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Paper Abstract and Keywords
Presentation 2011-10-07 15:35
A Tapped-Inductor Buck Converter for Home DC Power Supply System
Kento Matsumoto, Kimihiro Nishijima, Terukazu Sato, Takashi Nabeshima (Oita Univ.) EE2011-21
Abstract (in Japanese) (See Japanese page) 
(in English) A proposed tapped-inductor buck converter with an auxiliary switch is discussed for home DC power supply system. The novel tapped-inductor converter is similar operation to a typical buck converter, although conventional tapped-inductor converters are similar operation to a typical buck-boost converter. As a result, (1) high step-down conversion is achieved (Vo/Vi=D/n), (2) the core size of the tapped-inductor is reduced (DC bias current = Load current), (3) open loop transfer function becomes a second-order delay, (4) all switching elements are easily droved by usually drive ICs without including the pulse transformer, (5) output overvoltage protection is achieved by an auxiliary capacitor. Moreover the switching loss can be reduced by a current resonant with the auxiliary capacitor and the leakage inductance. The operating and performance of the proposed converter were verified experimentally by a laboratory coin sized prototype (25mm x 25mm x 8mm ) of 48V input to 1.0V/25A output at 500kHz. As a result, 88% efficiency at half load and 85% efficiency at full load are realized.
Keyword (in Japanese) (See Japanese page) 
(in English) Tapped-inductor / Buck-Converter / POL / Active clamp / Current resonance / DC Power Supply / /  
Reference Info. IEICE Tech. Rep., vol. 111, no. 223, EE2011-21, pp. 17-22, Oct. 2011.
Paper # EE2011-21 
Date of Issue 2011-09-30 (EE) 
ISSN Print edition: ISSN 0913-5685    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 EE2011-21

Conference Information
Committee EE  
Conference Date 2011-10-07 - 2011-10-07 
Place (in Japanese) (See Japanese page) 
Place (in English) Makuhari-Messe 
Topics (in Japanese) (See Japanese page) 
Topics (in English)  
Paper Information
Registration To EE 
Conference Code 2011-10-EE 
Language Japanese 
Title (in Japanese) (See Japanese page) 
Sub Title (in Japanese) (See Japanese page) 
Title (in English) A Tapped-Inductor Buck Converter for Home DC Power Supply System 
Sub Title (in English)  
Keyword(1) Tapped-inductor  
Keyword(2) Buck-Converter  
Keyword(3) POL  
Keyword(4) Active clamp  
Keyword(5) Current resonance  
Keyword(6) DC Power Supply  
Keyword(7)  
Keyword(8)  
1st Author's Name Kento Matsumoto  
1st Author's Affiliation Oita University (Oita Univ.)
2nd Author's Name Kimihiro Nishijima  
2nd Author's Affiliation Oita University (Oita Univ.)
3rd Author's Name Terukazu Sato  
3rd Author's Affiliation Oita University (Oita Univ.)
4th Author's Name Takashi Nabeshima  
4th Author's Affiliation Oita University (Oita Univ.)
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Speaker Author-1 
Date Time 2011-10-07 15:35:00 
Presentation Time 25 minutes 
Registration for EE 
Paper # EE2011-21 
Volume (vol) vol.111 
Number (no) no.223 
Page pp.17-22 
#Pages 6 
Date of Issue 2011-09-30 (EE) 

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