高频开关电源的EMI滤波器的研究  

Study of the EMI Filter of High Frequency Switching Power Supply

作　　者：冯楠[1] 曾国宏[1] 张佳[1] 

机构地区：[1]北京交通大学电气工程学院,北京100044

出　　处：《电气技术》2006年第12期15-17,共3页Electrical Engineering

摘　　要：本文介绍了分离高频开关电源中噪声的方法,分析了共模和差模噪声中共模噪声占主要成份。在此基础上介绍了一种开关电源EMI滤波器的高频模型,并对这个滤波器模型的高频特性进行了分析。This paper introduces a method of the separation of common mode and differential mode noise from high frequency switching power supply’s voltage, and analyzescommon mode is the dominant component of the noise. A high frequency model for switching power EMI filter is introduced basing on the analyzing result. Simulation result has proved the analyzing result and the filter’s good characteristic for high frequency.

关 键 词：开关电源 EMI滤波器 高频特性 

分 类 号：TN86[电子电信—信息与通信工程] TN713