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开关电源输入EMI滤波器设计与仿真
引用本文:曹丽萍,张勋,陈晨,刘韬.开关电源输入EMI滤波器设计与仿真[J].电子科技,2010,23(4):42-44,49.
作者姓名:曹丽萍  张勋  陈晨  刘韬
作者单位:1. 西安电子科技大学,电子工程学院,陕西,西安,710071
2. 河北省清河县电力局,输变电工区,河北,邢台,054800
摘    要:开关电源中常用EMI滤波器抑制共模干扰和差模干扰。三端电容器在抑制开关电源高频干扰方面有良好性能。文中在开关电源一般性能EMI滤波器电路结构基础上,给出了使用三端电容器抑制高频噪声的滤波器结构。并使用PSpice软件对插入损耗进行仿真,给出了仿真结果。

关 键 词:开关电源  EMI滤波器  三端电容器  插入损耗

Design and Simulation of Switching-Mode Power Supply Input EMI Filters
Cao Liping,Zhang Xun,Chen Chen,Liu Tao.Design and Simulation of Switching-Mode Power Supply Input EMI Filters[J].Electronic Science and Technology,2010,23(4):42-44,49.
Authors:Cao Liping  Zhang Xun  Chen Chen  Liu Tao
Affiliation:1.School of Electronic Engineering;Xidian University;Xi'an 710071;China;2.Transmission Work Area;Hebei Province Electric Power Bureau;Xingtai 054800;China
Abstract:The electromagnetic interference(EMI)filter is used to suppress common-mode interference and differential-mode interference.Three-terminal capacitance performs well in suppressing high frequency interference.A structure of the switching-mode power supply EMI filter using three-terminal capacitance is presented to suppress high frequency noise based on the structure of the generic EMI filter in this paper.The insertion loss of the designed filter is simulated using Pspice,and the results are given.
Keywords:Switching-Mode Power Supply(SMPS)  Electromagnetic Interference(EMI) filter  three-terminalcapacitance  insertion loss
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