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Paper Abstract and Keywords
Presentation 2019-01-16 12:00
Limit Operating Frequency of Peak Current Mode Control Boost DC-DC Converter Considering Delay Time
Kazuya Fujiwara, Masahito Shoyama (Kyushu Univ.) EE2018-41
Abstract (in Japanese) (See Japanese page) 
(in English) Peak current mode control is a widely used control method for DC-DC converter because it has higher stability and responsibility than the conventional voltage mode control. However, in the peak current mode control, the delay time is generated from the PWM comparator which controls the duty ratio to the turn-off of the switch in the actual operation. If the CLK frequency is increased ignoring this delay time, it may become the frequency dividing operation. In this operation, the DC-DC converter’s switching frequency is lower than the CLK frequency and high frequency switching operation may not be possible. In this paper, we clarified the mechanism of this frequency dividing operation and derived the relationship between the turn-off delay time and the limit operating frequency of the DC-DC converter. Also, we derived the relationship when we applied the slope compensation as well. As experimental results, it was confirmed that the limit operating frequency is lower as the duty ratio is lower and the slope is larger with the turn-off delay time.
Keyword (in Japanese) (See Japanese page) 
(in English) peak current mode control / boost DC-DC converter / turn-off delay time / frequency dividing operation / limit operating frequency / slope compensation / /  
Reference Info. IEICE Tech. Rep., vol. 118, no. 387, EE2018-41, pp. 19-24, Jan. 2019.
Paper # EE2018-41 
Date of Issue 2019-01-09 (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 EE2018-41

Conference Information
Committee EE  
Conference Date 2019-01-16 - 2019-01-17 
Place (in Japanese) (See Japanese page) 
Place (in English) KCIC 
Topics (in Japanese) (See Japanese page) 
Topics (in English) DC/DC converter, New circuit for power conversion and control, others 
Paper Information
Registration To EE 
Conference Code 2019-01-EE 
Language Japanese 
Title (in Japanese) (See Japanese page) 
Sub Title (in Japanese) (See Japanese page) 
Title (in English) Limit Operating Frequency of Peak Current Mode Control Boost DC-DC Converter Considering Delay Time 
Sub Title (in English)  
Keyword(1) peak current mode control  
Keyword(2) boost DC-DC converter  
Keyword(3) turn-off delay time  
Keyword(4) frequency dividing operation  
Keyword(5) limit operating frequency  
Keyword(6) slope compensation  
Keyword(7)  
Keyword(8)  
1st Author's Name Kazuya Fujiwara  
1st Author's Affiliation Kyushu University (Kyushu Univ.)
2nd Author's Name Masahito Shoyama  
2nd Author's Affiliation Kyushu University (Kyushu Univ.)
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Speaker Author-1 
Date Time 2019-01-16 12:00:00 
Presentation Time 30 minutes 
Registration for EE 
Paper # EE2018-41 
Volume (vol) vol.118 
Number (no) no.387 
Page pp.19-24 
#Pages
Date of Issue 2019-01-09 (EE) 


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