A ±100A Auto-Calibration Current Sensor with 80V Pulse-Width Modulation Attenuation and 0.15% Gain Error

Yu Teng Liang, Shi Jun Zeng, Yu Tse Shih, Ke Horng Chen, Kuo Lin Zheng, Chih Chen Li

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

Abstract

The proposed in-line current sensor uses a small sense resistor Rs of 0.1m Ω to achieve high efficiency. Besides, for high accuracy, automatic voltage calibration and automatic temperature calibration correct for changes caused by voltage changes and temperature changes across the sensing resistor. Furthermore, the proposed capacitively coupled chopper instrumentation amplifier (CCIA) can withstand input voltages up to 80V through a high-voltage (HV) chopper and handle large common-mode transients (20V/ns) through enhanced pulse-width-modulation attenuation (EP A) stage. Experimental results show the gain error is reduced to within ±0.15% and further reduce input noise density to 12n V/√Hz.

Original languageEnglish
Title of host publication2024 IEEE Symposium on VLSI Technology and Circuits, VLSI Technology and Circuits 2024
PublisherInstitute of Electrical and Electronics Engineers Inc.
ISBN (Electronic)9798350361469
DOIs
StatePublished - 2024
Event2024 IEEE Symposium on VLSI Technology and Circuits, VLSI Technology and Circuits 2024 - Honolulu, United States
Duration: 16 Jun 202420 Jun 2024

Publication series

NameDigest of Technical Papers - Symposium on VLSI Technology
ISSN (Print)0743-1562

Conference

Conference2024 IEEE Symposium on VLSI Technology and Circuits, VLSI Technology and Circuits 2024
Country/TerritoryUnited States
CityHonolulu
Period16/06/2420/06/24

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