一种新型软开关Buck变换器的研究

基金项目:

河南省科技攻关计划项目(082102210015)

详细信息

Research of a New Type of Soft-switching Buck Converter

1.
School of Electronic and Information Engineering of Henan University of Science and Technology,Luoyang 471003,China.2.School of Materials Science and Engineering of Henan University of Science and T

摘要: 针对传统ZVT-PWM变换器的辅助开关硬关断的不足,提出了一种新型PWM控制的软开关Buck变换器方案,详细介绍了该新型软开关Buck变换器的拓扑结构及工作原理,并给出了具体的设计过程。新型软开关Buck变换器的辅助电路使主开关工作在零电压状态,所有的半导体器件均工作在软开关条件下,从而减小了开关损耗。仿真结果证明了该新型软开关Buck变换器方案的有效性。
- 软开关 /
- Buck变换器 /
- 谐振 /
- 零电压转换 /
- ZVT-PWM
Abstract: To solve the shortcomings that auxiliary switch of traditional ZVT-PWM converter is hard power-off,the paper proposed a scheme of the new type of soft-switching Buck converter with PWM control,introduced topology and working principle of the new type of soft-switching Buck converter in details,and gave concrete designing process.The auxiliary circuit of the Buck converter makes main switch work in zero-voltage state,all semiconductor devices work in condition of soft-switching,which decreases losses of the switch.The simulation result proved validity of the scheme of the new type of soft-switching Buck converter.
- soft-switching /
- Buck converter /
- resonance /
- zero-voltage transition /
- ZVT-PWM