Original question:
Tool/software:
Hi team,
May I know TPS25730 CAP_MIS output status when PD supply and capability is well matched? This pin will output high or low?
And if the PD supply capability is mismatch, this pin output toggle. Does it means CAP_MIS will keep flipping between high and low? What is the flipping frequency?
What is the purpose for FAULT_IN pin? What kind of use case does it intend for? And how should we connect this pin if we want to use it?
Thank you!
Yunjing
Hello,
May I know TPS25730 CAP_MIS output status when PD supply and capability is well matched? This pin will output high or low?
The CAP_MIS pin is an open drain output and therefor must be connected to LDO_3V3 via a 10K resistor (recommended). When well matched the CAP_MIS will be in the high-z state, so if properly terminated the pin will be high due to the pullup.
And if the PD supply capability is mismatch, this pin output toggle. Does it means CAP_MIS will keep flipping between high and low? What is the flipping frequency?
0.5 cycles per second.
What is the purpose for FAULT_IN pin? What kind of use case does it intend for? And how should we connect this pin if we want to use it?
The fault pin is an input to disable the port and force a hard reset. Pull the pin high to LDO_3V3 and the connect to an open drain pin of an MCU or logic device.
Regards,
Chris
