A High Voltage Bootstrapped Switch based SAR ADC for Battery Management System

Hits:

First Author:Y. Yang

Correspondence Author:C. Wang*

Co-author:, Z. Li, C. Chen, and

Journal:IEEE International Conference on Integrated Circuits, Technologies and Applications (ICTA 2023)

Included Journals:EI

Discipline:Engineering

First-Level Discipline:Electronic Science And Technology

Document Type:C

DOI number:10.1109/ICTA60488.2023.10364279

Date of Publication:2023-10-27

Abstract:This paper presents a novel high voltage bootstrapped switch (HVBS) that can sample a 4.5V input signal using a triple-well 65nm CMOS process without any drain-extended NMOS. Based on this HVBS, we designed a 12-bit SuccessiveApproximation-Register (SAR) analog-to-digital conversion (ADC) with configurable input range that can convert input signals with a range of 1.2V and 4.5V. This ADC achieves a Signal-to-Noiseand-Distortion Ratio (SNDR) of 65.2dB with an input range of 4.5V operating at 500kS/s and 1.2V supply, making it suitable for battery management systems (BMS).