Dear All,
I am designing a battery pack composed of 15 series LiFePO4 cells, each one of 20Ah for a small UPS system.
As for the cell balancing function, I intend to employ two IC BQ77908A to monitor the 15 cells. Nevertheless, as the IC supports up to 8 series cells, I would like to know if is possible to configure a stackable arrangement of both ICs, in order to monitor the 15 cells.
I have checked the possibility to use IC BQ76PL536A to perform such monitoring, but this last one needs external components to balancing, which may increase the costs.
The design takes into account IC 77PL157A4225 for secondary protection and BQ34Z100 for pack fuel gauge.
So, please let me know if the stackable configuration of BQ77908 is possible.
Thank you in advance.