Figure 5. Short-to-VBUS

3.8

Hardware fault management

Table 9. Hardware fault management

Parameter

Fault type

Behavior

Ambient

temperature

Thermal protection

See Section 3.4 Ambient temperature adaptive power and

protection

VDD

Overvoltage

Goes to ErrorRecovery (ER).

VBUS path not asserted. Force detach (remove termination).

Re-init connection

Undervoltage

VBUS

Overvoltage

Goes to ErrorRecovery (ER).

De-assert VBUS path. Force detach (remove termination). Re-

init connection

Undervoltage (3.125 ms blanking

time)

VBUS not valid during attach

CC pin and

VCONN switch

1.

Short to VBUS (up to 22 V)

2.

Overvoltage (6 V)

3.

Undervoltage (2.65 V)

4.

Reverse voltage

5.

Overcurrent (80 mA)

6.

Overheating

7.

ESD

1.

Power switch opened. ErrorRecovery

2.

Power switch opened. ErrorRecovery

3.

Power switch opened

4.

Power switch opened

5.

Current limit

6.

Power switch opened. ErrorRecovery

7.

Discharge event

3.9

Debug accessory detection

This mode is to be selected in order to access the STUSB4761 configuration via ST proprietary unstructured VDM

(see Section 3.1 PDO customization).

STUSB4761

Hardware fault management

DS13141 - Rev 3

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