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Companion CEDV Fuel Gauge Battery Management Controller for bq76940 Monitor Family

BQ78350 is not recommended for new designs
Although this product continues to be in production to support previous designs, we don't recommend it for new designs. Consider one of these alternates:
open-in-new Compare alternates
Drop-in replacement with upgraded functionality to the compared device
BQ78350-R1A ACTIVE CEDV li-ion gas gauge and battery management controller Functionally identical to BQ7830. Pre-loaded with latest R1 firmware (v1.04). Improves the robustness of the Shutdown routine (fif using the Shutdown command in their application)

Product details

Cell chemistry Li-Ion/Li-Polymer, LiFePO4 Number of series cells >4 Cells Communication interface I2C, SMBus Battery capacity (max) (mAh) 320000 Implementation Pack External capacity indication LCD, LED, SOC Features CEDV Operating temperature range (°C) -40 to 85 Cell balancing External, Internal Rating Catalog
Cell chemistry Li-Ion/Li-Polymer, LiFePO4 Number of series cells >4 Cells Communication interface I2C, SMBus Battery capacity (max) (mAh) 320000 Implementation Pack External capacity indication LCD, LED, SOC Features CEDV Operating temperature range (°C) -40 to 85 Cell balancing External, Internal Rating Catalog
TSSOP (DBT) 30 49.92 mm² 7.8 x 6.4
  • Compensated End-of-Discharge Voltage (CEDV) Gauging Algorithm
  • Supports SMBus Host Communication
  • Flexible Configuration for 3- to 5-Series (bq76920), 6- to 10-Series (bq76930),
    and 9- to 15-Series (bq76940) Li-Ion and LiFePO4 Batteries
  • Supports Battery Configurations up to 320 Ahr
  • Supports Charge and Discharge Current Reporting up to 320 A
  • External NTC Thermistor Support from Companion AFE
  • Full Array of Programmable Protection Features
    • Voltage
    • Current
    • Temperature
    • System Components
  • Lifetime Data Logging
  • Supports CC-CV Charging, Including Precharge, Charge Inhibit, and
    Charge Suspend
  • Offers an Optional Resistor Programmable SMBus Slave Address for
    up to Eight Different Bus Addresses
  • Drives up to a 5-Segment LED or LCD Display for State-Of-Charge
    Indication
  • Provides SHA-1 Authentication
  • Compensated End-of-Discharge Voltage (CEDV) Gauging Algorithm
  • Supports SMBus Host Communication
  • Flexible Configuration for 3- to 5-Series (bq76920), 6- to 10-Series (bq76930),
    and 9- to 15-Series (bq76940) Li-Ion and LiFePO4 Batteries
  • Supports Battery Configurations up to 320 Ahr
  • Supports Charge and Discharge Current Reporting up to 320 A
  • External NTC Thermistor Support from Companion AFE
  • Full Array of Programmable Protection Features
    • Voltage
    • Current
    • Temperature
    • System Components
  • Lifetime Data Logging
  • Supports CC-CV Charging, Including Precharge, Charge Inhibit, and
    Charge Suspend
  • Offers an Optional Resistor Programmable SMBus Slave Address for
    up to Eight Different Bus Addresses
  • Drives up to a 5-Segment LED or LCD Display for State-Of-Charge
    Indication
  • Provides SHA-1 Authentication

The Texas Instruments bq78350 Li-Ion and LiFePO4 Battery Management Controller and companion to the bq769x0 family of Analog Front End (AFE) protection devices provides a comprehensive set of Battery Management System (BMS) subsystems, helping to accelerate product development for faster time-to-market.

The bq78350 controller and the bq769x0 AFE support from 3-series to 15-series cell applications. The bq78350 provides an accurate fuel gauge and state-of-health (SoH) monitor, as well as cell balancing and a full range of voltage-, current-, and temperature-based protection features.

The bq78350 offers optional LED or LCD display configurations for the capacity reporting. It also makes data available over its SMBus 1.1 interface. Battery history and diagnostic data is also kept within the device in non-volatile memory and is available over the same interface.

The Texas Instruments bq78350 Li-Ion and LiFePO4 Battery Management Controller and companion to the bq769x0 family of Analog Front End (AFE) protection devices provides a comprehensive set of Battery Management System (BMS) subsystems, helping to accelerate product development for faster time-to-market.

