10s-16s battery pack reference design with accurate cell measurement and high-side MOSFET control
TIDA-010208
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Key Document

Description

This reference design is a low standby and ship-mode current consumption and high cell voltage accuracy 10s–16s Lithium-ion (Li-ion), LiFePO4 battery pack design. It monitors each cell voltage, pack current, cell and MOSFET temperature with high accuracy and protects the Li-ion, LiFePO4 battery pack against cell overvoltage, cell undervoltage, overtemperature, charge and discharge over current and discharge short-circuit situations. It adopts high-side N-channel MOSFET architecture and has strong driving on and off capability. Through an efficient auxiliary power supply strategy, this reference design achieves 100-μA standby and 10-μA ship mode consumption, saving more energy and allowing longer shipping time and idle time. These features make this reference design highly applicable for e-bike and e-scooter battery pack applications.

Features
  • Ultra-low current consumption:
    • typical 100-μA when in standby mode
    • typical 10-μA when in shipping 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, including:
    • Primary: cell overvoltage, cell undervoltage, two levels overcurrent discharge, overcurrent charge, discharge short circuit and overtemperature
    • Secondary: cell over voltage, cell undervoltage and overtemperature
  • Other system protections, including: cell open wire and thermal host watchdog
  • Reverse charger and high voltage on PACK side
  • High-side N-channel MOSFETs and strong driving capability

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Schematic/Block Diagram

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Design Guide

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Design Files

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TI Devices (9)

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Part Number Name Product Family Sample & Buy Design Kits & Evaluation Modules
BQ76952  3-s to 16-s high-accuracy battery monitor and protector for Li-ion, Li-polymer and LiFePO4  Battery management ICs  Sample & Buy View Design Kits & Evaluation Modules
BQ77216  Voltage and temperature protection for 3-s to 16-s cell Li-ion batteries with internal delay timer  Battery management ICs  Sample & Buy View Design Kits & Evaluation Modules
CSD19536KTT  100-V, N channel NexFET™ power MOSFET, single D2PAK, 2.4 mOhm  MOSFETs  Sample & Buy Not Available
LM5163  100-V input, 0.5-A synchronous buck DC/DC converter with ultra-low IQ  Step-down (buck) regulators  Sample & Buy View Design Kits & Evaluation Modules
MSP430FR2155  24 MHz MCU with 32KB FRAM, 4KB SRAM, comparator, 12-bit ADC, UART/SPI/I2C, timer  Microcontrollers (MCUs)  Sample & Buy View Design Kits & Evaluation Modules
TCAN1042HV  Fault Protected CAN Transceiver With Flexible Data-Rate  Interface  Sample & Buy View Design Kits & Evaluation Modules
TCAN1044V  Fault-protected CAN FD transceiver with standby mode and 1.8-V IO support  Interface  Sample & Buy View Design Kits & Evaluation Modules
TLV704  150-mA, 24-V, ultra-low-IQ, low-dropout voltage regulator  Power management  Sample & Buy View Design Kits & Evaluation Modules
TMP61  ±1% tolerance 10kΩ linear thermistor available in 0402 and 0603 package options  Temperature sensors  Sample & Buy View Design Kits & Evaluation Modules

CAD/CAE symbols

Part # Package | Pins CAD File (.bxl) STEP Model (.stp)
BQ76952 Download
BQ77216 Download
CSD19536KTT Download -
LM5163 Download Download
MSP430FR2155 Download Download
Download
Download
Download
TCAN1042HV Download
TCAN1044V Download
TLV704 Download Download
TMP61 Download

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Technical documentation

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User guide (1)
Title Type Size (KB) Date
PDF 2725 11 Jan 2021
Design files (6)
Title Type Size (KB) Date
ZIP 1634 11 Jan 2021
ZIP 2506 11 Jan 2021
PDF 1921 11 Jan 2021
PDF 489 11 Jan 2021
PDF 178 11 Jan 2021
PDF 713 11 Jan 2021
Related Tools & Software

Hardware development (1)

Design tools & simulation (1)

Name Part Number Tool Type
LM5163 and LM5164 converter quickstart design tool  LM5163-LM5164DESIGN-CALC  Calculation tool 

Software development (1)

Name Part Number Software Type
Battery Management Studio (bqStudio) Software  BQSTUDIO  Application software & framework 


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