Paper Abstract and Keywords |
Presentation |
2015-12-17 16:00
[Poster Presentation]
A ZVS CMOS Rectifier with Voltage-Time-Conversion DLL for Wireless Power Transmission Hideki Shinohara, Kousuke Miyaji (Shinshu Univ.) ICD2015-79 CPSY2015-92 Link to ES Tech. Rep. Archives: ICD2015-79 |
Abstract |
(in Japanese) |
(See Japanese page) |
(in English) |
Active diodes are widely used for a highly efficient low voltage CMOS rectifier in a wireless power transmission system as it can achieve better rectifier efficiency than pn junction diodes for its low forward voltage drop. However, reverse current due to a finite delay time of the comparator becomes an issue when operating frequency is high. In this work, the delay-locked loop (DLL) with voltage-time-conversion circuit is proposed to suppress the reverse current of the active diodes and demonstrated to achieve zero-voltage switching (ZVS). In the previous works, ZVS is only achieved in limited conditions by global PVT variations. On the other hand, the proposed DLL scheme can reduce the influence of the global PVT variations and achieves ZVS in wide conditions by VTC circuit that converts voltage error to time domain signal. The measured maximum power conversion efficiency of 78% is obtained at the output power of 39mW in a 0.18m standard CMOS process. |
Keyword |
(in Japanese) |
(See Japanese page) |
(in English) |
wireless power transmission circuit / CMOS rectifier / active diode / comparator / DLL / / / |
Reference Info. |
IEICE Tech. Rep., vol. 115, no. 373, ICD2015-79, pp. 61-61, Dec. 2015. |
Paper # |
ICD2015-79 |
Date of Issue |
2015-12-10 (ICD, CPSY) |
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 |
ICD2015-79 CPSY2015-92 Link to ES Tech. Rep. Archives: ICD2015-79 |
Conference Information |
Committee |
ICD CPSY |
Conference Date |
2015-12-17 - 2015-12-18 |
Place (in Japanese) |
(See Japanese page) |
Place (in English) |
Kyoto Institute of Technology |
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(See Japanese page) |
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Paper Information |
Registration To |
ICD |
Conference Code |
2015-12-ICD-CPSY |
Language |
Japanese |
Title (in Japanese) |
(See Japanese page) |
Sub Title (in Japanese) |
(See Japanese page) |
Title (in English) |
A ZVS CMOS Rectifier with Voltage-Time-Conversion DLL for Wireless Power Transmission |
Sub Title (in English) |
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wireless power transmission circuit |
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CMOS rectifier |
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active diode |
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comparator |
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DLL |
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1st Author's Name |
Hideki Shinohara |
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Shinshu University (Shinshu Univ.) |
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Kousuke Miyaji |
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Shinshu University (Shinshu Univ.) |
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Speaker |
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Date Time |
2015-12-17 16:00:00 |
Presentation Time |
100 minutes |
Registration for |
ICD |
Paper # |
ICD2015-79, CPSY2015-92 |
Volume (vol) |
vol.115 |
Number (no) |
no.373(ICD), no.374(CPSY) |
Page |
p.61 |
#Pages |
1 |
Date of Issue |
2015-12-10 (ICD, CPSY) |
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