5FINNEY S J, WILLIAMS B W, GREEN T C. The RCD Snubber Revisited[J]. IEEE Trans on Industry Applications, 1996,32 (1):155 -160.
6ELASSER A, TORRY D A. Soft Switching Active Snubbers for DC/DC Converters[ J ]. IEEE Trans on Power Electronics,1996, 11(11) :710-722.
7NINOMIYA T, TANAKA T, HARADAK. Analysis and Optimization of a Nondissipative LC Turn -off Snubber[J].IEEE Transactions on Power Electronics, 1988,3 (2): 147 -156.
8HUBER L, JOVANOVIC M H. Forward -flyback Converter with Current- doubler Rectifier: Analysis, Design, and Evaluation Results [ J ]. IEEE Transactions on Power Electronics, 1999,14 (1) : 184 - 192.