电工技术学报2012，Vol.27Issue(8)：108-113,119,7.
一种新型的平面无源集成EMI滤波器结构
A Novel Structure of Planar Passive Integrated EMI Filter
摘要
Abstract
In order to reduce the size of EMI filter and improve the power density of switch mode power supplies,a stacked-type interleaved planar passive integrated EMI filter structure is proposed in this paper.In this structure,the common-mode chokes,differential-mode inductors,common-mode capacitors and differential-mode capacitors are integrated into one unit.With this structure,the problem which large capacitor is hard to integrated is resolved,and the equivalent series resistance（ESR） and equivalent series inductance（ESL） of the integrated capacitor are minimized.The high-frequency common-mode equivalent circuit model is established taking into account the EPC of common-mode inductor and the ESL of common-mode capacitor and their ESR.The insertion loss formulas are deduced with ＂A＂ parameter matrix of two-port network.The simulation and prototypical experiment results are presented to show the effectiveness of the new integrated EMI filter structure and its high-frequency common-mode equivalent circuit model and insertion loss formulas.关键词
EMI滤波器/平面无源集成/堆积式交错并联/插入损耗/A参数矩阵/高频共模/等效电路模型Key words
EMI filter/planar passive integration/stacked-type interleaving/insertion loss/'A' parameter matrix/high frequency common-mode equivalent circuit model分类
信息技术与安全科学引用本文复制引用
杨玉岗,冯本成,王长华,李洪珠..一种新型的平面无源集成EMI滤波器结构[J].电工技术学报,2012,27(8):108-113,119,7.基金项目
国家自然科学基金 （）
教育部留学回国人员科研启动基金 （）
辽宁自然科学基金 （）
辽宁省高等学校创新团队支持计划（2008T077）资助项目 （）
