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TIDA-010216

16s battery pack reference design with low-side MOSFET control for large capacity applications

TIDA-010216

Design files

Overview

This reference design is a low standby and ship-mode current consumption and high cell voltage accuracy 16s Lithium-ion (Li-ion) LiFePO4 battery pack. The design monitors each cell voltage, pack current, cell and MOSFET temperature with high accuracy and protects the Li-ion and LiFePO4 battery pack against cell overvoltage, cell undervoltage, overtemperature, charge and discharge overcurrent and discharge short-circuit situations. Five pairs of low-side N-channel MOSFET architecture join with strong on and off capability which allows the design to withstand a larger charge and discharge current. Through an efficient auxiliary power supply strategy, this reference design achieves 100-μA stand-by and 10-μA ship mode consumption which saves more energy and allows longer shipping time and standby time. These features make this reference design applicable for battery backup unit (BBU) of telecom and server, residential energy storage system (ESS), e-motorcycle, portable power station and other high-capacity battery pack applications.

Features
  • Low current consumption:
    • Typical 100-μA when in standby mode
    • Typical 10-μA when in ship mode
  • High cell voltage accuracy without calibrations
    • ±5 mV at 25°C
    • ±10 mV at 0°C–60°C
    • ±15 mV at –40°C to 85°C
  • Robust battery cell protection include cell overvoltage, cell undervoltage, two levels overcurrent discharge, overcurrent charge, discharge short circuit and overtemperature
  • Other system protections include cell open wire and thermal host watchdog, CAN bus fault, charge and discharge MOSFET short circuit
  • Low-side N-channel MOSFETs and strong driving capability

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.

PDF | HTML
TIDUF14.PDF (821 K)

Reference design overview and verified performance test data

TIDMB13.PDF (861 K)

Detailed schematic diagram for design layout and components

TIDMB14A.PDF (143 K)

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

TIDMB15.PDF (612 K)

Detailed overview of design layout for component placement

TIDMB17.ZIP (3559 K)

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

TIDCGB3.ZIP (2117 K)

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

TIDMB16.PDF (2521 K)

PCB layer plot file used for generating PCB design layout

Products

Includes TI products in the design and potential alternatives.

Battery monitors & balancers

BQ769523-s to 16-s high-accuracy battery monitor and protector for Li-ion, Li-polymer and LiFePO4

Data sheet: PDF | HTML
Buck converters (integrated switch)

LM5163100-V input, 0.5-A synchronous buck DC/DC converter with ultra-low IQ

Data sheet: PDF | HTML
Buck converters (integrated switch)

TPS543084.5-V to 28-V Input, 3-A output, synchronous 350-kHz FCCM step-down converter

Data sheet: PDF | HTML
Digital isolators

ISO7731Robust EMC, triple-channel, 2/1, reinforced digital isolator

Data sheet: PDF | HTML
ESD & surge protection ICs

TPD2E007Dual 15-pF, ±13-V, ±8-kV ESD protection diode for AC Signal Data Interfaces

Data sheet: PDF | HTML
Isolated CAN transceivers

ISO1042Isolated CAN transceiver with 70-V bus fault protection & flexible data rate

Data sheet: PDF | HTML
Linear & low-dropout (LDO) regulators

TPS7A24200-mA, 18-V, ultra-low-IQ, low-dropout (LDO) voltage regulator with enable

Data sheet: PDF | HTML
Low-side drivers

UCC275174-A/4-A single-channel gate driver with 5-V UVLO and 13-ns prop delay in SOT-23 package

Data sheet: PDF | HTML
Low-side drivers

UCC27524A5-A/5-A dual-channel gate driver with 5-V UVLO, enable, and negative input voltage handling

Data sheet: PDF | HTML
MSP430 microcontrollers

MSP430FR215524 MHz MCU with 32KB FRAM, 4KB SRAM, comparator, 12-bit ADC, UART/SPI/I2C, timer

Data sheet: PDF | HTML
N-channel MOSFETs

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

Data sheet: PDF | HTML
N-channel MOSFETs

CSD19538Q3A100-V, N channel NexFET™ power MOSFET, single SON 3 mm x 3 mm, 61 mOhm

Data sheet: PDF | HTML
RS-485 & RS-422 transceivers

THVD14003.3-V to 5-V, 500-Kbps, RS-485 transceiver in small package option with ±12-kV IEC ESD pro

Data sheet: PDF | HTML
Thermistors

TMP611%, 10-kΩ linear thermistor in 0402, 0603/0805 and through hole packages

Data sheet: PDF | HTML

Technical documentation

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Type Title Date
Design guide 16s Battery Pack Ref. Des. W/ Low-Side MOSFET Control for Large Capacity Apps. PDF | HTML Oct. 27, 2022
Application note Using Low-Side FETs with the BQ769x2 Battery Monitor Family (Rev. A) PDF | HTML Feb. 24, 2022
Application note Cell Balancing With BQ769x2 Battery Monitors (Rev. A) PDF | HTML Feb. 15, 2022

Related design resources

Software development

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

Design tools & simulation

CALCULATION TOOL
LM5163-LM5164DESIGN-CALC LM5163 and LM5164 converter quickstart design tool

Support & training

TI E2E™ forums with technical support from TI engineers

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