The bq78350 controller and the bq769x0 AFE support from 3-series to 15-series cell applications. The bq78350 provides an accurate fuel gauge and state-of-health (SoH) monitor, as well as cell balancing and a full range of voltage-, current-, and temperature-based protection features.

The bq78350 offers optional LED or LCD display configurations for the capacity reporting. It also makes data available over its SMBus 1.1 interface. Battery history and diagnostic data is also kept within the device in non-volatile memory and is available over the same interface.

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Technical documentation

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Type Title Date
* Data sheet bq78350 CEDV Li-Ion Gas Gauge and Battery Management Controller Companion to the bq769x0 Battery Monitoring AFE datasheet PDF | HTML 14 Jun 2012
User guide bq76930 and bq76940 Evaluation Module (Rev. C) 10 Dec 2018
EVM User's guide bq76920 Evaluation Module User's Guide (Rev. D) 12 Nov 2018
User guide bq78350 Technical Reference Manual (Rev. B) 22 Jul 2015
Application note bq78350 Data Memory Programming for Mass Production 16 Apr 2015
Application note Using the bq78350 (Rev. A) 04 Aug 2014
Application note Using the bq78350 25 Jun 2014

Design & development

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

Evaluation board

BQ76920EVM — BQ76920 evaluation board with BQ78350 

The bq76920EVM is a populated circuit board for evaluation of the bq7692000 analog front-end (AFE) along with the bq78350 Battery Management Controller that serves as part of a complete pack monitoring and protection solution for 3 to 5-series Lithium Ion, Lithium iron phosphate, and more battery (...)

User guide: PDF
Not available on TI.com
Evaluation board

BQ76930EVM — BQ76930 evaluation board with BQ78350

The bq76930EVM is a populated circuit board for evaluation of the bq76930 analog front-end (AFE) along with the bq78350 Battery Management Controller that serves as part of a complete pack monitoring and protection solution for 6 to 10-series Lithium Ion, Lithium iron phosphate, and more battery (...)

User guide: PDF
Not available on TI.com
Evaluation board

BQ76940EVM — BQ76940 evaluation board with BQ78350

The bq76940EVM is a populated circuit board for evaluation of the bq76940 analog front-end (AFE) along with the bq78350 Battery Management Controller that serves as part of a complete pack monitoring and protection solution for 9 to 15-series Lithium Ion, Lithium iron phosphate, and more battery (...)

User guide: PDF
Not available on TI.com
Application software & framework

BQSTUDIO-STABLE Battery Management Studio (bqStudio) Software – stable version downloads for bq series of TI battery fuel gauges

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 (...)

