Family of Soft Switching Quasi-Resonant Interleaved Converters

This article introduces a family of soft switching (SS) interleaved DC-DC converters. In the proposed topologies, full SS performance is realized with no extra switches and by using a few passive elements. The introduced converters utilize quasi-resonant SS method which absorbs and uses the parasitic components to provide full SS condition. These issues enhance the efficiency and reduce the converter overall size and cost, considerably. In the proposed converters, the switches turn on and off at zero voltage switching and the diodes turn off under zero current switching conditions. This alleviates the MOSFETs switching and capacitive turn-on dissipations and the diodes reverse recovery problem. The operation principles of the boost type of the introduced family are presented completely. Also, the experimental results are presented which validate the theoretical analysis. Also, a comparison between the proposed converter and the recent prominent counterparts is presented.