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BQ79712SB-Q1

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Automotive 12-S battery monitor and balancer with integrated protector and LDO FET

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Data sheet

BQ79712SB-Q1

ACTIVE
Data sheet Order now

Product details

Rating Automotive Operating temperature range (°C) to TI functional safety category Functional Safety-Compliant
Rating Automotive Operating temperature range (°C) to TI functional safety category Functional Safety-Compliant
HTQFP (PHP) 48 81 mm² 9 x 9
  • AEC-Q100 qualified with –40°C to +125°C ambient temperature range
  • Functional Safety Compliant
    • Documentation to aid ISO 26262 system design
    • Systematic capability up to ASIL D
    • Hardware capability up to ASIL D
  • Measure from 9 to 12 cells in series per device, stackable up to 64 devices

  • Dedicated ADC per cell

  • Cell voltage and battery pack current measurement synchronized to 64us
  • Support limp home mode with full redundancy
  • Integrated post-ADC configurable digital low-pass filters
  • Supports bus bar without affecting measurement accuracy
  • 7 GPIOs for temp sensor/analog/digital/I2C controller/SPI controller
  • Internal cell balancing
    • Balancing at 200mA (BQ79712SB); 400mA (BQ79712PB)
    • User controlled PWM adjusted balancing current
    • Built-in balancing thermal management with automatic pause and resume control
  • Robust daisy chain communication and support for ring architecture
  • Hardware reset by host simulates POR-like event without battery removal
  • Support transformer and capacitive isolation
  • On chip memory for one time custom programming
  • Shutdown current 6uA
  • Compatible with BQ79600-Q1 with SPI/UART interface
  • AEC-Q100 qualified with –40°C to +125°C ambient temperature range
  • Functional Safety Compliant
    • Documentation to aid ISO 26262 system design
    • Systematic capability up to ASIL D
    • Hardware capability up to ASIL D
  • Measure from 9 to 12 cells in series per device, stackable up to 64 devices

  • Dedicated ADC per cell

  • Cell voltage and battery pack current measurement synchronized to 64us
  • Support limp home mode with full redundancy
  • Integrated post-ADC configurable digital low-pass filters
  • Supports bus bar without affecting measurement accuracy
  • 7 GPIOs for temp sensor/analog/digital/I2C controller/SPI controller
  • Internal cell balancing
    • Balancing at 200mA (BQ79712SB); 400mA (BQ79712PB)
    • User controlled PWM adjusted balancing current
    • Built-in balancing thermal management with automatic pause and resume control
  • Robust daisy chain communication and support for ring architecture
  • Hardware reset by host simulates POR-like event without battery removal
  • Support transformer and capacitive isolation
  • On chip memory for one time custom programming
  • Shutdown current 6uA
  • Compatible with BQ79600-Q1 with SPI/UART interface

The BQ79712SB-Q1 and BQ79712PB-Q1 provide high-accuracy cell voltage measurements for 12S battery modules in high-voltage battery management systems in xEV/EV. The BQ797xx-Q1 family of monitors offers different channel options and supports high reuse of the established software and hardware across any platform. This device has advanced ADC architecture and measurement systems, meeting stringent automotive standards and safety requirements. With the daisy chain isolated by transformer (or capacitor), the device is designed for centralized or distributed architectures in xEV powertrain.

The BQ79712SB-Q1 and BQ79712PB-Q1 provide high-accuracy cell voltage measurements for 12S battery modules in high-voltage battery management systems in xEV/EV. The BQ797xx-Q1 family of monitors offers different channel options and supports high reuse of the established software and hardware across any platform. This device has advanced ADC architecture and measurement systems, meeting stringent automotive standards and safety requirements. With the daisy chain isolated by transformer (or capacitor), the device is designed for centralized or distributed architectures in xEV powertrain.
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* Data sheet BQ79712B-Q1 Functional Safety-Compliant Automotive Battery Monitors datasheet PDF | HTML 08 Jan 2026

Design & development

For additional terms or required resources, click any title below to view the detail page where available.

Driver or library

BQ79712XB-Q1-DESIGN — Secure resources folder of BQ79712PB-Q1 and BQ79712SB-Q1

Secure resources folder of BQ79712PB-Q1 and BQ79712SB-Q1
Supported products & hardware

Supported products & hardware

Products
Battery monitors & balancers
  • BQ79712SB-Q1 — Automotive 12-S battery monitor and balancer with integrated protector and LDO FET
Request
Driver or library

BQ7971XB-Q1-DESIGN — BQ7971xB-Q1 Secure Resource folder

BQ7971xB-Q1 secure resources folder including datasheet, application notes, EVM userguides and other technical resources related to BQ7971xB-Q1
Supported products & hardware

Supported products & hardware

Products
Battery monitors & balancers
  • BQ79712SB-Q1 — Automotive 12-S battery monitor and balancer with integrated protector and LDO FET
  • BQ79716B-Q1 — 16-S automotive precision battery monitor, balancer and integrated protector with ASIL-D compliance
  • BQ79718B-Q1 — Automotive, 18-S precise battery monitor, balancer and integrated protector with ASIL-D compliance
  • BQ79758B-Q1 — Automotive, 18-S ASIL-D compliant precise battery monitor and balancer with current sense
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HTQFP (PHP) 48 Ultra Librarian
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