Ask about overcurrent sensing in the STPMIC1APQR.
We are checking to see if the overcurrent feature works fine.
If we set register OCP_SWOUT_LIM=0 (0.6mA) of the STPMIC1APQR
and put a resistor between SWOUT and GND to allow 1.8mA to flow,
it will operate normally, limit the current to 0.6mA,
and power will drop after 30msec.
And an interrupt signal is generated.
However, if we set register OCP_SWOUT_LIM = 1 (1.1mA) of the STPMIC1APQR
and put a resistor between SWOUT and GND so that 1.8mA flows.
After overcurrent detection, the power supply drops to close to 1V to maintain the voltage level.
The current continues to flow at 300mA.
And, No interrupt signal occurs.
The evaluation uses an evaluation board(STM32MP157F-EV1) from ST and a board developed by our company,
but the same thing has occurred.
Is the behavior when OCP_SWOUT_LIM = 1 (1.1mA) normal behavior?
If the operation is normal please tell us the following,
a)Mechanism by which behavior occurs when OCP_SWOUT_LIM = 1 (1.1mA)
b)Current of about 300 mA continues, but how far does the current flow at the maximum?