Supported products & hardware

Supported products & hardware

Products
Battery monitors & balancers
BQ76942 3-series to 10-series multicell battery monitor and protector BQ76952 3-s to 16-s high-accuracy battery monitor and protector for Li-ion, Li-polymer and LiFePO4
Battery charger ICs
BQ24800 SMBus 1-4 cell Buck battery charge controller to support hybrid power boost and battery boost mode BQ25720 SMBus 1- to 4-cell NVDC buck-boost battery charge controller with power path and USB-C® PD OTG BQ25723 I²C 1-4 cell NVDC buck-boost battery charge controller with power path and USB-C® PD OTG BQ25731 I2C 1-5 cell NVDC buck-boost battery charge controller with USB type-C PD support BQ25790 Integrated, NVDC, 5-A 1-cell to 4-cell switch-mode buck-boost battery charger BQ25792 I2C controlled, 5-A, 1-4 cell buck-boost charger with dual-input selector and USB PD 3.0 OTG output
Battery fuel gauges
BQ27220 Single cell pack/system-side CEDV battery fuel (gas) gauge w/pre-programmed chemistry profiles BQ27320 Single cell pack/System-side CEDV battery fuel (gas) gauge BQ27425-G1 System-side Impedance Track™; fuel gauge with direct battery connection | gas gauge battery BQ27425-G2A System-side Impedance Track™; fuel gauge for LiCoO2 battery BQ27425-G2B System-side Impedance Track™; fuel gauge LiMn2O4 battery BQ27520-G4 System side Impedance Track™ fuel gauge with integrated LDO. BQ27530-G1 System-side Impedance-Track fuel (gas) gauge with direct battery connection BQ27531-G1 Battery management unit Impedance Track™ fuel (gas) gauge for bq2419x charger controller BQ27532-G1 Battery management unit Impedance Track™ fuel gauge for bq2425x charger BQ27545-G1 Single cell, pack side, Impedance Track™ fuel gauge BQ27546-G1 Single cell Impedance Track™ pack side fuel gauge with DSBGA package BQ27621-G1 System-side fuel gauge with Dynamic Voltage Correlation, battery gas gauge BQ27741-G1 Pack-side Impedance Track™(tm) fuel (gas) gauge with integrated protector BQ27742-G1 Single cell Li-ion battery fuel gauge with integrated protection | battery gas gauge BQ27Z561 Impedance Track™ integrated circuit gas gauge solution for 1-series BQ28Z610 Battery fuel gauge with integrated protector for 1-2 series packs BQ34110 Multi-chemistry high-cell Count battery fuel gauge with integrated rarely discharged module BQ34210-Q1 Automotive Qualified Single cell system-side CEDV fuel gauge BQ34Z100-G1 Multi-chemistry Impedance Track™ standalone fuel gauge | battery gas gauge BQ35100 Battery fuel gauge for non-rechargeable batteries (lithium primary) and end-of-service monitor BQ4050 1-4 series CEDV battery fuel (gas) gauge BQ40Z50 1-4 series Li-ion battery pack manager | battery fuel (gas) gauge BQ40Z50-R1 1-4 series Li-ion battery pack manager supporting Turbo Mode 1.0 BQ40Z50-R2 1-4 series Li-ion battery pack manager supporting Turbo Mode 2.0 BQ40Z60 Complete multi-cell battery manager | battery fuel (gas) gauge BQ40Z80 2-s to 6-s battery pack manager with Impedance Track™ gas gauging BQ78350 Companion CEDV Fuel Gauge Battery Management Controller for bq76940 Monitor Family BQ78350-R1 CEDV li-ion gas gauge and battery management controller BQ78Z100 Impedance Track™ battery fuel (gas) gauge for 1-series to 2-series
Download options
Application software & framework

BQSTUDIO-TEST Battery Management Studio (bqStudio) Software – Beta version downloads

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 (...)

