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 |
|---|---|
| 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 |
|---|---|
| Country | Japan |
| City | Kyoto |
| Period | 17/6/5 → 17/6/8 |
ASJC Scopus subject areas
- Electronic, Optical and Magnetic Materials
- Electrical and Electronic Engineering
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Cite this
Jeong, J., Jeong, S., Kim, C., Sylvester, D., & Blaauw, D. (2017). A 42nJ/conversion on-demand state-of-charge indicator for miniature IoT Li-ion batteries. In 2017 Symposium on VLSI Circuits, VLSI Circuits 2017 (pp. C206-C207). [8008484] Institute of Electrical and Electronics Engineers Inc.. https://doi.org/10.23919/VLSIC.2017.8008484