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Product details

Parameters

Cell chemistry Li-Ion/Li-Polymer, LiFePO4 Number of series cells 2-4 Cells Communication interface SMBus Battery capacity (Min) (mAh) 100 Battery capacity (Max) (mAh) 29000 Implementation Pack, System External capacity indication LED Features Battery Management Unit, Cell Balancing, Integrated Protector, SHA-1 Authentication, Turbo Mode Operating temperature range (C) -40 to 85 Cell balancing External, Internal open-in-new Find other Battery fuel gauges

Package | Pins | Size

VQFN (RHB) 32 25 mm² 5 x 5 open-in-new Find other Battery fuel gauges

Features

  • Fully Integrated 2-Series to 4-Series Cell Li-Ion or Li-Polymer Battery Management Unit
  • Input Voltage Range on Pack+: 2.5 V to 25 V
  • Battery Charger Efficiency > 92%
  • Battery Charger Operation Range: 4 V to 25 V
  • Battery Charger, 1-MHz Synchronous Buck Controller for External NFETs
    • Soft Start to Limit In-Rush Current
    • Current Limit Protection for External Switches
    • Programmable Charging
      • Supports JEITA/Enhanced Charging Modes
  • Fuel Gauging
    • High Resolution 16-Bit Integrator for Coulomb Counter
    • ADC, 16-Bit for Precision V, I, and T Measurements with 16-Channel Multiplexer
    • Support for Simultaneous CC and ADC Sampling (Power Conversion)
    • Supports Two-Wire SMBus v2.0 Interface with Accelerated 400-kHz Programming Option
    • SHA-1 Hash Message Authentication Code (HMAC) Responder for Increased Battery Pack Security
      • Split Key (2 × 64) Stored in Secure Memory
    • Supports Field Updates
  • AFE Protection
    • Programmable Current Protection
      • Overcurrent in Discharge
      • Short-Circuit Current in Charge
      • Short-Circuit Current in Discharge
  • N-FET High-Side Protection FET Drive
  • Support for Four LEDs
  • Thermistor inputs for NTC
  • Compact 32-Pin QFN Package (RHB)
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Description

The Texas Instruments bq40z60 device is a Programmable Battery Management Unit that integrates battery charging control output, gas gauging, and protection for completely autonomous operation of 2-series to 4-series cell Li-Ion and Li-Polymer battery packs. The architecture enables internal communication between the fuel gauging processor and battery charger controller to optimize the charging profile based on the external load conditions and power path source management during load transients and adaptor current limitations in the system. The charging current efficiency is scalable for power transfer based on the external components, such as the NFETs, inductor, and sensing resistor.

The device provides an array of battery and system safety functions, including overcurrent in discharge, short circuit in charge, and short circuit in discharge protection for the battery, as well as FET protection for the N-CH FETs, internal AFE watchdog, and cell disconnection detection. Through firmware, the device can provide a larger array of protection features including overvoltage, undervoltage, overtemperature, and more.

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Similar but not functionally equivalent to the compared device:
BQ25710 ACTIVE SMBus battery Buck-boost charge controller with system power monitor & processor hot monitor This product is the recommended alternative charger to be used with the BQ40z50-R2.
BQ40Z50-R2 ACTIVE 1-4 series Li-ion battery pack manager supporting Turbo Mode 2.0 This is the recommended alternative gauge to be used instead of the BQ40z60.

Technical documentation

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Type Title Date
* Data sheet bq40z60 Programmable Battery Management Unit datasheet (Rev. D) Jan. 03, 2017
User guides bq40z60 Technical Reference Manual (Rev. D) Mar. 23, 2017
Application notes Turbo Mode 1.0 Setup Steps Dec. 13, 2016
Application notes SMBus Made Simple Nov. 09, 2016
Technical articles Get to know your battery pack: Part 1 Sep. 28, 2015
Technical articles Precision farming with flying farmers Sep. 03, 2015
Application notes bq40z60 Charging Voltage Compensation Jun. 29, 2015
Technical articles Rise of the Drones Jun. 24, 2015
Technical articles What would comprehensive battery management look like? Apr. 23, 2015
Application notes bq40zxx Manufacture, Production, and Calibration (Rev. A) Mar. 23, 2015

Design & development

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

Hardware development

EVALUATION BOARDS Download
document-generic User guide
$175.00
Description

BQ40z60EVM is a complete system useful for evaluating the functionality of the bq40z60 fuel gauge and charger. As described on the BQ40z60 product folder, this gauge is appropriate for applications powered by multi-cell battery systems. The EVM includes one bq40z60 circuit module and external (...)

Features
  • Populated circuit module for quick setup
  • Software allows data logging for system analysis
  • Complete evaluation system for the bq40z60 battery management/charger IC

Software development

APPLICATION SOFTWARE & FRAMEWORKS Download
Production tool for 4th generation multicell battery fuel (gas) gauges
BQPRODUCTION bqProduction offers a full suite of robust tools to assist with the process of configuring, calibrating, manufacturing and tracking printed circuit boards utilizing TI Battery Battery management products. This includes features that allow writing a golden image followed by different types of (...)
Features
  • Support for the EV2300 Works with Advanced bqMTester hardware
  • Control multiple stations from a single graphical user interface
  • Run up to 12 stations in parallel from a single computer
  • Uses industry standard Motorola srec format Golden image programmer
  • Calibration and test automation Unique Serial number (...)
APPLICATION SOFTWARE & FRAMEWORKS 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 
APPLICATION SOFTWARE & FRAMEWORKS Download
Gauging Parameter Calculator: Match chemistry for Impedance Track gauges
GPCCHEM GPC Chemistry ID matching for Impedance Track (IT) algorithm gas gauges (Find closest chemistry match) must be done before Optimizing room temperature or low temperature performance.

Gauging Parameter Calculator Chemistry ID matching for Impedance track gas gauges (GPCCHEM) is a math calculation and (...)

APPLICATION SOFTWARE & FRAMEWORKS Download
Gauging Parameter Calculator: Optimize room temperature performance for Impedance Track gauges
GPCRA0 Gauging Parameter Calculator – Optimize room temperature performance for Impedance track gas gauges (GPCRA0) / Golden GG Maker is a math calculation tool that helps the battery designer to refine the Impedance Track battery gauge parameters for a given battery profile. It provides optimized (...)
APPLICATION SOFTWARE & FRAMEWORKS Download
Gauging Parameter Calculator: Optimize room and low temp performance Impedance Track gauges
GPCRB Gauging Parameter Calculator – Optimize room and low temperature performance for Impedance track gas gauges (GPCRB) is a math calculation tool that helps the battery designer to refine the Impedance Track battery gauge parameters for a given battery profile. Depending on the input log file, it (...)
FIRMWARE Download
SLUC598.ZIP (4214 KB)
SUPPORT SOFTWARE Download
SLUC564FW.ZIP (2777 KB)

Reference designs

REFERENCE DESIGNS Download
Multi-Cell Battery Manager Unit with Integrated Charging, Gauging, Authentication and Protection
TIDA-00553 The Texas Instruments bq40z60 device is a Battery Pack Manager that integrates battery charging control output, gas gauging, and protection for completely autonomous operation of 2-series to 4-series cell Li-Ion and Li-Polymer battery packs. The architecture enables internal communication between (...)
document-generic Schematic document-generic User guide

CAD/CAE symbols

Package Pins Download
VQFN (RHB) 32 View options

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