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Product details

Parameters

Cell chemistry Li-Ion/Li-Polymer Number of series cells 1-2 Cells Communication interface I2C Battery capacity (Min) (mAh) 100 Battery capacity (Max) (mAh) 14000 Implementation Pack External capacity indication None Features Cell Balancing, Impedance Track™ algorithm, Integrated Protector, SHA-1 Authentication Operating temperature range (C) -40 to 85 Cell balancing External, Internal open-in-new Find other Battery fuel gauges

Package | Pins | Size

VSON (DRZ) 12 10 mm² 4 x 2.5 open-in-new Find other Battery fuel gauges

Features

  • Autonomous battery charging control, using a dedicated MASTER mode I2C interface
  • Cell balancing with an internal bypass to optimize battery health
  • A high-side protection N-CH FET drive enables serial bus communication during fault conditions
  • Programmable protection levels for voltage, current, and temperature
  • Analog front-end with two independent ADCs
    • Support for simultaneous current and voltage sampling
    • High-accuracy coulomb counter with input offset error < 1 µV (typical)
  • Supports down to 1-mΩ current sense resistor while capable of 1-mA current measurement
  • Supports battery trip point (BTP) function for Windows integration
  • SHA-1 authentication responder for increased battery pack security
  • 400-kHz I2C bus communications interface for high-speed programming and data access
  • Compact 12-pin VSON package (DRZ)
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Description

The Texas Instruments BQ28Z610 device is a highly integrated, accurate, 1-series to 2-series cell gas gauge and protection solution, enabling autonomous charger control and cell balancing.

The BQ28Z610 device enables autonomous charge control through Master Mode I2C broadcasts of charging current and voltage information, eliminating software overhead that is typically incurred by the system’s host controller.

The BQ28Z610 device provides a fully integrated pack-based solution with a flash programmable custom reduced instruction-set CPU (RISC), safety protection, and authentication for 1-series to 2-series cell Li-ion and Li-polymer battery packs.

The BQ28Z610 gas gauge communicates through an I2C compatible interface and combines an ultra-low-power, high-speed TI BQBMP processor, high-accuracy analog measurement capabilities, integrated flash memory, an array of peripheral and communication ports, an N-CH FET drive, and a SHA-1 Authentication transform responder into a complete, high-performance battery management solution.

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Technical documentation

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Type Title Date
* Data sheet BQ28Z610 Impedance Track™ Gas Gauge and Protection Solution for 1-Series to 2-Series Cell Li-Ion Battery Packs datasheet (Rev. D) Jun. 03, 2021
* User guide BQ28Z610 Technical Reference Manual (Rev. D) Jan. 14, 2020
Application note Simple Guide to Chemical ID Selection Tool (GPC) (Rev. A) Jun. 05, 2018
Application note Gauge Communication Jan. 12, 2017
Technical article How to choose a multicell gauge Dec. 16, 2016
Application note How to complete a successful learning cycle for the bq28z610/bq78z100 Jun. 23, 2016
Technical article Design a battery fuel gauge for 2S battery packs Mar. 12, 2016
Technical article A complete low-voltage backup battery solution for eCall systems Mar. 05, 2016
User guide bq28z610EVM 1- to 2-Series Li-ion Battery Pack Manager Evaluation Module Dec. 04, 2015

Design & development

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

Hardware development

EVALUATION BOARD Download
document-generic User guide
149
Description

The bq28z610 EVM evaluation module (EVM) is a complete evaluation system for the bq28z610 or bq294502 battery management system. The EVM includes one bq28z610 and bq294502 circuit module and a link to Windows™ based PC software. The circuit module includes one bq28z610  integrated circuit (...)

Features
  • Complete evaluation system for the bq78z100EVM 1s-2s Battery Pack Manager Evaluation Module and bq294502 independent overvoltage protection IC.
  • Populated circuit module for quick setup.
  • Software that allows data logging for system analysis.

Software development

APPLICATION SOFTWARE & FRAMEWORK Download
Battery Management Studio (bqStudio) Software
BQSTUDIO Battery Management Studio (bqStudio) offers a full suite of robust tools to assist with the process of evaluating, designing with, configuring, testing, or otherwise utilizing TI Battery management products. This includes features that provide full access to registers and data memory including (...)
Features
  • Real-time Gauge Dashboard for monitoring basic registers
  • Full register access and logging
  • Full data memory access and logging
  • Product configuration and monitoring tools
  • Import and export of product configurations
  • Calibration and test automation
  • Export of FS files for the target production environment 
SUPPORT SOFTWARE Download
SLUC599B.ZIP (4179 KB)

Design tools & simulation

CALCULATION TOOL Download
document-generic User guide

Reference designs

REFERENCE DESIGNS Download
2-cell boost charge system reference design with 5-V USB
PMP40496 — This 5-V USB, 2-cell battery boost charger reference design includes a charger system and a 2-cell battery holder with a gauge that can be connected by a cable or work independently. The key components of the charger system include the BQ25883 boost charger, TUSB320LAI Type-C CC logic, MSP430FR2433 (...)
document-generic Schematic document-generic User guide
REFERENCE DESIGNS Download
Automotive eCall Power Supply Reference Design with Low Intermediate Voltage
PMP9769 This reference design includes a complete power management solution for a standalone emergency call (eCall) system in an automotive environment. The circuit is supplied directly from the car battery rail. It also manages a backup battery to power the eCall system while the car battery rail is not (...)
document-generic Schematic document-generic User guide
REFERENCE DESIGNS Download
1 to 2s I2C Li-Ion Battery Pack Manager Reference Design
TIDA-00895 — The Texas Instruments bq28z610 device is a Battery Pack Manager that integrates gas gauging, and protection for complete autonomous operation of 1-series to 2-series cell Li-Ion and Li-Polymer battery packs. The architecture enables communication between the fuel gauging processor and an internal (...)
document-generic Schematic document-generic User guide

CAD/CAE symbols

Package Pins Download
SON (DRZ) 12 View options

Ordering & quality

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  • Lead finish/Ball material
  • MSL rating/Peak reflow
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  • Qualification summary
  • Ongoing reliability monitoring

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