The TPD4S480
works in conjunction with the PD controller to provide the following functionality in USB-PD
EPR:
- Short to VBUS protection for direct
shorts to CC1 and CC2 pins of the Type-C connector.
- Short to VBUS protection for the liquid
detection circuitry that is connected to the SBU1 and SBU2 pins of the Type-C connector,
if the liquid detection feature is implemented.
- Voltage level translation from up the EPR
maximum voltage down to the operation range of the VBUS pins of the PD controller.
- Gate drive for a high voltage NMOS
transistor to allow the internal 5V power path to be used to source 5V in systems that
only require a 5V output.