We are using this part TPS7B8150QDGNRQ1 in our C-Sample phase with the below configuration.
UBD_VP_PI is the reverse voltage and transient protected automotive battery voltage.VDZ5_PERM is 5V which is present always even during the sleep mode.
Output (VDZ%_PERM) has very lighter load and hence to protect the OUT PIN during OFF scenario (If Input voltage discharges faster than output voltage), we have used a protection diode D3280.
1. Please let us know if we have body diode present inside the chip itself or not?
2, Do we really need diode for this part?