Tool/software:
Hello,
BMS for drone using 6s battery using BQ40z80 is made. The DSG and CHG FET in the BQ40z80 are enabled. The continuous discharge current is 60A. At time randomly, if the throttle given is varying rapidly, the CHG and DSG mosfet heats up rapidly. Why is that happening ?
https://e2e.ti.com/support/power-management-group/power-management/f/power-management-forum/1263152/bq40z80-dsg-fet-burning-up - This is a reference found, here the DSG resistance is reduced to 2.2k Ohms and Gate resistance is 100 Ohms.
In our design, the gate resistance is 10 Ohms and the DSG resistance is 4.02k. Is there a way this is affecting, if yes, how does it affect and how to calculate it beforehand ?
When there is huge throttle variations like 60% to 0% the bq enables the ASCCL, SS and CTOS register, why and how to make sure that doesn't happen.