An Integrated EMI Choke for Differential-Mode and Common-Mode Noise Suppression

Author

Lai, Rixin ; Maillet, Yoann ; Wang, Fred ; Wang, Shuo ; Burgos, Rolando ; Boroyevich, Dushan

Author_Institution

GE Global Res. Center, Niskayuna, NY, USA

Volume

25

Issue

3

fYear

2010

fDate

3/1/2010 12:00:00 AM

Firstpage

539

Lastpage

544

Abstract

This letter presents a novel integration approach for the electromagnetic interference choke. A low-permeability differential-mode (DM) choke is placed within the open window of the common-mode (CM) choke. Both chokes share the same winding structure. With the proposed approach, the footprint of inductors is greatly reduced, and high-DM inductance can be achieved. First, small-signal measurement is carried out to demonstrate the design concept and the symmetry of the proposed structure. Then large-signal experimental results verify the attenuation characteristics, as well as the thermal performance.

Keywords

electromagnetic interference; inductors; magnetic cores; magnetic noise; magnetic permeability; windings; attenuation characteristics; common-mode choke; common-mode noise suppression; differential-mode choke; differential-mode noise suppression; electromagnetic interference choke; high differential mode inductance; high-permeability core; inductors; integrated EMI choke; integration method; low-permeability cores; small-signal measurement; thermal performance; winding structure; Common-mode choke; differential-mode choke; electromagnetic interference (EMI); integration;

fLanguage

English

Journal_Title

Power Electronics, IEEE Transactions on

Publisher

ieee

ISSN

0885-8993

Type

jour

DOI

10.1109/TPEL.2009.2030803

Filename

5210182