Research on High Power Factor High Efficiency DC Switching Power Supply

摘要：

This paper proposes a blueprint of high power factor high power supply. The power supply is made up of two stages .First stage is Power Factor Correction Unit made up of Boost chopper circuit with LCD snubber. Second stage is DC/DC converter with ZVS phase-shifted technique. Synchronous rectifier is used instead of shottkey diode to reduce the on-state and conduction losses .AC/DC stage works at 100KHZ and DC/DC stage works at 80KHZ. By adding all this, the proposed two-stage power supply overcomes some disadvantages of the conventional Full-Bridge power supply The result is proved by the test .And a conclusion is drawn that the supply system is suitable for high power situation.

关键词： Phase Shifted ZVS LCD Passive Lossless Snubber Active Power Factor Correction (APFC) UC3854 UC3875

作者: QIU Nan FAN Yinhai ZHAO Min

作者单位: Laboratory of Power electronics, College of Automation and Electrical Engineering,Dalian Maritime University of China P.R, Dalian, 116023

会议类型: 国际会议

会议名称: 第七届国际测试技术研讨会

会议地点: 北京

会议语种:英文

在线出版日期: 2007-08-05（万方平台首次上网日期，不代表论文的发表时间）