Proceedings of the KIPE Conference (전력전자학회:학술대회논문집)

The Korean Institute of Power Electronics (전력전자학회)
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A study on the 200W class QR flyback DC-DC converter with synchronous rectifier

동기정류기를 이용한 200W급 공진형 플라이백 DC-DC 컨버터에 관한 연구

  • Won, Ki-Sik (Dept. of Electronics Eng., Cheongju University) ;
  • Ahn, Tae-Young (Dept. of Electronics Eng., Cheongju University)
  • 원기식 (청주대학교 전자공학과) ;
  • 안태영 (청주대학교 전자공학과)
  • Published : 2005.07.04
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Abstract

This paper presents a novel current driving method for the synchronous rectifier (SR) in a Flyback topology. The proposed current driven synchronous rectifier features low Power loss, good performance and the gate voltage of FET in the synchronous rectifier is easily controlled by zener voltage. The proposed SR driving method is implemented in a 200W Flyback converter with 400Vdc input and achieved excellent performance at full load.

Keywords