70 W flyback power supply for 400 V DC BEV automotive applications as
a replacement for the 12 V lead-acid auxiliary battery, using
InnoSwitch3-AQ with 1700 V SiC switch

• Ultra-compact design, 30 mm low profile, only 66 components with a single 1700 V power switch

• Full load operation from 190 VDC to 450 VDC input, 14 V / 5 A output

• Reinforced 450 V isolated transformer (IEC-60664-1 and IEC-60664-4 compliant)

• ≥94% full load efficiency across the input voltage range

• Ambient operating temperature from -40 °C to 85 °C

• Uses automotive-qualified AEC-Q surface mounted components