TIDA-010247

High-side N-MOSFET control (up to 32s) battery pack reference design with stacked battery monitor

TIDA-010247

Design files

Overview

This reference design is a high-side, N-channel MOSFET control (up to 32s) battery pack, using the stacked BQ769x2 battery monitor family. This design monitors each cell voltage, pack current, cell and MOSFET temperature and protects the battery pack for secure safe use. The high-side N-channel MOSFET architecture and optimized driving circuits provide easy switch control. This reference design achieves low stand-by and ship-mode consumption and optimizes the current gaps between two groups. This reference design is for high-cell-count, high voltage and battery-pack applications.

Features
  • 300-μA consumption in standby mode
  • 10-µA consumption in ship mode
  • ±5-mV voltage accuracy at 25°C without calibration
  • Robust and programmable battery cell and system protection
  • High-side N-channel MOSFETs and strong driving capability
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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.

PDF | HTML
TIDUF20.PDF (798 K)

Reference design overview and verified performance test data

TIDMB58.PDF (955 K)

Detailed schematic diagram for design layout and components

TIDMB59.PDF (145 K)

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

TIDMB60.PDF (669 K)

Detailed overview of design layout for component placement

TIDMB62.ZIP (4336 K)

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

TIDCGC2.ZIP (1643 K)

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

TIDMB61.PDF (3327 K)

PCB layer plot file used for generating PCB design layout

Products

Includes TI products in the design and potential alternatives.

Battery monitors & balancers

BQ769423-series to 10-series multicell battery monitor and protector

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

LM51686-V to 120-V wide VIN, 300-mA DC-DC converter with Fly-Buck™ capability

Data sheet: PDF | HTML
CAN transceivers

TCAN1043A-Q1Automotive CAN FD transceiver with wake/inhibit/sleep

Data sheet: PDF | HTML
ESD protection diodes

TPD2E007Dual 10-pF, ±13-V, ±8-kV ESD protection diode for AC Signal Data Interfaces

Data sheet: PDF | HTML
I2C isolators

ISO1640Hot-swappable, robust-EMC bidirectional I2C isolator with bidirectional clock

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

TPS7A25300-mA, 18-V, ultra-low-IQ, high-accuracy, adjustable low-dropout voltage regulator with power good

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
N-channel MOSFETs

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

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

THVD2410±70-V fault-protected 3.3-V to 5-V RS-485 transceiver with IEC ESD

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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View all 4
Type Title Date
Application note Design Considerations of Stacked BQ769x2 With High-Side N-MOSFET PDF | HTML Feb. 09, 2023
Design guide High-Side N-MOSFET Control (Up to 32s) Batt Pack RefDes W/ Stacked Batt Monitor PDF | HTML Dec. 06, 2022
Application note BQ769x2 Calibration and OTP Programming Guide (Rev. A) PDF | HTML Aug. 06, 2021
Application note DC/DC Buck Converters With Ultra-Low IQ for Industrial Battery-Pack Applications Feb. 20, 2019

Related design resources

Software development

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

Support & training

TI E2E™ forums with technical support from TI engineers

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