Automotive InnoSwitch3™

InnoSwitch3 High-Voltage Switcher ICs Certified for Automotive Use


  • AEC-Q100 qualified
  • Up to 90% efficient across full load range
  • Lowest component count PSU implementation
  • Smallest PCB area

The AEC-Q100-qualified InnoSwitch™3 is a flyback switcher with integrated 750 V MOSFET and secondary-side sensing. The device family targets automotive EV applications, such as traction inverter, OBC (on-board charger), EMS (energy management DC/DC bus converters) and BMS (battery management systems).  This devices achieves ±3% accuracy for combined line and load regulation while eliminating isolated transformer sense-windings and optocouplers. The on-chip synchronous rectifier controller delivers over 90% efficiency at the nominal 400 VDC input voltage.



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  • Accurate regulation of better than +/-3%
  • 30 VDC to 550 VDC input voltage (up to 925 VDC with StackFET)
  • Integrated FluxLink™ feedback
  • Digitally controlled via the I2C interface
  • Traction Inverter
  • On-Board Charger (OBC)
  • Energy Management System (EMS)
  • Battery Management System (BMS)
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