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Paper Abstract and Keywords
Presentation 2025-07-31 11:30
Transfer Function of Loop Transfer Characteristics Measurement Systems for SMPSs
Hideaki Funaki, Yushi Miura (NUT) EE2025-13
Abstract (in Japanese) (See Japanese page) 
(in English) When designing a controller for SMPSs (Switched-Mode Power Supplies), the loop transfer characteristics are measured using FRA (Frequency Response Analyzer) to evaluate the control stability. The phase characteristics of the feedback loop obtained by this measurement are affected by the proportional gain of the feedback controller. However, the conventional loop transfer function model can not express this effect. In this paper, we focus on that the feedback loop is not actually cut at measurement, and model the loop transfer characteristics measurement system using FRA more accurately by considering this loop. In addition, the proposed transfer function model of the measurement system is compared with the simulation results, and the validity is confirmed.
Keyword (in Japanese) (See Japanese page) 
(in English) FRA / Frequency Response Analyzer / Loop transfer function / State-space averaging / Transfer function modeling / / /  
Reference Info. IEICE Tech. Rep., vol. 125, no. 140, EE2025-13, pp. 15-20, July 2025.
Paper # EE2025-13 
Date of Issue 2025-07-24 (EE) 
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)
Download PDF EE2025-13

Conference Information
Committee EE IEE-SPC  
Conference Date 2025-07-31 - 2025-08-01 
Place (in Japanese) (See Japanese page) 
Place (in English)  
Topics (in Japanese) (See Japanese page) 
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Paper Information
Registration To EE 
Conference Code 2025-07-EE-SPC 
Language Japanese 
Title (in Japanese) (See Japanese page) 
Sub Title (in Japanese) (See Japanese page) 
Title (in English) Transfer Function of Loop Transfer Characteristics Measurement Systems for SMPSs 
Sub Title (in English)  
Keyword(1) FRA  
Keyword(2) Frequency Response Analyzer  
Keyword(3) Loop transfer function  
Keyword(4) State-space averaging  
Keyword(5) Transfer function modeling  
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1st Author's Name Hideaki Funaki  
1st Author's Affiliation Nagaoka University of Technology (NUT)
2nd Author's Name Yushi Miura  
2nd Author's Affiliation Nagaoka University of Technology (NUT)
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Speaker Author-1 
Date Time 2025-07-31 11:30:00 
Presentation Time 30 minutes 
Registration for EE 
Paper # EE2025-13 
Volume (vol) vol.125 
Number (no) no.140 
Page pp.15-20 
#Pages 6 
Date of Issue 2025-07-24 (EE) 

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