A fully integrated light-powering system with integrated CMOS photovoltaic cell for batteryless IoT devices

Po Han Chen, Chao Yi Huang, Hao Chung Cheng, Po Hung Chen

研究成果: Conference contribution同行評審

3 引文 斯高帕斯(Scopus)

摘要

This paper presents a fully integrated CMOS light-powering system, integrating CMOS photovoltaic cell and energy harvesting interface, for batteryless internet of things (IoT). The CMOS photovoltaic cell employs deep N-well (DNW) based structure to improve the light-electric conversion efficiency. The energy harvesting interface utilizes a fully integrated two-stage switched-capacitor dc-dc converter to provide an appropriate output voltage for load circuits. It provides 1 V and 0.9-1.1 V output under light load and heavy load, respectively. The chip is designed and fabricated by 180-nm CMOS process, without using any off-chip components, except a storage capacitor for testing. The experimental results demonstrate that the proposed 1mm x 2mm fully integrated light-powering system can periodically provide 0.9 V to 1.1 V output voltage to power 1-mA loading circuit. The proposed interface achieves 70 percent peak-efficiency at 1 μA and higher than 60 percent efficiency over 0.5 μA to 2 μA loading currents.

原文English
主出版物標題2019 26th IEEE International Conference on Electronics, Circuits and Systems, ICECS 2019
發行者Institute of Electrical and Electronics Engineers Inc.
頁面907-910
頁數4
ISBN(電子)9781728109961
DOIs
出版狀態Published - 11月 2019
事件26th IEEE International Conference on Electronics, Circuits and Systems, ICECS 2019 - Genoa, Italy
持續時間: 27 11月 201929 11月 2019

出版系列

名字2019 26th IEEE International Conference on Electronics, Circuits and Systems, ICECS 2019

Conference

Conference26th IEEE International Conference on Electronics, Circuits and Systems, ICECS 2019
國家/地區Italy
城市Genoa
期間27/11/1929/11/19

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