Proceedings of the KIEE Conference (대한전기학회:학술대회논문집)

The Korean Institute of Electrical Engineers (대한전기학회)
권호 표지

CM Forward ZVS-MRC with Synchronous Rectifier

동기 정류기를 이용한 클램프 모드 포워드 영전압 스위칭 다중 공진형 컨버터

  • Ahn, Kang-Soon (Power Electronics Control Lab. Dept. of Mechatronics, Hanyang Univ.) ;
  • Kim, Hee-Jun (Power Electronics Control Lab. Dept. of Electrical Engineering Hanyang Univ.)
  • 안강순 (한양대학교 기전공학과 전력전자제어 연구실) ;
  • 김희준 (한양대학교 전기공학과 전력전자제어 연구실)
  • Published : 1996.07.22
Download PDF
⟨ Previous Next ⟩

Abstract

The Clamp Mode(CM) Forward Zero Voltage Switching Multi Resonant Converter(ZVS-MRC) with self-driven synchronous rectifier in studied. The loss at the synchronous rectification stage of the converter is analyzed using MOSFET linear model and is compared with the loss at the conventional schottky diode rectification stage of the converter. From the results of the analysis, it is known that the use of MOSFETs as a synchronous rectifier reduces the loss at the rectification stage over the whole load range comparing the use of schottky diodes as a conventional rectifier in the converter. In order to verify the validity of the analysis, we have built a 33W(3.3V/10A) CM Forward ZVS-MRC with self-driven synchronous rectifier, in which switching frequency is 1MHz, and tested. From the experimental results, it is known that the synchronous rectification achieved about 1W improvement in the loss at the rectification stage and about 3% in the efficiency at the converter as compared with the conventional schottky diode rectification.

Keywords