Tool/software:
Hi,
We use the BQ24780S for battery charge, and now, we have the below issue for this device:
1. We only connect the battery to system for the power supply, the system is work normal;
2. We connect the both adapter and battery for the power supply, the system is work normal;
3. Continuing the item#2 description, we remove the adapter and only keep the battery for the power supply, the battery discharging is very Rapid;
4. We test the gate electrode of the MOSFET(The Q35 in below schamatic diagram). the voltage is still has the 3.6-4.3V voltage, this is high level logic, and the DCIN is same as the voltage as the battery;
5. We have no idea why the Q35 is still open when we remove the adapter, plesae advsie how to solve this issue, thanks.
