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Paper Abstract and Keywords
Presentation 2024-06-28 14:55
EMC Macromodel Considering Load Current Dependence in DC/DC Converter Circuits
Kohei Yano, Tohlu Matsushima, Yuki Fukumoto (kyutech), Hiroyuki Okumura (Panasonic) EMCJ2024-16
Abstract (in Japanese) (See Japanese page) 
(in English) Currently, technology is being developed to reduce man-hours by modeling ICs such as DC/DC converters and constructing EMC macro-models of ICs that may be noise sources, thereby enabling EMC evaluation at the board and system design stages. However, in DC/DC converters, as an output current changes, the high-frequency current generated by switching is also considered to change. Therefore, the objective of this study is to develop an EMC macro-model for output current variations. The EMC macro-model was constructed by extracting the equivalent internal current source and impedance of a DC/DC converter circuit with varying output current by measurement. The results showed that the value of the equivalent internal current source varied with the value of the DC load current, but the impedance did not change. Therefore, the output DC current dependence of the current source in each frequency band was expressed by an approximate equation, and the equation was used to calculate the current source under load current conditions that were not used in the modeling and compared with the measurement results. This allows us to say that this is an EMC macro model that takes output current dependence into account.
Keyword (in Japanese) (See Japanese page) 
(in English) EMC macro model / 150 Ω method / IEC61967 / ICEM-CE / DC/DC converter circuit / load current / /  
Reference Info. IEICE Tech. Rep., vol. 124, no. 92, EMCJ2024-16, pp. 47-52, June 2024.
Paper # EMCJ2024-16 
Date of Issue 2024-06-21 (EMCJ) 
ISSN Online edition: ISSN 2432-6380
Copyright
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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)
Download PDF EMCJ2024-16

Conference Information
Committee EMCJ IEE-EMC IEE-SPC  
Conference Date 2024-06-28 - 2024-06-28 
Place (in Japanese) (See Japanese page) 
Place (in English) Hotel Suncity 
Topics (in Japanese) (See Japanese page) 
Topics (in English) EMC 
Paper Information
Registration To EMCJ 
Conference Code 2024-06-EMCJ-EMC-SPC 
Language Japanese 
Title (in Japanese) (See Japanese page) 
Sub Title (in Japanese) (See Japanese page) 
Title (in English) EMC Macromodel Considering Load Current Dependence in DC/DC Converter Circuits 
Sub Title (in English)  
Keyword(1) EMC macro model  
Keyword(2) 150 Ω method  
Keyword(3) IEC61967  
Keyword(4) ICEM-CE  
Keyword(5) DC/DC converter circuit  
Keyword(6) load current  
Keyword(7)  
Keyword(8)  
1st Author's Name Kohei Yano  
1st Author's Affiliation Kyushu Institute of Technolog (kyutech)
2nd Author's Name Tohlu Matsushima  
2nd Author's Affiliation Kyushu Institute of Technolog (kyutech)
3rd Author's Name Yuki Fukumoto  
3rd Author's Affiliation Kyushu Institute of Technolog (kyutech)
4th Author's Name Hiroyuki Okumura  
4th Author's Affiliation Panasonic Holdings Corporation Product Analysis Center (Panasonic)
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Speaker Author-1 
Date Time 2024-06-28 14:55:00 
Presentation Time 20 minutes 
Registration for EMCJ 
Paper # EMCJ2024-16 
Volume (vol) vol.124 
Number (no) no.92 
Page pp.47-52 
#Pages 6 
Date of Issue 2024-06-21 (EMCJ) 

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