KIEE - The Transactions of the Korean Institute of Electrical Engineers

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The Transactions of the Korean Institute of Electrical Engineers

The Transactions of the Korean Institute of Electrical Engineers

ISO Journal TitleTrans. Korean. Inst. Elect. Eng.

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Title	A Flyback DC-DC Converter Employing a Synchronous Rectifier Driven by a New Voltage/Current Mixed Method
Authors	이달우(Lee, Darl-Woo) ; 안태영(Ahn, Tae-Young)
Page	pp.472-477
ISSN	1975-8359
Keywords	Synchronous Rectifier ; Voltage Current Driven ; Flyback Converter
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.

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