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| Presentation | 2017-12-14 15:10 Maximum power estimator for ultra-low power energy harvesters Hiroki Asano, Tetsuya Hirose, Toshihiro Ozaki, Nobutaka Kuroki, Masahiro Numa (Kobe Univ.)  CAS2017-98 ICD2017-86 CPSY2017-95 Link to ES Tech. Rep. Archives: ICD2017-86 |
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| Abstract | (in Japanese) | (See Japanese page) |
| (in English) | In this paper, we propose a fully integrated and area-efficient resistor-less relaxation oscillator (ROSC) for ultra-low power real-time clock (RTC) applications. The proposed ROSC is based on a conventional ROSC and modified to be area-efficient circuit configuration, without using resistors. The proposed ROSC consists of a bias current source, proportional to absolute temperature (PTAT) voltage source, current mode ROSC, shunt regulator, and output logic circuit. The PTAT voltage source and shut regulator are used to compensate for the temperature characteristics of the ROSC. By implementing our proposed ROSC, the area was 0.022 mm2. Simulated results demonstrated that our proposed ROSC in a 65-nm CMOS process generates 32.5-kHz clock frequency and achieves ultra-low power dissipation of 271 nW. The temperature and voltage dependences of the oscillation frequency were 138ppm/ºC and 13.9ppm/mV, respectively. Monte Carlo statistical simulations showed that the mean, standard deviation, and the coefficient of variation are 32.3 kHz, 0.6 kHz, and 1.9%, respectively. | |
| Keyword | (in Japanese) | (See Japanese page) |
| (in English) | Real-time clock (RTC) / ultra-low power / resistor-less / area efficient / relaxation oscillator / PVT tolerant / / | |
| Reference Info. | IEICE Tech. Rep., vol. 117, no. 344, ICD2017-86, pp. 141-141, Dec. 2017. | |
| Paper # | ICD2017-86 | |
| Date of Issue | 2017-12-07 (CAS, 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 | CAS2017-98 ICD2017-86 CPSY2017-95 Link to ES Tech. Rep. Archives: ICD2017-86 |
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| Conference Information | |
| Committee | ICD CPSY CAS |
| Conference Date | 2017-12-14 - 2017-12-15 |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | Art Hotel Ishigakijima |
| Topics (in Japanese) | (See Japanese page) |
| Topics (in English) | |
| Paper Information | |
| Registration To | ICD |
| Conference Code | 2017-12-ICD-CPSY-CAS |
| Language | Japanese |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | Maximum power estimator for ultra-low power energy harvesters |
| Sub Title (in English) | |
| Keyword(1) | Real-time clock (RTC) |
| Keyword(2) | ultra-low power |
| Keyword(3) | resistor-less |
| Keyword(4) | area efficient |
| Keyword(5) | relaxation oscillator |
| Keyword(6) | PVT tolerant |
| Keyword(7) | |
| Keyword(8) | |
| 1st Author's Name | Hiroki Asano |
| 1st Author's Affiliation | Kobe University (Kobe Univ.) |
| 2nd Author's Name | Tetsuya Hirose |
| 2nd Author's Affiliation | Kobe University (Kobe Univ.) |
| 3rd Author's Name | Toshihiro Ozaki |
| 3rd Author's Affiliation | Kobe University (Kobe Univ.) |
| 4th Author's Name | Nobutaka Kuroki |
| 4th Author's Affiliation | Kobe University (Kobe Univ.) |
| 5th Author's Name | Masahiro Numa |
| 5th Author's Affiliation | Kobe University (Kobe Univ.) |
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| Speaker | Author-1 |
| Date Time | 2017-12-14 15:10:00 |
| Presentation Time | 120 minutes |
| Registration for | ICD |
| Paper # | CAS2017-98, ICD2017-86, CPSY2017-95 |
| Volume (vol) | vol.117 |
| Number (no) | no.343(CAS), no.344(ICD), no.345(CPSY) |
| Page | p.141 |
| #Pages | 1 |
| Date of Issue | 2017-12-07 (CAS, ICD, CPSY) |
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