This reference design is a low standby and low ship mode current consumption 16S-17S LiFePO4 Li-ion battery pack design for telecom battery backup and emotorcycles. It was implemented for a 2-layer PCB. The 9S-15S AFE bq76940 monitors the lower 15 cells voltage and a two-channel general purpose amplifier LM2904B monitors the 16th and 17th battery cells voltage. The design protects the battery pack against overvoltage, undervoltage, overcurrent, and overtemperature, and it reduces energy consumption when in standby and shipping mode through a welldesigned auxiliary power supply strategy and a highly efficient, low quiescent current DC/DC converter LM5164, therefore allows longer shipping time and idle time.
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-17S Battery Pack Reference Design With Low Current Consumption | Jun. 28, 2019 | |
| Technical article | Fast and furious: designing longer-lasting 16S-17S Li-ion battery packs for e-moto | PDF | HTML | Nov. 21, 2019 |
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