SLVSEW8B August 2019 – December 2019 TPS66020 , TPS66021
PRODUCTION DATA.
Table 3 summarizes the various fault types available and when the FLT shall be asserted.
| Fault Name | Fault | FLT | Description |
|---|---|---|---|
| PP5V_UVLO | PP5V undervoltage Lockout | Low | If PP5V input supply is below the PP5V UVLO threshold, the PP5V path is disabled automatically if enabled or remains disabled until the PP5V UVLO threshold is exceeded. If a SRC state is selected to be entered, the device will remain in the DISABLED state until the UVLO event is removed. The FLT pin will not be asserted. If a SRC state has been entered successfully and a UVLO event occurs, the device will enter the DISABLED state, and the FLT pin will be asserted. |
| PP5V_OVP | PP5V overvoltage Protection | Low | If a SRC state is selected to be entered or device currently is in a SRC state (SRC 1.5 A or SRC 3 A) and the PP5V input supply rises above the PP5V OVP threshold, the PP5V path is disabled automatically and the FLT pin will be asserted. |
| PP5V_ILIMIT | PP5V Current Limit Protection | Low | The PP5V power path has a closed-loop current limit protection. If the load current exceeds the selected current limit, the control loop will increase the voltage across the FET to compensate. Note: FLT will not be asserted unless the current limit event lasts longer than tILIMIT_FLT. |
| PP5V_OVT | PP5V overtemperature Protection | Low | If a SRC state is selected to be entered or device currently is in a SRC state (SRC 1.5 A or SRC 3 A) and the local temperature of PP5V power path exceeds TSD_PP5V_R while in current limit, the PP5V path is disabled automatically and the FLT pin will remain asserted. PP5V power path will remain disabled until temperature falls below TSD_PP5V_F. |
| PP5V_RCP | PP5V Reverse-Current Protection | Low | If a SRC state is selected to be entered or device currently is in a SRC state (SRC 1.5 A or SRC 3 A) and a reverse-current condition is detected, the PP5V path is disabled automatically and the FLT pin will be asserted. If the reverse-current condition is removed, the PP5V path will automatically re-enable. |
| VBUS_UVLO | VBUS undervoltage Lockout | Hi-Z | If VBUS supply is below the VBUS UVLO threshold, the PPHV path is disabled automatically if enabled or remains disabled. If the SNK state is selected to be entered, the device will remain in the DISABLED state until the UVLO event is removed. If the SNK state has been entered successfully and a UVLO event occurs, the PPHV path is disabled automatically. |
| VBUS_OVP(1) | VBUS overvoltage Protection | Low | If the SNK state is selected to be entered or device currently is in the SNK state and the VBUS supply rises above the VBUS OVP threshold, the PPHV path is disabled automatically and the FLT pin will be asserted. |
| VBUS_RCP | VBUS Reverse-Current Protection | Hi-Z | If the SNK state is selected to be entered or device currently is in the SNK state and a reverse-current condition is detected, the PPHV path is disabled automatically, but the FLT is not asserted.. If the reverse-current condition is removed, the PPHV path will automatically re-enable. |
| PPHV_OVT | PPHV overtemperature Protection | Low | If the SNK state is selected to be entered or device currently is in the SNK state and the local temperature of PPHV power path exceeds TSD_PPHV_R, the PPHV path is disabled automatically and the FLT pin will be asserted. PPHV power path will remain disabled until temperature falls below TSD_PPHV_F. |