Title :
ZVS-PWM flyback converter with a simple auxiliary circuit
Author :
Wang, C.-M. ; Su, C.-H. ; Yang, C.-H.
Abstract :
A novel zero-voltage-switching (ZVS) pulse-width-modulated flyback dc/dc converter with a simple auxiliary circuit is proposed. The auxiliary circuit is configured in the presented ZVS-PWM flyback converter to perform soft-switching in the semiconductor devices and soft commutation of the main switches without additional current stress. Eight transition states for describing the behaviour of the ZVS-PWM flyback converter in one switching period are described. A prototype rated at 150W, operating 80kHz has been implemented in laboratory. Analysis, design, and the control circuitry are also presented.
Keywords :
DC-DC power convertors; PWM power convertors; commutation; power semiconductor switches; switching convertors; zero voltage switching; 150 W; 80 kHz; DC-DC converter; ZVS-PWM flyback converter; auxiliary circuit; control circuitry; semiconductor device; soft commutation; soft-switching; transition state; zero-voltage-switching;
Journal_Title :
Electric Power Applications, IEE Proceedings -
DOI :
10.1049/ip-epa:20050123
