Interleaved zero current transition buck converter

This paper introduces interleaved zero current transition (ZCT) converters where two sets of switches are operating out of phase and share the load power equally. Turn-on transitions at zero current and a significant reduction of the losses associated with diode reverse recovery are accomplished through addition of two small inductors. The paper describes a 30 kW (300 V, 100 A) interleaved ZCT buck converter operating at 32 kHz switching frequency. Losses and efficiency of the experimental prototype compare favorably against the standard hard-switched buck converter, and against previously proposed ZCT approaches.