Supported products & hardware

Supported products & hardware

Products
Battery monitors & balancers
BQ769142 3-s to 14-s high-accuracy battery monitor and protector for Li-ion, Li-polymer and LiFePO4 battery BQ76942 3-series to 10-series multicell battery monitor and protector BQ76952 3-s to 16-s high-accuracy battery monitor and protector for Li-ion, Li-polymer and LiFePO4
Battery charger ICs
BQ24800 SMBus 1-4 cell Buck battery charge controller to support hybrid power boost and battery boost mode BQ25720 SMBus 1- to 4-cell NVDC buck-boost battery charge controller with power path and USB-C® PD OTG BQ25723 I²C 1-4 cell NVDC buck-boost battery charge controller with power path and USB-C® PD OTG BQ25731 I2C 1-5 cell NVDC buck-boost battery charge controller with USB type-C PD support BQ25756 Stand-alone or I²C controlled 70-V bidirectional buck-boost charge controller with MPPT BQ25790 Integrated, NVDC, 5-A 1-cell to 4-cell switch-mode buck-boost battery charger BQ25792 I2C controlled, 5-A, 1-4 cell buck-boost charger with dual-input selector and USB PD 3.0 OTG output
Battery fuel gauges
BQ27220 Single cell pack/system-side CEDV battery fuel (gas) gauge w/pre-programmed chemistry profiles BQ27320 Single cell pack/System-side CEDV battery fuel (gas) gauge BQ27425-G1 System-side Impedance Track™; fuel gauge with direct battery connection | gas gauge battery BQ27425-G2A System-side Impedance Track™; fuel gauge for LiCoO2 battery BQ27425-G2B System-side Impedance Track™; fuel gauge LiMn2O4 battery BQ27427 Single-cell battery fuel gauge with pre-programmed chemistry and integrated sense resistor BQ27510-G3 System-side Impedance-Track fuel gauge that provides 32 bytes of user-programmable data Flash memory BQ27520-G4 System side Impedance Track™ fuel gauge with integrated LDO. BQ27530-G1 System-side Impedance-Track fuel (gas) gauge with direct battery connection BQ27531-G1 Battery management unit Impedance Track™ fuel (gas) gauge for bq2419x charger controller BQ27532-G1 Battery management unit Impedance Track™ fuel gauge for bq2425x charger BQ27541-G1 Pack-side Impedance Track™ battery fuel gauge with integrated LDO BQ27541-V200 Single cell Li-ion battery fuel gauge for battery pack Integration; FW upgrade to BQ27541 BQ27542-G1 Single cell Impedance Track™ pack side fuel gauge with SON package BQ27545-G1 Single cell, pack side, Impedance Track™ fuel gauge BQ27546-G1 Single cell Impedance Track™ pack side fuel gauge with DSBGA package BQ27621-G1 System-side fuel gauge with Dynamic Voltage Correlation, battery gas gauge BQ27741-G1 Pack-side Impedance Track™(tm) fuel (gas) gauge with integrated protector BQ27742-G1 Single cell Li-ion battery fuel gauge with integrated protection | battery gas gauge BQ27Z561 Impedance Track™ integrated circuit gas gauge solution for 1-series BQ27Z746 Pack-side, single-cell Impedance Track™ technology fuel gauge with integrated protector BQ28Z610 Battery fuel gauge with integrated protector for 1-2 series packs BQ34110 Multi-chemistry high-cell Count battery fuel gauge with integrated rarely discharged module BQ34210-Q1 Automotive Qualified Single cell system-side CEDV fuel gauge BQ34Z100-G1 Multi-chemistry Impedance Track™ standalone fuel gauge | battery gas gauge BQ35100 Battery fuel gauge for non-rechargeable batteries (lithium primary) and end-of-service monitor BQ4050 1-4 series CEDV battery fuel (gas) gauge BQ40Z50 1-4 series Li-ion battery pack manager | battery fuel (gas) gauge BQ40Z50-R1 1-4 series Li-ion battery pack manager supporting Turbo Mode 1.0 BQ40Z50-R2 1-4 series Li-ion battery pack manager supporting Turbo Mode 2.0 BQ40Z60 Complete multi-cell battery manager | battery fuel (gas) gauge BQ40Z80 2-s to 6-s battery pack manager with Impedance Track™ gas gauging BQ78350 Companion CEDV Fuel Gauge Battery Management Controller for bq76940 Monitor Family BQ78350-R1 CEDV li-ion gas gauge and battery management controller BQ78Z100 Impedance Track™ battery fuel (gas) gauge for 1-series to 2-series
Hardware development
MKST-3P-ALT-EV2300 MKS Technology alternative for EV2300 communications transceiver
Download options
Application software & framework

GPCCEDV — Gauging Parameter Calculator for CEDV gauges

Gauging Parameter Calculator (GPC) is a math calculation and simulation tool that helps the battery designer to obtain matching Compensated End of Discharge Voltage (CEDV) coefficients for the specific battery profile. The tool allows the user to increase the accuracy of the fuel gauge IC over (...)
Firmware

BQ78350-DEVICE-FW BQ78350 family of gauges firmware

BQ78350 family of gauges firmware is a firmware-only release that can be flashed onto any existing BQ78350 hardware (such as the BQ78350, BQ78350-R1, BQ78350-R2, … devices). The firmware incorporates the CEDV Li-ion and LiFePO4 battery management controller to create a pack-based solution that (...)

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Supported products & hardware

Supported products & hardware

Products
Battery fuel gauges
BQ78350 Companion CEDV Fuel Gauge Battery Management Controller for bq76940 Monitor Family BQ78350-R1 CEDV li-ion gas gauge and battery management controller BQ78350-R1A CEDV li-ion gas gauge and battery management controller
Hardware development
Evaluation board
BQ76940EVM BQ76940 evaluation board with BQ78350 BQ76920EVM BQ76920 evaluation board with BQ78350  BQ76930EVM BQ76930 evaluation board with BQ78350
Software
Application software & framework
BQ-HI-PRODUCTION Production Application Software for Hi-Cell Count Battery Fuel (Gas) Gauges BQSTUDIO Battery Management Studio (bqStudio) Software
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Software programming tool

