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

The Korean Institute of Electrical Engineers (대한전기학회)
권호 표지

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

전압 전류 혼합구동방식을 적용한 동기정류기형 플라이백 DC-DC 컨버터

  • 이달우 (청주대학교 전자공학과) ;
  • 안태영 (청주대학교 전자공학과)
  • Published : 2006.09.01
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Abstract

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.

Keywords

References

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