Other Parts Discussed in Thread: CSD19536KTT
We are using BQ76920 for our BMS design, to be used in12.8V, 90Ah EV grade LiFePO4 battery pack. During the testing phase, it is found that an overall temperature on PCB shot up to 65degree while charging the pack at 20A. But while discharging at 30A, the temperature was around 35degrees only. Is it a normal behaviour? Or, as seen in the specification of other battery packs, the charging is limited to half the current capacity of discharge, is there any specific reason to decide so?
The control side is found working fine, verified with data transferred from UART. Upper cut off, Lower cut off, short circuit tests were conducted successfully. For power side, we are using 4 nos of CSD19536KTT MOSFETS.
