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Paper Abstract and Keywords
Presentation 2015-06-25 10:10
EMI Reduction by Extended Spread Spectrum in Switching Converter
Yasunori Kobori (NIT, Oyama College/Gunma Univ.), Nobukazu Tsukiji, Nobukazu Takai, Haruo Kobayashi (Gunma Univ.) EMCJ2015-18
Abstract (in Japanese) (See Japanese page) 
(in English) This paper proposes new EMI reduction method by extended spread spectrum using the PLL circuit with pseudo analog noise which is produced from new M-sequence circuit. The PLL circuit makes the reference clock modified with non-periodic analog noise which is supplied from new 3-bit M-sequence circuit. New pseudo analog noise is produced by inversing and/or exchanging the 3-bit. Using this modified clock from the PLL circuit for the saw-tooth signal in the switching converter, the spectrum of the PWM pulses is widely spread and the peak levels of the spectrums of the fundamental frequency and the harmonic frequencies are much reduced.
Keyword (in Japanese) (See Japanese page) 
(in English) EMI Reduction / Spread Spectrum / PLL Circuit / Pseudo Analog Noise / Switching Converter / / /  
Reference Info. IEICE Tech. Rep., vol. 115, no. 114, EMCJ2015-18, pp. 1-6, June 2015.
Paper # EMCJ2015-18 
Date of Issue 2015-06-18 (EMCJ) 
ISSN Print edition: ISSN 0913-5685  Online edition: ISSN 2432-6380
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. (No. 10GA0019/12GB0052/13GB0056/17GB0034/18GB0034)
Download PDF EMCJ2015-18

Conference Information
Conference Date 2015-06-25 - 2015-06-26 
Place (in Japanese) (See Japanese page) 
Place (in English) KMITL, Thailand 
Topics (in Japanese) (See Japanese page) 
Topics (in English) EMC Joint Workshop, 2015, Bangkok 
Paper Information
Registration To EMCJ 
Conference Code 2015-06-EMCJ-EMC-MAG 
Language English 
Title (in Japanese) (See Japanese page) 
Sub Title (in Japanese) (See Japanese page) 
Title (in English) EMI Reduction by Extended Spread Spectrum in Switching Converter 
Sub Title (in English)  
Keyword(1) EMI Reduction  
Keyword(2) Spread Spectrum  
Keyword(3) PLL Circuit  
Keyword(4) Pseudo Analog Noise  
Keyword(5) Switching Converter  
1st Author's Name Yasunori Kobori  
1st Author's Affiliation National Institute of Technology, Oyama College/Gunma University (NIT, Oyama College/Gunma Univ.)
2nd Author's Name Nobukazu Tsukiji  
2nd Author's Affiliation Gunma University (Gunma Univ.)
3rd Author's Name Nobukazu Takai  
3rd Author's Affiliation Gunma University (Gunma Univ.)
4th Author's Name Haruo Kobayashi  
4th Author's Affiliation Gunma University (Gunma Univ.)
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Date Time 2015-06-25 10:10:00 
Presentation Time 25 
Registration for EMCJ 
Paper # IEICE-EMCJ2015-18 
Volume (vol) IEICE-115 
Number (no) no.114 
Page pp.1-6 
#Pages IEICE-6 
Date of Issue IEICE-EMCJ-2015-06-18 

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