to 30W. Both regulated compact power supplies have input/output isolation, enable pins, wide input voltage ranges, wide operating temperatures and short-circuit protected outputs, making them suitable for a variety of industrial, test and measurement and battery operated equipment.

Table of contents

SIP8

The SIP8 format has been a widely accepted pinout and case style for well over a decade, offering a plug-in industrial standard across many input voltages and output voltage combinations including single or dual outputs. Due to its popularity, many different manufacturers offer interchangeable products, so second sourcing is not a problem, although RECOM is the only manufacturer able to offer up to 12W in the SIP8 format. Tightly regulated outputs, wide 2:1 or 4:1 input voltage ranges, external control pin and 1kV, 2kV or 3kV isolation round off the specifications of this versatile converter style. Recom also offers “E” economy versions for especially cost-sensitive applications.
  Series Power (W) Vin (V) Main Vout (V) Isolation (kV) Mounting Type Package Style
1 DC/DC, 12 W, Single Output, THT RS12-Z Series
Focus
12 9 - 36, 18 - 75 10.8 to 13.2, 13.5 to 16.5, 2.97 to 3.63, 21.6 to 26.4, 4.5 to 5.5 3 THT SIP8
2 DC/DC, 3 W, Single Output, THT RS3E Series
Focus
3 4.5 - 9, 9 - 18, 18 - 36, 36 - 72 12, 15, 24, 3.3, 5, 9 3 THT SIP8
3 DC/DC, 3 W, THT RS3K Series
Focus New
3 4.5 - 9, 9 - 36 12, 15, 24, 3.3, 5, 9, ± 12, ± 15, ± 24, ± 5 3 THT SIP8
4 DC/DC, 2 W, Single Output, THT RSE Series
Focus
2 4.5 - 9, 18 - 36 5 2 THT SIP8
5 DC/DC, 2 W, Single Output, THT RSE-Z Series
Focus
2 4.5 - 18, 9 - 36 5 2 THT SIP8
6 DC/DC, 2 W, Single Output, THT RSK-RUW Series
Focus New
2 4.5 - 36 3.3 to 17, 5 3 THT SIP8
7 DC/DC, 1 W, Single Output, THT RSOE Series
Focus
1 4.5 - 9, 18 - 36 5 2 THT SIP8
8 DC/DC, 1 W, Single Output, THT RSOE-Z Series
Focus
1 4.5 - 18, 9 - 36 5 2 THT SIP8
9 DC/DC, 1 W, Single Output, THT RSOK-Z Series
Focus New
1 9 - 36 3.3 to 17, 5 3 THT SIP8
10 DC/DC, 2 W, THT RS Series
2 4.5 - 9, 9 - 18, 18 - 36, 36 - 72 12, 15, 3.3, 5, 9, ± 12, ± 15, ± 3.3, ± 5, ± 9 1, 2, 3 THT SIP8
11 DC/DC, 3 W, THT RS3 Series
3 4.5 - 9, 9 - 18, 18 - 36, 36 - 72 12, 15, 3.3, 5, 9, ± 12, ± 15, ± 3.3, ± 5, ± 9 1, 2, 3 THT SIP8
12 DC/DC, 6 W, THT RS6 Series
6 4.5 - 9, 9 - 18, 18 - 36, 36 - 75 11.04 to 13.2, 13.8 to 16.5, 3.036 to 3.63, 4.6 to 5.5, ± 12, ± 15, ± 5 2 THT SIP8
13 DC/DC, 1 W, THT RSO Series
1 4.5 - 9, 9 - 18, 18 - 36, 36 - 72 12, 15, 3.3, 5, 9, ± 12, ± 15, ± 3.3, ± 5, ± 9 1, 2, 3 THT SIP8
14 DC/DC, 1 W, THT RSO-Z Series
1 4.5 - 18, 9 - 36, 18 - 72 12, 15, 3.3, 5, 9, ± 12, ± 15, ± 3.3, ± 5, ± 9 1, 2, 3 THT SIP8

1” x 1”

