Part Number:BQ76200
Hello;
I'm considering using the BQ76200 in a new design and after reviewing the Test results in LSVA729A, I'm curious as to what cells (if any) were used for these tests, or whether an external supply was used. If real cells, I'm assuming that their configuration was nS1P (n = 4,5,.etc.)?.
I'm curious because Fig.25 appears to indicate the short circuit current was only ~10A (SRP = 0.1 V and Rsense = 10mOhm?)... did you limit the short circuit current to 10A?
Also, BATT+ dropped to zero within a few microseconds and then rebounded to ~10V after ~50us during the short, which (and please correct me if I'm wrong) is due to the cells internal impedance/resistance (?) Rebounding to 10V would then be sufficient to run the system until it opened the FET. Assuming of course, that you used real cells.
My application will use 4S25P yielding ~90AH capacity, and so the short circuit current will be much larger, but I'm "assuming" that the rebound voltage will still be about the same?.
Thanks in advance