The simplest (functional) isolation of a
DC/DC converter can withstand 1kVDC for one second, however this is often not sufficient for high-side gate drivers. RECOM combines the required high insulation voltage, asymmetric output voltages, and low isolation capacitance into one simple DC/DC module.
High side inverters are often floated a few hundred volts with an opto-isolated PWM control, so the
gate drivers need an isolated power supply. This isolated supply is typically +15/-9V for IGBT, +20/-5V for SiC (+15/-3V for 2nd Gen. devices) or +6V and +9V for GaN. A typical DC/DC isolation voltage would be at least twice the working voltage, but the high ambient temperature and fast switching edges generated by these high-power transistors additionally stress the insulation barrier. Whether
IGBT, SiC MOSFET or
GaN HEMT, RECOM has the matching DC/DC converter module, featuring the required asymmetric output voltages, high insulation voltage and low isolation capacitance. The
R-REF01-HB reference design can be used to compare the real-life performance of various high power switching technologies.
