Scalable automotive HEV/EV 6-s to 96-s lithium ion cell supervision demonstrator reference design
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Key Document


This reference design is a small-sized cell supervision demonstrator design for a centralized battery management system (BMS). Its configurable capacitive isolation daisy chain solution enables monitoring and protecting cells ranging from 6-series to 96-series, which allows its use in BMS systems ranging from 24 V to 400 V . In hybrid or electric vehicles (HEV/EVs), a high voltage lithium ion battery stores the energy required for traction and housekeeping. The lithium ion cells in the battery must be monitored while charging and discharging. This design provides a solution for monitoring lithium ion cell voltages accurately and communicating the data externally via various interfaces such as CAN and bqStudio.

  • Scalable cell supervision circuits from 6s to 96s
  • Accurate leakage current estimation
  • Estimated isolation resistance
  • Accurate high-voltage measurement
  • Scalable to multiple batteries

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TI Devices (6)

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Part Number Name Product Family Sample & Buy Design Kits & Evaluation Modules
BQ79606A-Q1  6-S automotive precision battery monitor, balancer and integrated protector with ASIL-D compliance  Battery management ICs  Sample & Buy View Design Kits & Evaluation Modules
SN6501-Q1  Automotive low-noise, 350-mA, 410-kHz transformer driver for isolated power supplies  Power for signal isolators  Sample & Buy View Design Kits & Evaluation Modules
TCAN1042HGV-Q1  Automotive Fault Protected CAN Transceiver With Flexible Data-Rate  Interface  Sample & Buy View Design Kits & Evaluation Modules
TMS570LS0432  16/32 Bit RISC Flash MCU, Arm Cortex-R4, Auto Q-100  Microcontrollers (MCUs)  Sample & Buy View Design Kits & Evaluation Modules
TPS57160-Q1  Automotive 3.5V to 60V, 1.5A Buck Converter with Eco-Mode™  Step-down (buck) regulators  Sample & Buy View Design Kits & Evaluation Modules
TPS65381A-Q1  Multi-rail power supply (PMIC) for microcontrollers in safety applications  Power management  Sample & Buy Not Available

CAD/CAE symbols

Part # Package | Pins CAD File (.bxl) STEP Model (.stp)
BQ79606A-Q1 Download
SN6501-Q1 Download
TCAN1042HGV-Q1 Download Download
Download Download
TMS570LS0432 Download -
TPS57160-Q1 Download Download
Download Download
TPS65381A-Q1 Download Download

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Technical documentation

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User guide (1)
Title Type Size (KB) Date
PDF 1716 30 Apr 2019
Design files (6)
Title Type Size (KB) Date
ZIP 1526 31 Oct 2018
ZIP 4707 31 Oct 2018
PDF 9954 31 Oct 2018
PDF 2126 31 Oct 2018
PDF 162 31 Oct 2018
PDF 4294 31 Oct 2018

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