A high voltage multiplexer with rail to rail output swing for battery management system applications

Xinchang Li; Dawei Xu; Hongyue Zhu; Zhuojun Chen; Zhiqiang Yang; Xinhong Cheng; Yuehui Yu; Wai Tung Ng

doi:10.1587/elex.13.20161144

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A high voltage multiplexer with rail to rail output swing for battery management system applications

Xinchang Li, Dawei Xu, Hongyue Zhu, Zhuojun Chen, Zhiqiang Yang, Xinhong Cheng, Yuehui Yu, Wai Tung Ng

Author information

Xinchang Li
Graduate University of Chinese Academy of Sciences
State Key Laboratory of Functional Materials for Informatics, Shanghai Institute of Microsystem and Information Technology, Chinese Academy of Sciences
Dawei Xu
Graduate University of Chinese Academy of Sciences
State Key Laboratory of Functional Materials for Informatics, Shanghai Institute of Microsystem and Information Technology, Chinese Academy of Sciences
Hongyue Zhu
Graduate University of Chinese Academy of Sciences
State Key Laboratory of Functional Materials for Informatics, Shanghai Institute of Microsystem and Information Technology, Chinese Academy of Sciences
Zhuojun Chen
Graduate University of Chinese Academy of Sciences
State Key Laboratory of Functional Materials for Informatics, Shanghai Institute of Microsystem and Information Technology, Chinese Academy of Sciences
Zhiqiang Yang
Graduate University of Chinese Academy of Sciences
State Key Laboratory of Functional Materials for Informatics, Shanghai Institute of Microsystem and Information Technology, Chinese Academy of Sciences
Xinhong Cheng
Graduate University of Chinese Academy of Sciences
State Key Laboratory of Functional Materials for Informatics, Shanghai Institute of Microsystem and Information Technology, Chinese Academy of Sciences
Yuehui Yu
Graduate University of Chinese Academy of Sciences
State Key Laboratory of Functional Materials for Informatics, Shanghai Institute of Microsystem and Information Technology, Chinese Academy of Sciences
Wai Tung Ng
Edward S. Rogers Sr. Department of Electrical and Computer Engineering, University of Toronto

Keywords: multiplexer, switch, rail-to-rail output, high voltage, back to back protection

JOURNAL FREE ACCESS

2017 Volume 14 Issue 1 Pages 20161144

DOI https://doi.org/10.1587/elex.13.20161144

Browse “Advance online publication” version

EICE Electron. Express : Vol. 15 (2018) No. 13 pp.20188006-20188006

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Abstract

This work presents a dual channel 8:1 high voltage (HV) multiplexer (MUX) with a 3-to-8 decoder and 16 HV switches for Battery Management Systems (BMS). Each HV switch consists of two pairs of sub-switches using n- and p-channel drain extended MOS devices with back to back body diode protection, respectively. The two pairs of sub-switches, connected in parallel and with dedicated gate drive signals, allow the HV MUX to have a rail-to-rail output swing and improved sampling accuracy. An experimental prototype is implemented using a 0.35 µm 60 V BCD process. The measurement results reveal that the maximum error of the HV MUX is ±0.2 mV, and the power dissipation is below 2.3 mW with a chip area of only 1.9 × 0.57 mm².

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