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.
A fully assembled board has been developed for testing and performance validation only, and is not available for sale.
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Reference design overview and verified performance test data
Detailed schematic diagram for design layout and components
Complete listing of design components, reference designators, and manufacturers/part numbers
Detailed overview of design layout for component placement
Files used for 3D models or 2D drawings of IC components
Design file that contains information on physical board layer of design PCB
PCB layer plot file used for generating PCB design layout
Includes TI products in the design and potential alternatives.
| 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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