대한전기학회논문지:전기기기및에너지변환시스템부문B (The Transactions of the Korean Institute of Electrical Engineers B)

대한전기학회 (The Korean Institute of Electrical Engineers)
권호 표지

전압 전류 혼합구동방식을 적용한 동기정류기형 플라이백 DC-DC 컨버터

A Flyback DC-DC Converter Employing a Synchronous Rectifier Driven by a New Voltage/Current Mixed Method

  • 이달우 (청주대학교 전자공학과) ;
  • 안태영 (청주대학교 전자공학과)
  • 발행 : 2006.09.01
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초록

This paper presents a new voltage/current mixed method for driving synchronous rectifiers (SR) adapted to the flyback topology. The synchronous rectifier driven by the proposed voltage/current mixed method can operate at a wide load range with high efficiency. The gate voltage of MOSFET in the synchronous rectifier can be easily controlled by changing the ratio of resistors, irrespective of a line and load fluctuation. A 200W (12V/17A) prototype converter was built and an efficiency of 93% was measured at 10A load current.

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참고문헌

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  2. Xuefei Xie, Joe Chui Pong Liu, Franki Ngai Kit Poon, Man Hay Pong 'A Novel High Frequency Current-Driven Synchronous Rectifier Applicable to Most Switching Topology' IEEE Transactions on Power Electronics, Vol. 16, pp .635-648, Vol. 16, no. 5, September 2001 https://doi.org/10.1109/63.949496
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  5. Jonel Dan Jitaru, 'High Efficiency Flyback Converter using Synchronous Rectification' IEEE APEC 2002, pp. 867 - 871 https://doi.org/10.1109/APEC.2002.989345