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

作者：Lai Rixin^*; Maillet Yoann; Wang Fred; Wang Shuo; Burgos Rolando; Boroyevich Dushan

来源：IEEE Transactions on Power Electronics, 2010, 25(3): 539-544.

DOI：10.1109/TPEL.2009.2030803

• Common-mode choke
• differential-mode choke
• electromagnetic interference (EMI)
• integration

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.

• 出版日期2010-3