Print Email Facebook Twitter A ±25A Versatile Shunt-Based Current Sensor with 10kHz Bandwidth and ±0.25% Gain Error from -40°C to 85°C Using 2-Current Calibration Title A ±25A Versatile Shunt-Based Current Sensor with 10kHz Bandwidth and ±0.25% Gain Error from -40°C to 85°C Using 2-Current Calibration Author Tang, Z. (TU Delft Electronic Instrumentation) Brito Zamparette, R.L. (TU Delft Electronic Instrumentation) Furuta, Yoshikazu (MIRISE Technologies) Nezuka, Tomohiro (MIRISE Technologies) Makinwa, K.A.A. (TU Delft Microelectronics) Contributor Fujino, Laura C. (editor) Department Microelectronics Date 2022 Abstract Accurate current sensing is critical in many industrial applications, such as battery management and motor control. Precise shunt-based current sensors have been reported with gain errors of less than 1% over the industrial temperature range (-40°C to 85°C) [1]–[4]. However, since they are intended for coulomb counting, their bandwidth is limited to a few tens of Hz, making them unsuitable for battery impedance or motor-current sensing. This paper presents a current sensor with a wide (10kHz) bandwidth and a tunable temperature compensation scheme (TCS), which allows it to be flexibly used with different types of shunts while maintaining high accuracy. A low-cost room-temperature calibration scheme is proposed to optimize gain flatness over temperature by exploiting the shunt's self-heating at large currents. Over the industrial temperature range and a ±25A current range, it achieves state-of-the-art gain error (±0.25%) with both low-cost PCB and stable metal-alloy shunts. To reference this document use: http://resolver.tudelft.nl/uuid:0e022d0d-5ea0-48b3-8757-863122145520 DOI https://doi.org/10.1109/ISSCC42614.2022.9731777 Publisher IEEE, Danvers Embargo date 2022-09-17 ISBN 978-1-6654-2801-9 Source 2022 IEEE International Solid- State Circuits Conference (ISSCC): Digest of technical papers Event 2022 IEEE International Solid- State Circuits Conference (ISSCC), 2022-02-20 → 2022-02-26, Online at San Francisco, United States Series Digest of Technical Papers - IEEE International Solid-State Circuits Conference, 0193-6530, 2022-February Bibliographical note Green Open Access added to TU Delft Institutional Repository 'You share, we take care!' - Taverne project https://www.openaccess.nl/en/you-share-we-take-care Otherwise as indicated in the copyright section: the publisher is the copyright holder of this work and the author uses the Dutch legislation to make this work public. Part of collection Institutional Repository Document type conference paper Rights © 2022 Z. Tang, R.L. Brito Zamparette, Yoshikazu Furuta, Tomohiro Nezuka, K.A.A. Makinwa Files PDF A_25A_Versatile_Shunt_Bas ... ion_1_.pdf 1.1 MB Close viewer /islandora/object/uuid:0e022d0d-5ea0-48b3-8757-863122145520/datastream/OBJ/view