Analysis and design of a novel fixed-frequency buck-boost zero-current zero-voltage switched converter

A novel buck-boost ZC-ZVS converter regulated by PWM-control technique is proposed. Soft switching commutation is achieved for all active devices, and consequently the power losses and electromagnetic interference (EMI) arc considerably reduced. The proposed converter can be used for low-EM1 applications using IGBTs or MOSFETs. The principles of operation, theoretical analysis and experimental results are provided to verify the performance of the proposed converter.