Use of IGT/COMFET in zero current quasi resonant converters

Abstract

The problems associated with IGT/COMFET devices in PWM converters, such as turn off current tailing and latching are largely avoided in a resonant converter. Dynamic saturation loss is identified as the predominant power loss in IGT/COMFET devices for very high frequency resonant operation. Device design change is suggested for very high frequency resonant operation applications.