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Single-stage half-bridge converter using a coupled-inductor

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4 Author(s)
J. -M. Kwon ; Dept. of Electron. & Electr. Eng., Pohang Univ. of Sci. & Technol., South Korea ; W. -Y. Choi ; H. -L. Do ; B. -H. Kwon

A single-stage half-bridge flyback converter with high power factor and high efficiency is proposed. A half-bridge flyback converter is coupled to the line voltage for power factor correction (PFC) and driven in complementary control for zero-voltage switching. The proposed PFC can achieve almost unity power factor and ripple-free input current using a coupled inductor. The half-bridge DC-DC converter is analysed and optimised for high power efficiency. Experimental results for a 200 W converter at a constant switching frequency of 100 kHz are obtained to show the performance of the proposed converter.

Published in:

IEE Proceedings - Electric Power Applications  (Volume:152 ,  Issue: 3 )