DocumentCode
971592
Title
Reduction of EMI in planar transformers by charge balancing
Author
Hofsajer, I.W. ; Fricker, K. ; Crosato, M.O.
Author_Institution
Dept. of Electr. & Electron. Eng., Rand Afrikaans Univ., Auckland Park, South Africa
Volume
38
Issue
25
fYear
2002
fDate
12/5/2002 12:00:00 AM
Firstpage
1712
Lastpage
1714
Abstract
A simple method of reducing the common-mode electromagnetic interference (EMI) of a switching circuit employing a planar wound transformer is presented. The method is based on the concept of charge balance being maintained within the transformer during a switching event. Charge balance is ensured by means of a compensating planar shield winding.
Keywords
electromagnetic interference; electromagnetic shielding; switched mode power supplies; transformer windings; EMI; charge balance; charge balancing; common-mode electromagnetic interference; planar shield winding; planar transformers; switching event; wound transformer;
fLanguage
English
Journal_Title
Electronics Letters
Publisher
iet
ISSN
0013-5194
Type
jour
DOI
10.1049/el:20021159
Filename
1137482
Link To Document