BQ-BMS-PROGRAMMER-SW Command line programmers for BQ products

BQ-BATTERY-PROGRAMMER-SW software development kit (SDK) is a collection of robust software command line tools that assist with the process of programming, testing, or assembling packs that use TI Battery management products. The executables in this software work with the MKST-3P-ALT-EV2300 MKS (...)

lock = Requires export approval (1 minute)
Supported products & hardware

Supported products & hardware

Products
Battery fuel gauges
BQ20Z40 SBS Compliant Gas Gauge with Impedance Track Technology for use with BQ29330 BQ20Z40-R1 SBS 1.1 compliant Gas Gauge with Impedance Track™ Technology BQ20Z70-V150 SBS 1.1-compliant gas gauge enabled with Impedance Track™ technology BQ20Z70-V160 SBS 1.1-compliant gas gauge enabled with Impedance Track™ technology for use with the bq29330 BQ20Z80 SBS 1.1-compliant gas gauge enabled with Impedance Track™; technology for use with the bq29312 BQ20Z80-V102 SBS 1.1-compliant gas gauge enabled w/Impedance Track™ technology BQ20Z80-V110 SBS 1.1-compliant gas gauge enabled w/Impedance Track™ technology with FW v1.10 BQ20Z80A-V110 SBS 1.1 compliant gas gauge enabled with Impedance Track™; technology for use with the bq29312A BQ27505-J2 System-side Impedance Track™; fuel gauge with FW v2.15 BQ27505-J3 System-side Impedance Track™; fuel gauge with FW v2.20 BQ27505-J4 System-side Impedance Track™; fuel gauge with FW v2.24 BQ27505-J5 System-side Impedance Track™; fuel gauge with FW v2.29 BQ27520-G4 System side Impedance Track™ fuel gauge with integrated LDO. BQ27530-G1 System-side Impedance-Track fuel (gas) gauge with direct battery connection BQ27531-G1 Battery management unit Impedance Track™ fuel (gas) gauge for bq2419x charger controller BQ27532-G1 Battery management unit Impedance Track™ fuel gauge for bq2425x charger BQ27545-G1 Single cell, pack side, Impedance Track™ fuel gauge BQ27546-G1 Single cell Impedance Track™ pack side fuel gauge with DSBGA package BQ27741-G1 Pack-side Impedance Track™(tm) fuel (gas) gauge with integrated protector BQ27742-G1 Single cell Li-ion battery fuel gauge with integrated protection | battery gas gauge BQ27Z561 Impedance Track™ integrated circuit gas gauge solution for 1-series BQ27Z561-R1 Impedance Track™ battery gas gauge solution for 1-series cell Li-ion battery packs BQ27Z561-R2 Impedance track battery gas gauge solution for 1-series cell li-ion battery packs BQ27Z746 Pack-side, single-cell Impedance Track™ technology fuel gauge with integrated protector BQ28Z610 Battery fuel gauge with integrated protector for 1-2 series packs BQ28Z610-R1 Battery fuel gauge with integrated protector for 1-2 series packs BQ28Z620 Battery fuel gauge with integrated protector for 1-series to 2 series packs with 1.2-V I/O BQ3050 SBS 1.1-compliant 2-s to 4-s battery gas gauge & protection BQ3055 2-series, 3-series, and 4-series Li-ion battery pack manager BQ3060 SBS 1.1-compliant gas gauge and protector BQ30Z554-R1 2 series, 3 series, and 4 series Li-ion battery pack manager BQ34110 Multi-chemistry high-cell Count battery fuel gauge with integrated rarely discharged module BQ34210-Q1 Automotive Qualified Single cell system-side CEDV fuel gauge BQ34Z100 1-s to 16-s Impedance Track™ fuel gauge | battery gas gauge BQ34Z100-G1 Multi-chemistry Impedance Track™ standalone fuel gauge | battery gas gauge BQ34Z100-R2 Multichemistry Impedance Track™ stand-alone fuel gauge BQ34Z110 Wide range fuel gauge with Impedance Track™; for lead acid batteries | battery gas gauge BQ35100 Battery fuel gauge for non-rechargeable batteries (lithium primary) and end-of-service monitor BQ4050 1-4 series CEDV battery fuel (gas) gauge BQ40Z50 1-4 series Li-ion battery pack manager | battery fuel (gas) gauge BQ40Z50-R1 1-4 series Li-ion battery pack manager supporting Turbo Mode 1.0 BQ40Z50-R2 1-4 series Li-ion battery pack manager supporting Turbo Mode 2.0 BQ78350 Companion CEDV Fuel Gauge Battery Management Controller for bq76940 Monitor Family BQ78350-R1 CEDV li-ion gas gauge and battery management controller BQ78350-R1A CEDV li-ion gas gauge and battery management controller
