The Transactions of the Korean Institute of Power Electronics (전력전자학회논문지)

The Korean Institute of Power Electronics (전력전자학회)
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A Zero-Current-Transition Synchronous Buck Converter Using Auxiliary Circuit with Soft-Switching

소프트 스위칭 방식의 보조 회로를 활용한 영전류 천이형 싱크로너스 벅 컨버터

  • Lee, Eui-Cheon (Dept. of Electronic & Telecommunication Engineering, Inje University) ;
  • Choi, Hyun-Chil (Dept. of Electronic Engineering, Inje University)
  • Received : 2013.01.21
  • Accepted : 2013.04.12
  • Published : 2013.08.20
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Abstract

This paper proposes a zero-current-transition(ZCT) synchronous buck converter using auxiliary circuit with soft-switching for light weight and high efficiency. In this scheme, an auxiliary circuit is added to the conventional synchronous rectifier buck converter and used to achieve soft-switching condition for both the main switch and synchronous switch. In addition, the switch in the auxiliary circuit operates under soft-switching conditions. Thus, the proposed converter provides a higher efficiency. The basic operations, in this paper, are discussed and design guidelines are presented. The usefulness of the proposed converter is verified on a 200KHz, 20 W prototype converter.

Keywords

References

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