The one-inch-by-one-inch case style originated in the telecoms industry which required a compact, isolated DC/DC converter with higher power and a metal case that could be mounted to a heatsink to improve the operating temperature range. The pinout is also a de facto standard, with five pins (or six pins with the addition of a control pin) that are arranged to fit onto a 0.1” grid. The baseplate contains a conductive layer to form a full six-sided shielded design for low EMI, important then for telecoms applications, but now increasingly important for complex industrial controllers, embedded systems and other applications requiring more power.
  Series Power (W) Vin (V) Main Vout (V) Isolation (kV) Mounting Type Package Style
1 DC/DC, 30 W, THT REC30E-Z Series
Focus
30 9 - 36, 18 - 75 10.8 to 13.2, 13.5 to 16.5, 2.97 to 3.63, 21.6 to 26.4, 4.5 to 5.5, ± 12, ± 15 2 THT 1"x1"
2 DC/DC, 20 W, THT RPA20-AW Series
Focus
20 9 - 36 10.8 to 13.2, 13.5 to 16.5, 2.97 to 3.63, 4.5 to 5.5, ± 12, ± 15 1.6 THT 1"x1"
3 DC/DC, 30 W, THT RPA30-AW Series
Focus
30 9 - 36 10.8 to 13.2, 13.5 to 16.5, 2.97 to 3.63, 4.5 to 5.5, ± 12, ± 15 1.6 THT 1"x1"
4 DC/DC, 10 W, THT RP10-A Series
10 9 - 18, 18 - 36, 36 - 75 10.8 to 13.2, 13.5 to 18, 2.97 to 3.63, 21.6 to 28.8, 4.5 to 6, ± 12, ± 15, ± 5 1.6 THT 1"x1"
5 DC/DC, 10 W, THT RP10-AW Series
10 9 - 36, 18 - 75 10.8 to 13.2, 13.5 to 18, 2.97 to 3.63, 21.6 to 28.8, 4.5 to 6, ± 12, ± 15, ± 5 1.6 THT 1"x1"
6 DC/DC, 12 W, THT RP12-AR Series
12 36 - 160 10.8 to 13.2, 13.5 to 18, 2.97 to 3.63, 21.6 to 28.8, 4.5 to 5.5, ± 12, ± 15, ± 24 3 THT 1"x1"
7 DC/DC, 15 W, THT RP15-A Series
15 9 - 18, 18 - 36, 36 - 75 10.8 to 13.2, 12, 13.5 to 16.5, 15, 2.97 to 3.63, 3.3, 4.5 to 5.5, 5, ± 12, ± 15, ± 5 1.6 THT 1"x1"
8 DC/DC, 15 W, THT RP15-AW Series
15 9 - 36, 18 - 75 10.8 to 13.2, 12, 13.5 to 16.5, 15, 2.97 to 3.63, 3.3, 4.5 to 5.5, 5, ± 12, ± 15, ± 5 1.6 THT 1"x1"
9 DC/DC, 20 W, THT RP20-A Series
20 9 - 18, 18 - 36, 36 - 75 10.8 to 13.2, 12, 13.5 to 16.5, 15, 2.97 to 3.63, 3.3, 4.5 to 5.5, 5, ± 12, ± 15 1.6 THT 1"x1"
10 DC/DC, 20 W, THT RP20-AW Series
20 9 - 36, 18 - 75 10.8 to 13.2, 12, 13.5 to 16.5, 15, 2.97 to 3.63, 3.3, 4.5 to 5.5, 5, ± 12, ± 15 1.6 THT 1"x1"

SMD Low Power

The RxM series offers 1W, 2W, 3W or 5W options, all with 4:1 inputs, single or dual isolated and regulated outputs and a wide operating temperature range. These compact SMD-mount converters are ideal for industrial control, test and measurement, and automation applications, but will find many other uses where a tightly regulated, short-circuit proof board-level power supply is needed.
  Series Power (W) Vin (V) Main Vout (V) Isolation (kV) Mounting Type Package Style
1 DC/DC, 1 W, SMD R1M Series
Focus
1 4.5 - 18, 9 - 36, 18 - 75 12, 15, 24, 3.3, 5, 9, ± 12, ± 15, ± 5 1.6 SMD SMD 8 Pin
2 DC/DC, 2 W R2M Series
Focus
2 4.5 - 18, 9 - 36, 18 - 75 12, 15, 24, 3.3, 5, 9, ± 12, ± 15, ± 5 1.6 THT, SMD DIP8, SMD 8 Pin
3 DC/DC, 3 W, SMD R3M Series
Focus
3 4.5 - 18, 9 - 36, 18 - 75 12, 15, 24, 3.3, 5, 9, ± 12, ± 15, ± 5 1.6 SMD SMD 8 Pin
4 DC/DC, 5 W, SMD R5M Series
Focus
5 9 - 36, 18 - 75 12, 15, 24, 3.3, 5, 9, ± 12, ± 15, ± 5 1.6 SMD SMD 8 Pin

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