Hello team,
lease see below customer question:
We are using this in an application where we will power from either USB or another discrete power supply. While powered by the discrete power supply, we may be connected to a USB host port. I am concerned that the charger will not know what the source of the voltage is and will negotiate the current with the USB even though it is not the source providing power (I am using your OR-ing FET controllers to supply the power to the charger). Does the charger look at the voltage input to know if it is on a USB port?