Hardware development
Evaluation board
ADVANCED-BQMTESTER Texas Instruments Advanced bqMTester Multi-Station Test and Program Board BQ27510EVM System-Side Single-Cell Impedance Track™ Technology Evaluation Module  | Battery Fuel Gauge BQ27520EVM System-Side Impedance Track™ Battery Fuel Gauge Evaluation Module | Gas Gauge BQ27530EVM BQ27530EVM System-Side Impedance-Track Fuel (Gas) Gauge Direct Battery Connection Evaluation Module BQ27531EVM Battery Management Unit Impedance Track Fuel (Gas) Gauge Charger Controller Evaluation Module BQ27532EVM-656 Battery Charging Solution Evaluation Module BQ27542EVM Li-ion Battery Fuel Gauge Evaluation Module BQ27545EVM BQ27545EVM Single Cell, Pack Side, Impedance Track Fuel Gauge Evaluation Module BQ27546EVM-702 bq27546 Gas Gauge with Impedance Track™ Technology BQ27741EVM BQ27741EVM Pack-Side Impedance Track Fuel (Gas) Gauge Integrated Protector Evaluation Module BQ27742EVM bq27742-G1 Single Cell Li-ion Battery Fuel (Gas) Gauge Programmable Evaluation Module BQ27750EVM-837 BQ27750 1-Cell Programmable Battery Manager Evaluation Module BQ27Z561EVM-011 BQ27Z561 1S-cell programmable battery manager Evaluation module BQ27Z746EVM-047 BQ27Z746 evaluation module Impedance Track™ technology battery gas gauge with protection solution BQ28Z610EVM-532 BQ28Z610 1-Cell to 2-Cell Programmable Battery Manager Evaluation Module BQ28Z620EVM-071 BQ28Z620 evaluation module for one- or two-series cell Li-Ion Impedance Track™ battery fuel gauge BQ3050EVM-001 bq3050EVM SBS 1.1 Compliant Advanced Gas Gauge EVM BQ34110EVM-796 bq34110 Multi-Chemistry CEDV Battery Gas Gauge for Rarely Discharged Applications Evaluation Module BQ34210IQ1EVM-826 bq34210-Q1 Evaluation Module for System Side CEDV Fuel Gauge BQ34Z100EVM Bq34z100EVM 1s to 16s Impedance Track Fuel Gauge Battery Evaluation Module | Gas Gauge Battery BQ35100EVM-795 bq35100 Lithium Primary Cell Evaluation Module Using End-of-Service Monitor Gas Gauging BQ4050EVM-561 1 Series, 2 Series, 3 Series, and 4 Series Li-Ion Battery Pack Manager Evaluation Module BQ40Z50EVM-561 BQ40Z50 evaluation board  BQ40Z60EVM-578 2 Series, 3 Series, and 4 Series Li-Ion Battery Pack Manager Evaluation Module BQ40Z80EVM-020 BQ40Z80 2s-7s Battery Gauge Evaluation Module BQMTESTER BQMTESTER Multi Channel Test and Program Board MKST-3P-ALT-EV2300 MKS Technology alternative for EV2300 communications transceiver
Software
Application software & framework
BQ-HI-PRODUCTION Production Application Software for Hi-Cell Count Battery Fuel (Gas) Gauges BQ27Z561-R2-DEVICE-FW BQ27Z561 firmware: impedance track battery gas gauge solution for 1-s cell li-ion battery BQEVSW BQ evaluation software (BQEVSW) v0.0.92 for BQ30Z554-R1 BQPRODUCTION Production tool for fourth generation multicell battery fuel (gas) gauges BQPRODUCTION-SINGLECELL Production Software for Single Cell Battery Fuel (Gas) Gauges BQSTUDIO Battery Management Studio (bqStudio) Software
Support software
BQ20Z60-R1_BQEVSW-SW BQ20Z60-R1 bqEASY Software BQ20Z65-R1_BQEVSW-SW BQ20Z65-R1 bqEASY Software BQ27Z746-DEVICE-FW BQ27Z746 family of gauges firmware BQ28Z610-DEVICE-FW BQ28Z610 family of gauges firmware BQ3060-BQEVSW-SW BQ3060 bqEVSW Software BQ40Z50-DEVICE-FW BQ40Z50 family of gauges firmware
Software programming tool
BQKEYPACKAGER Package Key Software for Battery Fuel Gauges BQKEYPROGRAMMER Program Key Software for Battery Fuel Gauges BQ28Z620-DEVICE-FW BQ28Z620 family of gauges firmware BQ34Z100-DEVICE-FW BQ34Z100 family of gauges firmware
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Software programming tool

