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A Soft-Switching SEPIC with Multi-Output Sources

Department of Electrical Engineering, National Chin-Yi University of Technology, Taichung 41170, Taiwan
Department of Electronic Engineering, National Chin-Yi University of Technology, Taichung 41170, Taiwan
Author to whom correspondence should be addressed.
Academic Editor: Mostafa Bassiouni
Electronics 2017, 6(2), 35;
Received: 2 March 2017 / Revised: 18 April 2017 / Accepted: 3 May 2017 / Published: 6 May 2017
PDF [4352 KB, uploaded 6 May 2017]


In this paper, a soft-switching single-ended-primary-inductance converter (SEPIC) with multi-output sources is proposed. The proposed SEPIC has the following advantages: (1) The conversion efficiency can be increased. To incorporate a soft-switching cell with a flyback-type, the power switches can achieve zero-voltage-switching (ZVS) and zero-current-switching (ZCS) features under turn-on transitions, resulting in reducing the switching losses and electromagnetic interference (EMI); (2) The applicability can be maximized. To apply the voltage ratio of the transformers, the proposed SEPIC has multi-output sources with step-up/down voltage functions. Finally, a prototype of the soft-switching SEPIC with multi-output sources is built and implemented. Simulated and experimental results are presented to verify the performance and the feasibility of the proposed soft-switching SEPIC with multi-output sources. View Full-Text
Keywords: soft-switching; SEPIC; ZVS; ZCS; EMI soft-switching; SEPIC; ZVS; ZCS; EMI

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Tsai, C.-T.; Su, J.-C. A Soft-Switching SEPIC with Multi-Output Sources. Electronics 2017, 6, 35.

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