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TIDA-00449
10s Battery Pack Monitoring, Balancing, and Comprehensive Protection. 50A Discharge Reference Design
TIDA-00449
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
Industrial
- Analog-controlled BBU
- Battery pack with AFE & MCU
- Battery pack with AFE+MCU
- Battery pack with protection & gauge
- Battery pack with protection, gauge & external communication
- Cordless handheld garden tool
- Cordless power tool
- Cordless vacuum cleaner
- Digital-controlled BBU
- Marine equipment
- Portable power station with bidirectional AC/DC
- Portable power station with standalone charger
- Robotic lawn mower
- Vacuum robot
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 K)
Reference design overview and verified performance test data
TIDRHT7.PDF (994 K)
Detailed schematic diagram for design layout and components
TIDRHT8.PDF (221 K)
Complete listing of design components, reference designators, and manufacturers/part numbers
TIDRHT9.PDF (517 K)
Detailed overview of design layout for component placement
TIDRHU1.ZIP (3631 K)
Files used for 3D models or 2D drawings of IC components
TIDCB49.ZIP (512 K)
Design file that contains information on physical board layer of design PCB
TIDRHU0.PDF (3485 K)
PCB layer plot file used for generating PCB design layout
Products
Includes TI products in the design and potential alternatives.
MOSFETs
CSD13381F4 — 12-V, N channel NexFET™ power MOSFET, single LGA 1 mm x 0.6mm, 180 mOhm, gate ESD protection
Data sheet: PDF | HTMLMOSFETs
CSD19536KTT — 100-V, N channel NexFET™ power MOSFET, single D2PAK, 2.4 mOhm
Data sheet: PDF | HTMLMOSFETs
CSD23381F4 — -12-V, P channel NexFET™ power MOSFET, single LGA 0.6 mm x 1 mm, 175 mOhm, gate ESD protection
Data sheet: PDF | HTMLMSP430 microcontrollers
MSP430G2553 — 16 MHz MCU with 16KB Flash, 512B SRAM, comparator, UART/SPI/I2C, timer
Data sheet: PDFStart development
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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