TIDA-00449

10s Battery Pack Monitoring, Balancing, and Comprehensive Protection. 50A Discharge Reference Design

TIDA-00449

Design files

Overview

This reference design is ready tested for 10 cells in series battery pack monitoring, balancing and protection for power tools. Power tools increasingly use highly power-dense Li-Ion or Li-Iron phosphate cells based battery packs that need to be protected from explosion due to incorrect charging or discharging. TIDA-00449 also achieves thermal requirements for power tool battery packs when discharging at high continuous current.

Features
  • Battery pack designed for 36 V (10-cell Li-Ion or  Li-Iron phosphate based), 50-A max continuous discharge current
  • Monitoring of cell voltages, pack current, pack temperatures and protection by controlling charge/discharge FETs and cell balancing
  • Hardware protection for overcurrent in discharge, short circuit in discharge, overvoltage and under voltage
  • Ultra-small footprint, low on-resistance, low Qg and Qgd FemtoFET MOSFETs on board for passive balancing current up to 150-mA per cell
  • Low quiescence current and ultra-low power state for shipment
  • On-board host microcontroller to enable implementation of battery fuel gauging
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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.

TIDUAR8C.PDF (3286 KB)

Reference design overview and verified performance test data

TIDRHT9.PDF (517 KB)

Detailed overview of design layout for component placement

TIDRHT8.PDF (221 KB)

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

TIDRHU1.ZIP (3631 KB)

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

TIDCB49.ZIP (513 KB)

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

TIDRHU0.PDF (3485 KB)

PCB layer plot file used for generating PCB design layout

TIDRHT7.PDF (994 KB)

Detailed schematic diagram for design layout and components

Products

Includes TI products in the design and potential alternatives.

MOSFETs

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

Data sheet: PDF | HTML
MOSFETs

CSD23381F4-12-V, P channel NexFET™ power MOSFET, single LGA 0.6 mm x 1 mm, 175 mOhm, gate ESD protection

Data sheet: PDF | HTML
Digital temperature sensors

LMT010.5°C Accurate 2-pin Temperature Sensor with a Pulse Train Interface

Data sheet: PDF | HTML
Reset & watchdog ICs

TPS3839Ultra-low power, supply voltage supervisor

Data sheet: PDF | HTML
Battery monitors & balancers

BQ769306 to 10-Series Cell Li-Ion and Li-Phosphate Battery Monitor (bq76940 Family)

Data sheet: PDF | HTML
MOSFETs

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

Data sheet: PDF | HTML
MSP430 microcontrollers

MSP430G255316 MHz MCU with 16KB Flash, 512B SRAM, comparator, UART/SPI/I2C, timer

Data sheet: PDF

Start development

Software

Support software

TIDCBB1 — TIDA-00449 Firmware

Supported products & hardware

Supported products & hardware

Hardware development
Reference design
TIDA-00449 10s Battery Pack Monitoring, Balancing, and Comprehensive Protection. 50A Discharge Reference Design
Download options

TIDCBB1 TIDA-00449 Firmware

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Latest version
Version: 01.00.00.00
Release date: Oct 21, 2015
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Hardware development
Reference design
TIDA-00449 10s Battery Pack Monitoring, Balancing, and Comprehensive Protection. 50A Discharge Reference Design

Release Information

The design resource accessed as www.ti.com/lit/zip/tidcbb1 or www.ti.com/lit/xx/tidcbb1/tidcbb1.zip has been migrated to a new user experience at www.ti.com/tool/download/TIDCBB1. Please update any bookmarks accordingly.

Technical documentation

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Type Title Date
* Design guide 10s battery monitoring, balancing, and comp protection, 50A discharge ref design (Rev. C) Feb 26, 2019

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