Lossless passive snubber for half bridge interleaved flyback converter

摘要: Discontinues output current of regular flyback converter will cause several problems such as large volume capacitor and also high voltage noise. Interleaved structure can reduce ripple process more power compared with single-phase converter. Normally, reducing the weight size a is an important goal while designing. An efficient way to thus increasing density switching frequency. However, in this way, losses increases. A half bridge interleaved clamp circuit introduced improved passive lossless snubber circuit. In structure, stored energy parasitic elements absorbed by at turn off instant provide soft condition for all semiconductor elements. The proposed load independent which characteristic. addition, 500 W prototype implemented improve efficiency than 6%.