The BQ76922EVM (see BQ76922EVM User Guide) provides an example circuit implementation using the BQ76922. The EVM is a 3.0-inch × 4.9-inch 4-layer circuit card assembly and is designed for easy assembly, with cell connections at a terminal block on the left edge, and pack connections using a second terminal block on the top edge of the board. Wide trace areas are used, reducing voltage drops on the high current paths. Optional connections for hardware feature pins are on a separate terminal block on the top edge of the board. An on-board microcontroller is included for interfacing with a computer, with the accompanying USB connector located in the lower right corner. Configuration headers are included toward the right side of the board, and pushbutton switches for wake up and reset of the BQ76922 are located near the bottom edge of the board.

The board layout includes spark gaps with the reference designator prefix E. These spark gaps are fabricated with the board and no component is installed.

Figure 10-1 to Figure 10-8 show the board layout.

Figure 10-1 BQ76922EVM Top Silk Screen

Figure 10-2 BQ76922EVM Top Assembly

Figure 10-3 BQ76922EVM Top Layer

Figure 10-4 BQ76922EVM Layer 2

Figure 10-5 BQ76922EVM Layer 3

Figure 10-6 BQ76922EVM Bottom Layer

Figure 10-7 BQ76922EVM Bottom Silk Screen

Figure 10-8 BQ76922EVM Bottom Assembly