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BQ79616

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16-S precision battery monitor, balancer and integrated protector with stacking interface

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Data sheet

BQ79616

ACTIVE
Data sheet Order now

Product details

Rating Catalog Number of series cells (max) 16 Number of series cells (min) 6 Features Cell balancing, Integrated ADC, Multi-cell support, Open-wire detection, Overtemperature protection, Overvoltage protection, Separate MCU requirement, Stackable (built-in interface), Temperature sensing, Undertemperature protection, Undervoltage protection Vin (max) (V) 80 Communication interface Daisy chain, SPI controller, UART Device type Cell monitor and balancer Operating temperature range (°C) -40 to 125 Battery overvoltage protection (min) (V) 2.7 Battery overvoltage protection (max) (V) 4.5 Operating current (typ) (µA) 9000
Rating Catalog Number of series cells (max) 16 Number of series cells (min) 6 Features Cell balancing, Integrated ADC, Multi-cell support, Open-wire detection, Overtemperature protection, Overvoltage protection, Separate MCU requirement, Stackable (built-in interface), Temperature sensing, Undertemperature protection, Undervoltage protection Vin (max) (V) 80 Communication interface Daisy chain, SPI controller, UART Device type Cell monitor and balancer Operating temperature range (°C) -40 to 125 Battery overvoltage protection (min) (V) 2.7 Battery overvoltage protection (max) (V) 4.5 Operating current (typ) (µA) 9000
HTQFP (PAP) 64 144 mm² (12 mm × 12 mm)
  • ±1.5mV ADC accuracy
  • Built-in redundancy path for voltage and temperature diagnostics
  • Highly accurate cell voltage measurements within 128µs for all cell channels
  • Integrated post-ADC configurable digital low-pass filters
  • Bus bar connection and measurement support
  • Built-in host-controlled hardware reset to emulate POR-like device reset
  • Supports internal cell balancing
    • Balancing current at 240mA
    • Built-in balancing thermal management with automatic pause and resume control
  • Isolated differential daisy chain communication with optional ring architecture
  • Embedded fault signal and heartbeat through communication line
  • UART/SPI host interface/communication bridge device BQ79600
  • Built-in SPI controller
  • ±1.5mV ADC accuracy
  • Built-in redundancy path for voltage and temperature diagnostics
  • Highly accurate cell voltage measurements within 128µs for all cell channels
  • Integrated post-ADC configurable digital low-pass filters
  • Bus bar connection and measurement support
  • Built-in host-controlled hardware reset to emulate POR-like device reset
  • Supports internal cell balancing
    • Balancing current at 240mA
    • Built-in balancing thermal management with automatic pause and resume control
  • Isolated differential daisy chain communication with optional ring architecture
  • Embedded fault signal and heartbeat through communication line
  • UART/SPI host interface/communication bridge device BQ79600
  • Built-in SPI controller

The BQ79616 device provides high-accuracy cell voltage measurements in less than 200µs for 16-series battery modules in high-voltage battery management systems in HEV/EV. The monitor offers different channel options in the same package type, providing pin-to-pin compatibility and supporting high reuse of the established software and hardware across any platform. The integrated front-end filters enable the system to implement with simple, low voltage rating, differential RC filters on the cell input channels. The integrated, post-ADC, low-pass filters enable filtered, DC-like, voltage measurements for better state of charge (SOC) calculation. This device supports autonomous internal cell balancing with temperature monitoring to auto-pause and resume balancing to avoid an overtemperature condition.

The BQ79616 device provides high-accuracy cell voltage measurements in less than 200µs for 16-series battery modules in high-voltage battery management systems in HEV/EV. The monitor offers different channel options in the same package type, providing pin-to-pin compatibility and supporting high reuse of the established software and hardware across any platform. The integrated front-end filters enable the system to implement with simple, low voltage rating, differential RC filters on the cell input channels. The integrated, post-ADC, low-pass filters enable filtered, DC-like, voltage measurements for better state of charge (SOC) calculation. This device supports autonomous internal cell balancing with temperature monitoring to auto-pause and resume balancing to avoid an overtemperature condition.
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Technical documentation

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Top documentation Type Title Format options Date
* Data sheet BQ79616 16-Series Battery Monitor, Balancer, and Integrated Hardware Protector datasheet (Rev. A) PDF | HTML Jun 11, 2026
Application note BQ79616 Control Based on MSPM0 Through UART to CAN PDF | HTML Dec 16, 2024
Technical article 3 major design challenges to solve in battery energy storage systems PDF | HTML Jan 30, 2024
Application note BQ79616-Q1 Daisy Chain Communications PDF | HTML Oct 26, 2023
Application brief Scaling accurate battery management designs across energy storage systems PDF | HTML Oct 20, 2023
Application note BQ79616-Q1 Software Design Reference (Rev. B) PDF | HTML Aug 21, 2023
Application brief Expanding Functionality of Cell Supervision Unit in Battery Management Systems PDF | HTML Sep 14, 2021
User guide BQ79616-Q1 and BQ75614-Q1 Graphical User Interface (GUI) User's Guide Dec 14, 2020

Design & development

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Evaluation board

BQ79616EVM-021 — BQ79616 evaluation module for 16-S precision battery monitor, balancer and integrated protector

The BQ79616 evaluation module (EVM)  is a development platformfor the BQ79616-Q1. BQ79616-Q1 provides high accuracy and channel measurements for six to 16 battery cells. With the inclusion of a daisy-chain communication port, BQ79616-Q1 is stackable (up to 35 devices) to support (...)

User guide: PDF | HTML
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Reference design

TIDA-010271 — Stackable battery management unit reference design for energy storage systems

This is a full cell-temperature sensing and high cell voltage accuracy Lithium-ion (Li-ion), lithium iron phosphate (LiFePO4) battery pack (32s) reference design. The design monitors each cell voltage, cell temperature and protects the battery pack to secure safe use. This design uses onboard and (...)
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HTQFP (PAP) 64 Ultra Librarian
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