一种典型共模电感的设计及优化

Design and Optimization of a Typical Common Mode Choke

本文通过对共模电感工作原理及特点的分析，提出了一种优化共模电感阻抗特性的设计方法。其中单层绕线设计极大地降低绕组分布电容，提高谐振频率，从而改善阻抗一频率特性；使用高导铁氧体磁芯与纳米晶磁芯的多磁芯共模电感设计，巧妙地利用铁氧体低频段优异的阻抗特性及纳米晶高频段优异的阻抗特性，从而使共模电感在很宽频段范围内均具有较高阻抗，这为优化共模电感阻抗特性及降低成本提供了一个全新的应用解决方案。

According to optlmlze reduce the and also th common mode have excell to analyzing the mechanism of common mode choke and its features, a new solution the impedance performance of common mode choke distributed capacitance and increase the resonance is fr proposed in this paper. It will equency by winding in one layer, s is a simple way to optimize the impedance performance. By the optimized design of choke with high permeability ferrite and nanocrystalline multi-core, the choke will nt impedance performance in a wide frequency range due to the excellent performance of ferrite in low frequency range and the excellent performance of nanocrystalline in high frequency range, it also pointed a new way to improve the impedance performance and reduce the cost of common mode choke.