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Paper Abstract and Keywords
Presentation 2019-04-11 14:20
Prediction Accuracy in Conduction Disturbance Voltage of DC/DC Buck Converter Using Noise-source Equivalent-circuit Model
Taishi Uematsu, Yuhei Osaki, Yusuke Yano, Kengo Iokibe, Yoshitaka Toyota (Okayama Univ.) EMCJ2019-4
Abstract (in Japanese) (See Japanese page) 
(in English) We have applied the noise-source equivalent-circuit model to predict the conducted disturbance voltage to the DC/DC buck converter. It has been known that it is better to use a different value of the bypass capacitor instead of changing the value of the load resistance as the combination of actual measurements used to identify model parameters with high prediction accuracy. This is because by using a bypass capacitor it is possible to change only the high frequency noise current without affecting the switching operation itself. However, the prediction accuracy also changes depending on the combination of bypass capacitors used for identification, so it is necessary to know the combination with high prediction accuracy. Therefore, in this paper, we compare the condition numbers by the combination method using the condition number which is the scale when solving the simultaneous equations, and investigate the relationship with the prediction accuracy. At this time, the relationship between the simulation error and the condition number, which is the difference between the prediction accuracy and the actual measurement, was used. By taking the boundary value to the condition number using this relationship, the frequency used for prediction was limited. From this, the error near 10 MHz of the output voltage is reduced, and the difference between the actual measurement and the simulation becomes less than about 10 dB.
Keyword (in Japanese) (See Japanese page) 
(in English) DC/DC converter / Conduction disturbance / Noise-source equivalent circuit / Condition number / / / /  
Reference Info. IEICE Tech. Rep., vol. 119, no. 1, EMCJ2019-4, pp. 17-22, April 2019.
Paper # EMCJ2019-4 
Date of Issue 2019-04-04 (EMCJ) 
ISSN 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 2019-04-11 - 2019-04-12 
Place (in Japanese) (See Japanese page) 
Place (in English) Okinawa Industry Support Center 
Topics (in Japanese) (See Japanese page) 
Topics (in English) EMC 
Paper Information
Registration To EMCJ 
Conference Code 2019-04-EMCJ 
Language Japanese 
Title (in Japanese) (See Japanese page) 
Sub Title (in Japanese) (See Japanese page) 
Title (in English) Prediction Accuracy in Conduction Disturbance Voltage of DC/DC Buck Converter Using Noise-source Equivalent-circuit Model 
Sub Title (in English)  
Keyword(1) DC/DC converter  
Keyword(2) Conduction disturbance  
Keyword(3) Noise-source equivalent circuit  
Keyword(4) Condition number  
Keyword(5)  
Keyword(6)  
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1st Author's Name Taishi Uematsu  
1st Author's Affiliation Okayama University (Okayama Univ.)
2nd Author's Name Yuhei Osaki  
2nd Author's Affiliation Okayama University (Okayama Univ.)
3rd Author's Name Yusuke Yano  
3rd Author's Affiliation Okayama University (Okayama Univ.)
4th Author's Name Kengo Iokibe  
4th Author's Affiliation Okayama University (Okayama Univ.)
5th Author's Name Yoshitaka Toyota  
5th Author's Affiliation Okayama University (Okayama Univ.)
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Speaker Author-1 
Date Time 2019-04-11 14:20:00 
Presentation Time 25 minutes 
Registration for EMCJ 
Paper # EMCJ2019-4 
Volume (vol) vol.119 
Number (no) no.1 
Page pp.17-22 
#Pages 6 
Date of Issue 2019-04-04 (EMCJ) 

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