电工技术学报2012，Vol.27Issue(3)：181-187,7.
基于积木式交错并联的平面全集成EMI滤波器
Planar Completely Integrated EMI Filter Based on Stacked-Type Interleaved Connection
摘要
Abstract
In order to reduce the size of filter and improve the power density of switch and power supplies,a passive integrated EMI filter structure based on planar stacked-type interleaved parallel connection is proposed in the paper.According to frequency range distributed rule of differential mode noise and common mode noise,film medium materials with higher stability of temperature is interleaved to realize the integration of common mode capacitance.In order to realize the integration of differential-mode capacitance,the Ⅱkind ceramic material X7R with higher stability of electric property is used.The PCB winding is used to realize the integration of common-mode inductor and differential mode the inductance.The equivalent circuits of common-mode and differential-mode in high-frequency modeling of this EMI filter are given,furthermore,the calculated formulas of insertion loss are deduced.The results of simulation and experiment verify the effectiveness of planar completely integrated EMI filter,and the correctness of the equivalent circuits of high frequency differential-mode,common-mode and the formulas of insertion loss.关键词
平面全集成EMI滤波器/积木式交错并联/插入损耗/高频差/共模等效电路Ⅱ类陶瓷材料X7RKey words
Planar completely integrated EMI filter/stacked-type interleaved connected/insertion loss/high frequency differential/common-mode equivalent circuit/Ⅱkind ceramic materials X7R分类
信息技术与安全科学引用本文复制引用
杨玉岗,那欣,王长华,冯本成..基于积木式交错并联的平面全集成EMI滤波器[J].电工技术学报,2012,27(3):181-187,7.基金项目
国家自然科学基金 （）
辽宁省高等学校创新团队支持计划（2008T077）资助项目 （）
