Passive and active hybrid integrated EMI filters

Author

Biela, J. ; Wirthmueller, A. ; Waespe, R. ; Heldwein, M.L. ; Kolar, J.W. ; Waffenschmidt, E.

Author_Institution

Power Electron. Syst. Lab., Swiss Fed. Inst. of Technol., Zurich, Switzerland

fYear

2006

Abstract

Two new planar integrated EMI filter structures which reduce the filter volume and which are based on standard PCB process technology are presented in this paper. First, a passive integrated EMI filter is presented, which results in a volume reduction of 25% compared to the discrete solution. However, this filter requires a planar ferrite core for the CM inductor. In order to eliminate the ferrite core and reduce the filter volume further (-40% vs. discrete filter) a passive integrated structure is combined with an active EMI filtering circuit. The transfer function, the volume and the losses of the discrete and the two integrated filters, which are designed for a 600W PFC converter, are compared.

Keywords

active filters; electromagnetic interference; ferrites; inductors; passive filters; power convertors; power factor correction; power filters; printed circuits; 600 W; PCB process technology; active integrated EMI filter; common mode inductor; passive integrated EMI filter; planar ferrite core; power converter; power factor correction; Active filters; Capacitors; Circuits; Electromagnetic interference; Ferrites; Inductors; Laboratories; Passive filters; Switching frequency; Transfer functions;

fLanguage

English

Publisher

ieee

Conference_Titel

Applied Power Electronics Conference and Exposition, 2006. APEC '06. Twenty-First Annual IEEE

Print_ISBN

0-7803-9547-6

Type

conf

DOI

10.1109/APEC.2006.1620688

Filename

1620688