Transformer parasitic inductor component-assisted soft-commutation DC-DC converter with rectifier side active power switching control scheme

This paper presents a new prototype of phase-shifted ZVS-PWM DC-DC converter with choke input type smoothing filter which has two active power switches in rectifier side. The wide ZVS area at primary side and ZCS area at secondary side by using the parasitic inductor component of a high-frequency transformer can be achieved by this converter. Its operation principle and features are explained and compared with those of the previously-developed ZVS-PWM DC-DC converter. The steady-state operating characteristics of the proposed converter topology are illustrated and discussed on the basis of the simulation results and experimental ones. Finally, another converter with capacitor input type smoothing filter which operates under a principle of this converter is explained herein