Abstract：A novel soft switching DC-DC converter is proposed and the principle of the converter is analyzed. The proposed novel DC-DC converter has realized the soft-switching of the main switch and the auxiliary switch and has higher efficiency than other topologies. The proposed converter will have a good application in power supply systems.

Keyword：Soft-Switching, DC-DC Converter

1 引言

图1 基本升压式变换器原理电路

2 基本评价

3　提出的新变换拓扑

图6 新型软开关变换器原理电路
　　图6是提出的新型软开关变换器原理电路。在一个开关周期内分为11种工作模式。

4　实验结果

　　输入电压：Vin=150V
　　输出电压：Vo=340V
　　输出功率：Po=1000W
　　开关频率：f=50kHz

　　从实验结果看，主功率开关和辅助功率开关均实现了软开关，且变换器效率较高。

5　结论

参考文献

[1] Zero-voltage-transition pulse-width-modulated converters
美国专利,专利号:5418704. 授权日:1995.05.23　发明人：Hua, et al.
[2] Technique for reducing rectifier reverse-recovery-related losses in high-voltage high power
converters. 美国专利,专利号:5736842. 授权日:1998.04.07发明人: Jovanovic
[3] Boost converter power supply with reduced losses, control circuit and method therefore
美国专利,专利号:5446366. 授权日: 1995.08.29发明人：Bassett, et al.
[4] Soft-switching cell for reducing switching losses in pulse-width-modulated converters
美国专利,专利号:6051961. 授权日:2000.04.18, Jang, et al.