A continuous current mode boost converter with modified flying capacitor lossless snubber

Abstract

A continuous current mode boost converter with modified flying capacitor lossless snubber is proposed in this paper. The proposed converter charges the flying capacitor using a coupled inductor without the help of the reverse recovery current. As a result, it can reduce switching loss and guarantee the wide snubber reset ranges. The operation principle, characteristics, and experimental results are presented to verify the feasibility of the proposed converter.Index Terms-Boost converter, flying capacitor passive lossless snubber, coupled inductor, wide snubber reset ranges.978-1-4244-5287-3/10/$26.00 ©2010 IEEE