I am designing a 10S BMS using 2 BQ77915. I have followed the application notes and Datasheet to design the board. But, the CHG/DCHG Mosfets are not turning ON.
Test Bench: I am using Resistor Divider circuit to test the BMS. 100 ohm resistors have been connected. On the load side, I have connected 1K ohm resistor.
Few points I have checked:
1. AVDD Voltage is 3.0V on both the IC.
2. The Top IC CHG pin = 12.5V, DCHG pin: 12.5V
3. TS circuit is also made correctly by adding a 10K Resistor.
Please find the schematics in the attachment below for reference.
Please share your suggestions ASAP. I need to finish this design ASAP.