A 42nJ/conversion on-demand state-of-charge indicator for miniature IoT Li-ion batteries

Junwon Jeong; Seokhyeon Jeong; Chulwoo Kim; Dennis Sylvester; David Blaauw

doi:10.1109/ASPDAC.2018.8297320

A 42nJ/conversion on-demand state-of-charge indicator for miniature IoT Li-ion batteries

Junwon Jeong, Seokhyeon Jeong, Chulwoo Kim, Dennis Sylvester, David Blaauw

School of Electrical Engineering

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

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	ASP-DAC 2018 - 23rd Asia and South Pacific Design Automation Conference, Proceedings
Publisher	Institute of Electrical and Electronics Engineers Inc.
Pages	281-282
Number of pages	2
Volume	2018-January
ISBN (Electronic)	9781509006021
DOIs	https://doi.org/10.1109/ASPDAC.2018.8297320
Publication status	Published - 2018 Feb 20
Event	23rd Asia and South Pacific Design Automation Conference, ASP-DAC 2018 - Jeju, Korea, Republic of Duration: 2018 Jan 22 → 2018 Jan 25

Other

Other	23rd Asia and South Pacific Design Automation Conference, ASP-DAC 2018
Country	Korea, Republic of
City	Jeju
Period	18/1/22 → 18/1/25

ASJC Scopus subject areas

Electrical and Electronic Engineering
Computer Science Applications
Computer Graphics and Computer-Aided Design

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Jeong, J., Jeong, S., Kim, C., Sylvester, D., & Blaauw, D. (2018). A 42nJ/conversion on-demand state-of-charge indicator for miniature IoT Li-ion batteries. In ASP-DAC 2018 - 23rd Asia and South Pacific Design Automation Conference, Proceedings (Vol. 2018-January, pp. 281-282). Institute of Electrical and Electronics Engineers Inc.. https://doi.org/10.1109/ASPDAC.2018.8297320

A 42nJ/conversion on-demand state-of-charge indicator for miniature IoT Li-ion batteries. / Jeong, Junwon; Jeong, Seokhyeon; Kim, Chulwoo; Sylvester, Dennis; Blaauw, David.

ASP-DAC 2018 - 23rd Asia and South Pacific Design Automation Conference, Proceedings. Vol. 2018-January Institute of Electrical and Electronics Engineers Inc., 2018. p. 281-282.

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

Jeong, J, Jeong, S, Kim, C, Sylvester, D & Blaauw, D 2018, A 42nJ/conversion on-demand state-of-charge indicator for miniature IoT Li-ion batteries. in ASP-DAC 2018 - 23rd Asia and South Pacific Design Automation Conference, Proceedings. vol. 2018-January, Institute of Electrical and Electronics Engineers Inc., pp. 281-282, 23rd Asia and South Pacific Design Automation Conference, ASP-DAC 2018, Jeju, Korea, Republic of, 18/1/22. https://doi.org/10.1109/ASPDAC.2018.8297320

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A 42nJ/conversion on-demand state-of-charge indicator for miniature IoT Li-ion batteries

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