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TIDA-00792

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

Design files

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.

download Design guide — TIDA-00792
TIDUCN1.PDF (3262 K)

Reference design overview and verified performance test data

download Schematic — TIDA-00792
TIDRQY7.PDF (470 K)

Detailed schematic diagram for design layout and components

download Bill of materials (BOM) — TIDA-00792
TIDRQY8.PDF (70 K)

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

download Assembly drawing — TIDA-00792
TIDRQY9.PDF (441 K)

Detailed overview of design layout for component placement

download CAD/CAE symbol — TIDA-00792
TIDRQZ1A.ZIP (1909 K)

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

download Gerber file — TIDA-00792
TIDCDF8.ZIP (845 K)

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

download PCB layout — TIDA-00792
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-R1 — CEDV li-ion gas gauge and battery management controller

Data sheet: PDF | HTML
Battery fuel gauges

BQ78350-R1A — CEDV li-ion gas gauge and battery management controller

Data sheet: PDF | HTML
Battery monitors & balancers

BQ76200 — High-side n-channel FET driver

Data sheet: PDF | HTML
Battery monitors & balancers

BQ76940 — 9 to 15-series cell li-ion and li-phosphate battery monitor (bq76940 family)

Data sheet: PDF | HTML
ESD & surge protection ICs

TPD1E10B06 — 12-pF, ±5.5V, ±30-kV ESD protection diode in 0402 and SOD-523 package

Data sheet: PDF | HTML
N-channel MOSFETs

CSD13381F4 — 12-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

CSD19536KTT — 100-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

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Latest version
Version: R3-V3.00
Release date: 13 Jan 2023
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Release notes

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lock

bq78350R3FirmwareBundle-3.00-windows-installer.exe  — 5832 K

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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

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SLUUCM2

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

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