Abstract
An energy efficient State-of-Charge (SOC) indication algorithm and integrated system for small IoT batteries are introduced in this paper. The system is implemented in a 180-nm CMOS technology. Based on a key finding that small Li-ion batteries exhibit a linear dependence between battery voltage and load current, we propose an instantaneous linear extrapolation (ILE) algorithm and circuit allowing on-demand estimation of SOC. Power consumption is 42nW and maximum SOC indication error is 1.7%.
Original language | English |
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Title of host publication | 2017 Symposium on VLSI Circuits, VLSI Circuits 2017 |
Publisher | Institute of Electrical and Electronics Engineers Inc. |
Pages | C206-C207 |
ISBN (Electronic) | 9784863486065 |
DOIs | |
Publication status | Published - 2017 Aug 10 |
Event | 31st Symposium on VLSI Circuits, VLSI Circuits 2017 - Kyoto, Japan Duration: 2017 Jun 5 → 2017 Jun 8 |
Other
Other | 31st Symposium on VLSI Circuits, VLSI Circuits 2017 |
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Country/Territory | Japan |
City | Kyoto |
Period | 17/6/5 → 17/6/8 |
ASJC Scopus subject areas
- Electronic, Optical and Magnetic Materials
- Electrical and Electronic Engineering