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Paper Abstract and Keywords
Presentation 2024-01-19 09:55
Modeling method that separates the main circuit and modulator of a digitally controlled switching converter
Takazumi Maeda, Hideaki Funaki, Yuichi Noge, Masahito Syoyama (Kyudai), Yu Yonezawa (Meidai), Akihiko Miyazawa (Model Core Institute) EE2023-47
Abstract (in Japanese) (See Japanese page) 
(in English) To design a controller for a switching power supply, it is necessary to know the characteristics of the main circuit and modulator of the converter to be controlled. However, since the influence on the phase characteristics of the modulator is small outside the high frequency region, the phase characteristics of the modulator have been designed by simple modeling. Incidentally, converters are required to have high responsiveness so that they can quickly respond to fluctuations in output voltage. The wider the bandwidth, the faster the response. When designing a wideband power supply, it is necessary to model the phase characteristics of the modulator in detail because the influence on the phase characteristics of the modulator cannot be ignored in the high frequency region. When the main circuit was modeled using the state averaging method, the time ratio modulator was modeled using three elements: sample hold, delay time, and inverse sample hold. As a result, we clarified the relationship between the frequency characteristics and the duty ratio of the duty ratio modulator. As a time ratio modulator, trailing edge, leading edge, and both edge digital PWM were modeled.
Keyword (in Japanese) (See Japanese page) 
(in English) DC-DC converter / modulator / state averaging method / modeling / / digital PWM / /  
Reference Info. IEICE Tech. Rep., vol. 123, no. 343, EE2023-47, pp. 43-48, Jan. 2024.
Paper # EE2023-47 
Date of Issue 2024-01-11 (EE) 
ISSN 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. (License No.: 10GA0019/12GB0052/13GB0056/17GB0034/18GB0034)
Download PDF EE2023-47

Conference Information
Committee EE  
Conference Date 2024-01-18 - 2024-01-19 
Place (in Japanese) (See Japanese page) 
Place (in English)  
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Paper Information
Registration To EE 
Conference Code 2024-01-EE 
Language Japanese 
Title (in Japanese) (See Japanese page) 
Sub Title (in Japanese) (See Japanese page) 
Title (in English) Modeling method that separates the main circuit and modulator of a digitally controlled switching converter 
Sub Title (in English)  
Keyword(1) DC-DC converter  
Keyword(2) modulator  
Keyword(3) state averaging method  
Keyword(4) modeling  
Keyword(6) digital PWM  
1st Author's Name Takazumi Maeda  
1st Author's Affiliation Kyushu University (Kyudai)
2nd Author's Name Hideaki Funaki  
2nd Author's Affiliation Kyushu University (Kyudai)
3rd Author's Name Yuichi Noge  
3rd Author's Affiliation Kyushu University (Kyudai)
4th Author's Name Masahito Syoyama  
4th Author's Affiliation Kyushu University (Kyudai)
5th Author's Name Yu Yonezawa  
5th Author's Affiliation Nagoya University (Meidai)
6th Author's Name Akihiko Miyazawa  
6th Author's Affiliation Model Core Institute Co., Ltd. (Model Core Institute)
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Speaker Author-1 
Date Time 2024-01-19 09:55:00 
Presentation Time 25 minutes 
Registration for EE 
Paper # EE2023-47 
Volume (vol) vol.123 
Number (no) no.343 
Page pp.43-48 
Date of Issue 2024-01-11 (EE) 

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