The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Aug. 16, 2011
Filed:
Nov. 06, 2008
Dehong Xu, Hangzhou, CN;
Xiao-feng Wu, Hangzhou, CN;
Yanjun Zhang, Hangzhou, CN;
Yi Chen, Hangzhou, CN;
Yasuhiro Okuma, Tokyo, JP;
Kazuaki Mino, Hino, JP;
Dehong Xu, Hangzhou, CN;
Xiao-feng Wu, Hangzhou, CN;
Yanjun Zhang, Hangzhou, CN;
Yi Chen, Hangzhou, CN;
Yasuhiro Okuma, Tokyo, JP;
Kazuaki Mino, Hino, JP;
Fuji Electric Systems Co., Ltd., Tokyo, JP;
Zhe Jiang University, Zhejiang Province, CN;
Abstract
An integrated structure of common-mode inductors and differential-mode capacitors in an EMI filter realized using a flexible circuit board, including: a closed magnetic circuit formed by a first magnetic core and a second magnetic core, optionally including an air gap formed in a middle pillar of the magnetic cores, and with a flexible printed circuit board (FPC) wound on at least one pillar, the FPC formed by laminating alternating insulating and copper foil layers. The integrated structure of inductors and capacitors is advantageous in reducing the volume of the EMI filter and improving the power density of an electronic power transformer.