一种新型零电流PWM Buck开关电路的设计  

Design of A New Type of Zero Current PWM Buck Switching Circuit

作　　者：陆超[1,2] 袁静[1] 

机构地区：[1]中国矿业大学,江苏徐州221008 [2]宿迁学院,江苏宿迁223800

出　　处：《通信电源技术》2009年第1期29-32,共4页Telecom Power Technology

摘　　要：提出一种新型零电流开关PWM Buck电路,对其拓扑结构和工作原理进行了详细分析,仿真结果证明该电路中所有的开关管和二极管均能在软开关条件下完成导通和关断,且具有很小的电流应力,能有效解决IGBT关断时存在的"拖尾电流"问题。In this article, a new type of zero current PWM Buck switching circuit is proposed and its topology and working principle are described in detail. The simulation results show that all switching devices and diodes of the circuit can be conducted and turned off under the soft switch and it has good performance for the small current, which can effectively solve ＂current tailing＂ when IGBT is turned off.

关 键 词：零电流开关 PWM BUCK电路 拖尾电流 

分 类 号：TM46[电气工程—电器]