一种平面全集成EMI滤波器结松  

A Structure of Planar completely Integrated EMI Filter

作　　者：王长华[1] 杨玉岗[1] 胡鹏[1] 

机构地区：[1]辽宁工程技术大学电气与控制工程学院,葫芦岛125105

出　　处：《磁性元件与电源》2012年第2期105-111,共7页Components and Power

摘　　要：为了减少EMI滤波器的体积，提高开关电源的功率密度，本文提出了一种平面全集成EMI滤波器结构。采用此结构，可以将EMI滤波器的共模电感，差模电感，共模电容和差模电容全部集成到一幅平面磁芯中。给出集成EMI滤波器差共等效电路的高频模型，并推导了其插入损耗的计算公式，实验样机表明实验结果和理论分析以及仿真结果吻合较好。In order to reduce the size of filter and improve the power density of switch mode power supplies, a planar completely integrated EMI filter structure is proposed in this paper. Application of this structure can integrate common mode chokes, differential-mode inductor, common mode capacitors and differential-mode capacitors into one planar core. The integrated EMI filter, which high-frequency modeling of commonraode and differential-mode equivalent circuit are given, furthermore, calculated formulas of insertion loss are deduced. The prototypical experiment indicates that experimental results and theoretical analysis as well as simulated results matched well.

关 键 词：EMI滤波器 差模 共模 平面集成 插入损耗 

分 类 号：TN713[电子电信—电路与系统]