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Texas Instruments bq79716b-Q1 Automotive 16S Battery Monitor

Texas Instruments bq79716b-Q1 Automotive 16S Battery Monitor provides high-accuracy cell voltage measurements for up to 16S battery modules in battery management systems (BMS) for xEV/EV applications. The monitor offers various channel options within the same package type, ensuring pin-to-pin compatibility and facilitating high reuse of established software and hardware spanning multiple platforms.

The TI bq79716b-Q1 Battery Monitor features a state-of-the-art ADC architecture/measurement system that meets stringent automotive standards and safety requirements. The battery monitor is developed for centralized or distributed architectures in xEV powertrains with the daisy-chain isolated by a transformer (or a capacitor).

Features

  • AEC-Q100 qualified with the following results:
    • Device temperature grade 1 : -40° to +125°C ambient operating temperature range
    • Device HBM ESD classification level 2
    • Device CDM ESD classification level C1
  • Functional Safety-Compliant
    • Documentation to aid ISO 26262 system design
    • Systematic capability up to ASIL D
    • Hardware capability up to ASIL D
  • Measure nine to 16 batteries in series per device, stackable up to 64 devices
  • Dedicated ADC with typical ±1mV accuracy
  • Cell voltage and battery pack current measurement synchronized to 64µs
  • Support limp home mode with full redundancy
  • Integrated post-ADC configurable digital low-pass filters
  • Supports busbar without affecting measurement accuracy
  • 12 GPIOs for temp sensor/analog/digital/l2C controller/SPI controller
  • Internal cell balancing
    • Balancing at 300mA
    • User-controlled PWM adjustment cell balancing current
    • Built-in balancing thermal management with automatic pause and resume control
  • Robust daisy chain communication and support
  • 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
  • Low power mode current < 6µA
  • Compatible with bq79600-Q1 with SPV/UART interface

Applications

  • Battery Management System (BMS) in hybrid and electric powertrain systems
  • Energy storage battery packs with Battery Management Systems

Simplified System Diagram

Block Diagram - Texas Instruments bq79716b-Q1 Automotive 16S Battery Monitor
Published: 2025-12-18 | Updated: 2026-01-11