TIDA-00792

Multi-Cell 36-48V Battery Management System Reference Design

TIDA-00792

Design files

Overview

This reference design provides monitoring, balancing, primary protection and gauging for a 12- to 15-cell lithium-ion or lithium-iron phosphate-based batteries. This board is intended to be mounted in an enclosure for industrial systems. The reference design provides battery protection and gauging configuration with parameters avoiding code development and provides high-side protection switching to allow simple PACK-referenced SMBus communication for battery status, even while protected.

Features
  • 12- to 15-cell li-ion and phosphate battery management system
  • High-side protection switching using N-channel MOSFETs
  • Cell balancing for extended battery life
  • Gas gauging for estimation of system run-time
  • Tested and includes GUI and getting started guide

A fully assembled board has been developed for testing and performance validation only, and is not available for sale.

Design files & products

Design files

Download ready-to-use system files to speed your design process.

TIDUCN1.PDF (3262 K)

Reference design overview and verified performance test data

TIDRQY7.PDF (470 K)

Detailed schematic diagram for design layout and components

TIDRQY8.PDF (70 K)

Complete listing of design components, reference designators, and manufacturers/part numbers

TIDRQY9.PDF (441 K)

Detailed overview of design layout for component placement

TIDRQZ1A.ZIP (1909 K)

Files used for 3D models or 2D drawings of IC components

TIDCDF8.ZIP (845 K)

Design file that contains information on physical board layer of design PCB

TIDRQZ0.PDF (2197 K)

PCB layer plot file used for generating PCB design layout

Products

Includes TI products in the design and potential alternatives.

Battery fuel gauges

BQ78350-R1CEDV li-ion gas gauge and battery management controller

Data sheet: PDF | HTML
Battery fuel gauges

BQ78350-R1ACEDV li-ion gas gauge and battery management controller

Data sheet: PDF | HTML
Battery monitors & balancers

BQ76200High-side n-channel FET driver

Data sheet: PDF | HTML
Battery monitors & balancers

BQ769409 to 15-series cell li-ion and li-phosphate battery monitor (bq76940 family)

Data sheet: PDF | HTML
ESD & surge protection ICs

TPD1E10B0612-pF, ±5.5V, ±30-kV ESD protection diode in 0402 and SOD-523 package

Data sheet: PDF | HTML
N-channel MOSFETs

CSD13381F412-V, N channel NexFET™ power MOSFET, single LGA 1 mm x 0.6mm, 180 mOhm, gate ESD protection

Data sheet: PDF | HTML
N-channel MOSFETs

CSD19536KTT100-V, N channel NexFET™ power MOSFET, single D2PAK, 2.4 mOhm

Data sheet: PDF | HTML

Start development

Software

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 (...)

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
Download options

BQ78350-DEVICE-FW BQ78350 family of gauges firmware

close
Latest version
Version: R3-V3.00
Release date: 13 Jan 2023
lock = Requires export approval (1 minute)
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

Documentation

Technical reference manual addendum for BQ78350-R3

Release Infomation

Overview

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 provides a rich array of features for gas gauging, protection, authentication, and monitoring using the companion BQ769x0 family of analog front end (AFE) protection devices for upto 15-series cell Li-ion and Li-polymer battery packs.

The BQ78350-R1A device offers optional LED or LCD display configurations for 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.

Features

The BQ78350-DEVICE-FW firmware is usable on any previous version of the BQ78350 hardware. Refer the release notes for more information.

What's new

  • This is a firmware only download
  • See Technical Reference Manual addendum for changes from the BQ78350-R1 device

Technical documentation

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Type Title Date
* Design guide Multicell 36-V to 48-V Battery Management System Reference Design Nov. 18, 2016

Related design resources

Hardware development

EVALUATION BOARD
BQ76940EVM BQ76940 evaluation board with BQ78350

Software development

APPLICATION SOFTWARE & FRAMEWORK
BQSTUDIO Battery Management Studio (bqStudio) Software

Reference designs

REFERENCE DESIGN
TIDA-00255 15 Cell Lithium Ion Battery Controller Analog Front End Reference Design TIDA-00449 10s Battery Pack Monitoring, Balancing, and Comprehensive Protection. 50A Discharge Reference Design

Support & training

TI E2E™ forums with technical support from TI engineers

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