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


Design files


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.

  • 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
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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.

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


Includes TI products in the design and potential alternatives.

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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

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