2Jung- Coo Cho,Ju- Won Baek, Chang- Yong Jeong,et al. Novel Zero- Voltage and Zero- Current- Switching Full- Bridge PWM Convertex Using a Simple Auxiliary Circuit[J]. IEEE Transactions on Industry Applications, 1999,35 (1) :15 - 20.
3Jung- Coo Cho,Chang- Yong Jeong,Fred C Y Lee.Novel Zero- Voltage Zero- Current- Switching Full - Bridge PWM Converter Using Secondary Active Clamp[J]. IEEE. Transactions on Power Electronics, 1998,13(40) :601 - 607.