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TIDA-00449

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

Design files

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.

download Design guide — TIDA-00449
TIDUAR8C.PDF (3286 K)

Reference design overview and verified performance test data

download Schematic — TIDA-00449
TIDRHT7.PDF (994 K)

Detailed schematic diagram for design layout and components

download Bill of materials (BOM) — TIDA-00449
TIDRHT8.PDF (221 K)

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

download Assembly drawing — TIDA-00449
TIDRHT9.PDF (517 K)

Detailed overview of design layout for component placement

download CAD/CAE symbol — TIDA-00449
TIDRHU1.ZIP (3631 K)

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

download Gerber file — TIDA-00449
TIDCB49.ZIP (512 K)

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

download PCB layout — TIDA-00449
TIDRHU0.PDF (3485 K)

PCB layer plot file used for generating PCB design layout

Products

Includes TI products in the design and potential alternatives.

Battery monitors & balancers

BQ76930 — 6 to 10-Series Cell Li-Ion and Li-Phosphate Battery Monitor (bq76940 Family)

Data sheet: PDF | HTML
Digital temperature sensors

LMT01 — 0.5°C Accurate 2-pin Temperature Sensor with a Pulse Train Interface

Data sheet: PDF | HTML
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
MOSFETs

CSD19536KTT — 100-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
MSP430 microcontrollers

MSP430G2553 — 16 MHz MCU with 16KB Flash, 512B SRAM, comparator, UART/SPI/I2C, timer

Data sheet: PDF
Supervisor & reset ICs

TPS3839 — Ultra-low power, supply voltage supervisor

Data sheet: PDF | HTML

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Software

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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