摘要
在开关电源类产品的传导型电磁干扰(EMI)抑制方面,电源输入端口加装EMI滤波器是一种行之有效的方法。这里阐述了EMI滤波器的性能指标和基本设计方法,分析了无源元件的高频模型,对寄生效应进行了消除。利用PSpice软件,分析寄生参数对滤波器性能的影响,验证所提方法对滤波器优化的实际效果。为开关电源EMI滤波器的优化设计提供借鉴。
In switching power supply products of transmitting electromagnetic interference （EMI） suppression, power input port with EMI filter is a kind of operative method.This performance index of the EMI filter and the basic design method is expounded, the high frequency model of passive component and the method to eliminate parasitic effects are analyzed.The influence of parasitic parameters on filter performance and the method of filter optimization effect is evaluated using PSpice.To serve as a reference for the optimization design of the switch power supplies EMI filter.
出处
《电力电子技术》
CSCD
北大核心
2015年第11期96-99,共4页
Power Electronics
关键词
滤波器
电磁干扰
寄生参数
插入损耗
filter
electromagnetic interference
parasitic parameters
insertion loss
