Abstract
This paper presents a soft switching PWM non-isolated boost DC-DC converter embedding an edge-resonant switched capacitor (ER-SWC) modular. The DC-DC converter treated here can achieve a high frequency ZCS turn-on and ZVS turn-off operations in active switches and minimization of a reverse recovering current in the freewheeling diode under DCM including CRM operation of the input DC current. In this paper, the soft switching operating range is described in connection with the output power range as well as the practical design procedure for the circuit parameters.For demonstrating the soft switching operations in detail, a 1[kW]-44[kHz] laboratory prototype designed in accordance with the guideline is evaluated by experiments, then actual performances of the proposed DC-DC converter are discussed from the practical point of view.
