Other Parts Discussed in Thread: TIDA-01093
Hi
The customer design with two pieces of BQ76930 are cascaded to monitor 20S batteries.
The status of the CHG and DSG of the two BQ76930s read by the MCU, and then the MUC controls the logic chip (output 12V) to control the CHG and DSG MOS.
During the charging test, it was found that when the CHG MOS was turned off and the DSG MOS was turned on, the charger was able to charge; and the CHG MOS heated up, at this time Vgs=3.65V, Vds=3.6V; after disconnecting the charger, Vgs and Vds has no voltage.
Please give some suggestion about this problem.
Thanks
Star