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Paper Abstract and Keywords
Presentation 2013-07-11 15:05
Reducing Common-Mode Noise of Power Converter Using Impedance Balance Method.
Atsuhiro Takahashi, Hiroshi Tsukada, Takashi Kojima, Yoshiyuki Hattori (TOYOTA Central Labs.), Tsuyoshi Funaki (Osaka Univ.), Osami Wada (Kyoto Univ.) EMCJ2013-35
Abstract (in Japanese) (See Japanese page) 
(in English) This study discusses the generating mechanism of the common-mode voltage in FM-radio band at the input terminal of a step-down converter. The following mechanism was clarified: The common mode voltage is generated by a through-current which flows between a positive power supply line and a negative one when the transistors in the converter are turned on. The voltage depends on the balance of the impedance between both power supply lines. Even though the impedances of these lines are balanced, the balance is lost due to the capacitance Cs formed parasitically between the middle point of transistor-arm and ground. From these results, to reduce the common mode voltage, it is necessary to balance the impedances between both power supply lines, and to make the capacitances of the balance circuit much larger than the Cs.
Keyword (in Japanese) (See Japanese page) 
(in English) Power converter / Common-mode current / Impedance balance / Reduction of noise / / / /  
Reference Info. IEICE Tech. Rep., vol. 113, no. 122, EMCJ2013-35, pp. 45-50, July 2013.
Paper # EMCJ2013-35 
Date of Issue 2013-07-04 (EMCJ) 
ISSN Print edition: ISSN 0913-5685    Online edition: ISSN 2432-6380
Copyright
and
reproduction		 All rights are reserved and no part of this publication may be reproduced or transmitted in any form or by any means, electronic or mechanical, including photocopy, recording, or any information storage and retrieval system, without permission in writing from the publisher. Notwithstanding, instructors are permitted to photocopy isolated articles for noncommercial classroom use without fee. (License No.: 10GA0019/12GB0052/13GB0056/17GB0034/18GB0034)
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Conference Information
Committee EMCJ  
Conference Date 2013-07-11 - 2013-07-11 
Place (in Japanese) (See Japanese page) 
Place (in English) Kikai-Shinko-Kaikan Bldg. 
Topics (in Japanese) (See Japanese page) 
Topics (in English) Young Scientists meeting 
Paper Information
Registration To EMCJ 
Conference Code 2013-07-EMCJ 
Language Japanese 
Title (in Japanese) (See Japanese page) 
Sub Title (in Japanese) (See Japanese page) 
Title (in English) Reducing Common-Mode Noise of Power Converter Using Impedance Balance Method. 
Sub Title (in English)  
Keyword(1) Power converter  
Keyword(2) Common-mode current  
Keyword(3) Impedance balance  
Keyword(4) Reduction of noise  
Keyword(5)  
Keyword(6)  
Keyword(7)  
Keyword(8)  
1st Author's Name Atsuhiro Takahashi  
1st Author's Affiliation TOYOTA Central R&D Labs., INC. (TOYOTA Central Labs.)
2nd Author's Name Hiroshi Tsukada  
2nd Author's Affiliation TOYOTA Central R&D Labs., INC. (TOYOTA Central Labs.)
3rd Author's Name Takashi Kojima  
3rd Author's Affiliation TOYOTA Central R&D Labs., INC. (TOYOTA Central Labs.)
4th Author's Name Yoshiyuki Hattori  
4th Author's Affiliation TOYOTA Central R&D Labs., INC. (TOYOTA Central Labs.)
5th Author's Name Tsuyoshi Funaki  
5th Author's Affiliation Osaka University (Osaka Univ.)
6th Author's Name Osami Wada  
6th Author's Affiliation Kyoto University (Kyoto Univ.)
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Speaker Author-1 
Date Time 2013-07-11 15:05:00 
Presentation Time 25 minutes 
Registration for EMCJ 
Paper # EMCJ2013-35 
Volume (vol) vol.113 
Number (no) no.122 
Page pp.45-50 
#Pages 6 
Date of Issue 2013-07-04 (EMCJ) 

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