An improved scheme for high-efficiency push-pull converter using single winding self-driven synchronous rectification

Author

Kim, Lee-Hun ; Chun, Kwang-Su ; Won, Chung-Yuen ; Kim, Soo-seok ; Choi, Se-Wan

Author_Institution

Inf. & Commun. Eng., Sung Kyun Kwan Univ., South Korea

Volume

2

fYear

2004

fDate

2-6 Nov. 2004

Firstpage

999

Abstract

This paper presents a method of synchronous rectifier (SR) for improving the efficiency in DC/DC converter. The proposed method is used push-pull topology on each half primary as a single winding self-driven synchronous rectification (SWSDSK). Specially, this method can improve efficiency to let SR switch turn on during dead time. Based on the novel design scheme for auxiliary winding in the power transformer, The SR´s MOSFET is turn on fully even when the voltage in the transformer is zero. For verification, there are analyzed and compared improved single winding self-driven synchronous rectification (ISDSR) with various conventional SR topology.

Keywords

DC-DC power convertors; power MOSFET; power transformers; rectification; rectifying circuits; transformer windings; DC/DC converter; MOSFET; auxiliary winding; improved single winding self-driven synchronous rectification; power transformer; push-pull converter; single winding self-driven synchronous rectification; synchronous rectifier; Diodes; Low voltage; MOSFET circuits; Power MOSFET; Power transformers; Rectifiers; Strontium; Switches; Topology; Zero voltage switching;

fLanguage

English

Publisher

ieee

Conference_Titel

Industrial Electronics Society, 2004. IECON 2004. 30th Annual Conference of IEEE

Print_ISBN

0-7803-8730-9

Type

conf

DOI

10.1109/IECON.2004.1431710

Filename

1431710