Oo Htet, K., Zhao, J., Ghannam, R. and Heidari, H. (2019) Energy-Efficient Start-up Power Management for Batteryless Biomedical Implant Devices. In: 25th IEEE International Conference on Electronics, Circuits and Systems (ICECS), Bordeaux, France, 9-12 Dec 2018, pp. 597-600. ISBN 9781538695623 (doi: 10.1109/ICECS.2018.8617874)
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173520.pdf - Accepted Version 720kB |
Abstract
This paper presents a solar energy harvesting power management using the high-efficiency switched capacitor DC-DC converter for biomedical implant applications. By employing an on-chip start-up circuit with parallel connected Photovoltaic (PV) cells, a small efficiency improvement can be obtained when compared with the traditional stacked photodiode methodology to boost the harvested voltage while preserving a single-chip solution. The PV cells have been optimised in the PC1D software and the optimal parameters modelled in the Cadence environment. A cross-coupled circuit with level shifter loop is also proposed to improve the overall step up voltage output and hybrid converter increases the start-up speed by 23.5%. The proposed system is implemented in a standard 0.18-μm CMOS technology. Simulation results show that the 4-phase start-up and cross coupled with level-shifter can achieve a maximum efficiency of 60%.
| Item Type: | Conference Proceedings |
|---|---|
| Status: | Published |
| Refereed: | Yes |
| Glasgow Author(s) Enlighten ID: | Ghannam, Professor Rami and Heidari, Professor Hadi and Oo Htet, Kaung and Zhao, Mr Jinwei |
| Authors: | Oo Htet, K., Zhao, J., Ghannam, R., and Heidari, H. |
| College/School: | College of Science and Engineering > School of Engineering College of Science and Engineering > School of Engineering > Electronics and Nanoscale Engineering |
| ISBN: | 9781538695623 |
| Published Online: | 21 January 2019 |
| Copyright Holders: | Copyright © 2018 IEEE |
| First Published: | First published in 25th IEEE International Conference on Electronics, Circuits and Systems (ICECS): 597-600 |
| Publisher Policy: | Reproduced in accordance with the publisher copyright policy |
| Related URLs: |
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