A Passive Lossless Snubber Cell With Minimum Stress and Wide Soft-Switching Range
作者： River T H Li , Henry Shu-hung Chung
DOI: 10.1109/TPEL.2010.2042074
关键词:
摘要: A passive lossless snubber cell and its dual structure for reducing the switching loss of a range converters are presented. The proposed has several advantages over existing snubbering techniques. First, it provides zero-current-switching zero-voltage-switching conditions turning on off, respectively, switch wide load range. Second, does not introduce extra voltage stress switch. Third, by taking ripple current through into account, peak during resonance period is designed to be less than without snubber. Hence, operating principle, procedure designing values components, soft-switching will given. connections cells different illustrated. performance comparison among prior-art addressed. been successfully applied an example 200-W, 380-V/24-V, 100-kHz two-switch flyback converter. Experimental results in good agreement with theoretical predictions.
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