Analysis of Conduction Losses for Zero-Current-Switching Quasi-Resonant Buck Converter

摘要

A conduction power loss evaluation method which is important in design of quasi-resonant buck converter operating at zero-current-switching (ZCS) is observed in this paper. A new approach to conduction loss evaluation for wide operation range and voltage ZCS-converters is proposed. It allowed understanding fundamental difference between switch networks conduction losses with PWM, half-wave and full-wave ZCS modes of operation. The main statements are confirmed by experimental results quoted in the paper.