通信开关电源的EMI/EMC设计  

EMI/EMC Design of Communication Switching Mode Power Supply

作　　者：张津津[1] 罗映红[1] 周启虎[1] 

机构地区：[1]兰州交通大学电子与信息工程学院,甘肃兰州730070

出　　处：《现代电子技术》2007年第13期71-73,共3页Modern Electronics Technique

摘　　要：通信开关电源是通信系统中的一种主要的干扰源之一,由于他本身工作特性使得电磁干扰问题相当突出,同时他的电磁兼容问题也是较难解决的。简要分析了通信开关电源的电磁兼容性要求、电磁兼容性的成因及解决方法。主要从耦合途径出发,介绍了开关电源电磁兼容性设计的滤波和屏蔽技术,以提高开关电源的电磁兼容性,保证开关电源正常工作。Communication switching mode power supply is one of the most important interference sources of the communication system,its work characteristic makes the EMI problem very outstanding, meanwhile,its EMC problem is also more difficult to resolve. This paper simply analyzes EMC requirement of communication switching mode power supply, the reason of EMC and the way to research. Main introduces filter and screen technology of EMC design of switching mode power supply, which is from the ways of coupling. Thus it enhances the electromagnetic compatibility of the power supply of switch and ensures the routine work of power supply of switch.

关 键 词：开关电源 电磁干扰 传导干扰 辐射干扰 

分 类 号：TN86[电子电信—信息与通信工程]