Part Number:BQ77915
Hi,
I'm using the AFE chip BQ7791500 for a 48V BMS system. There are 3 chips cascaded (as per the data sheet connection recommendations) to achieve this configuration. The cell voltages are reaching the ICs and are well within the required range. I ran a low current discharge to test the UV cutoff. When the cell voltages hit 2.9V, the DSG MOSFETs cutoff (CHG MOSFET still ON). However on load removal, the DSG MOSFETs did not turn back ON. Plus, when I connected the charger, the battery pack was not being charged even with CHG MOSFETs being ON for all the time. As far as I know, for charging the battery pack, DSG MOSFETs needn't be ON and CHG MOSFETs should be ON. Please let me know what could be the issue?
Thanks in advance!
Bharath B