BQ-PRODUCTION-HI-CELL-SW Production software for hi-cell count battery fuel (gas) gauges

Hi-cell bqProduction offers a full suite of robust tools to assist with the process of configuring, calibrating, manufacturing and tracking printed circuit boards utilizing TI's battery management products. This includes features that allow writing a golden image followed by different types of (...)

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Supported products & hardware

Supported products & hardware

Products
Battery fuel gauges
BQ34Z100 1-s to 16-s Impedance Track™ fuel gauge | battery gas gauge BQ34Z100-G1 Multi-chemistry Impedance Track™ standalone fuel gauge | battery gas gauge BQ34Z100-R2 Multichemistry Impedance Track™ stand-alone fuel gauge BQ78350 Companion CEDV Fuel Gauge Battery Management Controller for bq76940 Monitor Family BQ78350-R1 CEDV li-ion gas gauge and battery management controller BQ78350-R1A CEDV li-ion gas gauge and battery management controller BQ34110 Multi-chemistry high-cell Count battery fuel gauge with integrated rarely discharged module
Hardware development
Evaluation board
BQ34Z100EVM Bq34z100EVM 1s to 16s Impedance Track Fuel Gauge Battery Evaluation Module | Gas Gauge Battery MKST-3P-ALT-EV2300 MKS Technology alternative for EV2300 communications transceiver BQ76920EVM BQ76920 evaluation board with BQ78350  BQ76930EVM BQ76930 evaluation board with BQ78350 BQ34110EVM-796 bq34110 Multi-Chemistry CEDV Battery Gas Gauge for Rarely Discharged Applications Evaluation Module
Software
Application software & framework
BQ-HI-PRODUCTION Production Application Software for Hi-Cell Count Battery Fuel (Gas) Gauges BQSTUDIO Battery Management Studio (bqStudio) Software BQPRODUCTION Production tool for fourth generation multicell battery fuel (gas) gauges BQPRODUCTION-SINGLECELL Production Software for Single Cell Battery Fuel (Gas) Gauges
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Support software

SLUC568 bq78350 Family Thermistor Coefficient Calculator

Supported products & hardware

Supported products & hardware

Products
Battery fuel gauges
BQ78350 Companion CEDV Fuel Gauge Battery Management Controller for bq76940 Monitor Family BQ78350-R1 CEDV li-ion gas gauge and battery management controller BQ78350-R1A CEDV li-ion gas gauge and battery management controller
Calculation tool

GAUGEPARCAL — Gauging Parameter Calculator

Gauging Parameter Calculator (GPC) is a math calculation and simulation tool that helps the battery designer to obtain matching Compensated End of Discharge Voltage (CEDV) coefficients for the specific battery profile. The tool allows the user to increase the accuracy of the fuel gauge IC over (...)
User guide: PDF
Reference designs

TIDA-00255 — 15 Cell Lithium Ion Battery Controller Analog Front End Reference Design

The TIDA00255 reference design utilizes the bq76940 analog front end (AFE) IC.  It measures cell voltages, and die temperature or external thermistor voltage using a 14 bit ADC.  Current is measured separately by a separate 16 bit coulomb counter.  The design can turn off low side (...)
Test report: PDF
Schematic: PDF
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Ordering & quality

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  • Ongoing reliability monitoring

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