A hybrid EMI filter with ultra-wide bandwidth

Author

Ho, W.C. ; Lee, C.K. ; Liu, X. ; Chan, Paul K W ; Hui, S.Y.R. ; Lee, Y.S.

Author_Institution

Convenient Power Ltd., Hong Kong

fYear

2008

fDate

24-28 Feb. 2008

Firstpage

676

Lastpage

681

Abstract

This paper describes an integrated active and passive planar electromagnetic-interference (EMI) filter structure with effective noise suppression over a very wide bandwidth. Such hybrid EMI filter paves the way input filter design for future mega-hertz switching power converters. This study shows that it has superior performance over traditional active niters and passive niters. Spectral results of a switching converter from 150 kHz to 30 MHz using various of active, passive and the proposed hybrid EMI filters have confirmed the validity and high performance of the hybrid EMI filter.

Keywords

electromagnetic interference; passive filters; switching convertors; ultra wideband technology; electromagnetic-interference filter structure; frequency 150 kHz to 30 MHz; noise suppression; passive planar hybrid EMI filter; power converters; ultrawide bandwidth; Active filters; Band pass filters; Bandwidth; Circuits; Electromagnetic interference; Filtering; Magnetic cores; Magnetic separation; Passive filters; Switching converters; EMI filters; active filtering; passive filtering; planar coreless transformer;

fLanguage

English

Publisher

ieee

Conference_Titel

Applied Power Electronics Conference and Exposition, 2008. APEC 2008. Twenty-Third Annual IEEE

Conference_Location

Austin, TX

ISSN

1048-2334

Print_ISBN

978-1-4244-1873-2

Electronic_ISBN

1048-2334

Type

conf

DOI

10.1109/APEC.2008.4522794

Filename

4522794