SLUA906A January 2020 – September 2020 BQ77915
The following stacking configuration represents a battery pack protection system for up to 10-S cell pack. Figure 1-1 shows the configuration of the two devices. For configurations with less than 10-S cell pack, only use the two devices. For configurations with 11-S to 15-S cell packs, use three devices. For configurations with 16-S to 20-S cell packs, use four devices.
For configurations where one or more of the devices supports a lower cell count (for example, three or four) than the rest of the stacked devices, TI recommends using the uppermost device on the stack to support the highest cell count. For example, if the user wants to protect a 9-S cell pack, the top device would support five cells and the bottom device would support four cells. If the user wanted to protect a 17-S cell pack, the top device supports five cells and the lower devices each support four cells. When possible, configure each device to support the same number of cells.