A Novel Soft-Switching Boost Converter With Magnetically Coupled Resonant Snubber

作者：Zhan, Tianwen^*; Zhang, Yingchao; Nie, Jintong; Zhang, Yongchang; Zhao, Zhengming

来源：IEEE Transactions on Power Electronics, 2014, 29(11): 5680-5687.

DOI：10.1109/TPEL.2013.2295887

• Boost converter
• coupled inductor
• passive lossless snubber
• soft-switching

A novel soft-switching boost converter with a magnetically coupled resonant snubber is presented in this paper. The passive snubber circuit, which is composed of two diodes, two capacitors, and one coupled inductor, ensures a zero current turn-on and zero voltage turn-off conditions for the power switch, and alleviates the reverse-recovery problem for the output diode. Moreover, with the proper design of the snubber circuit, the power switch and output diode can be softly switched in a wide load range. The operating principle and performance analysis of the proposed converter are described in detail. The experiment from a 400 W prototype has been carried out and the results show that the proposed converter has the advantages of simple structure, low complexity control, and the highest efficiency is more than 95%.

• 出版日期2014-11
• 单位北方工业大学; 中国人民解放军重庆通信学院; 清华大学