ZHCSQ76 December 2022 TPS25961
PRODUCTION DATA
Table 7-3 summarizes the protection response to various fault conditions.
| Event / Fault | Protection Response | Fault Latched Internally |
|---|---|---|
Steady-state | N/A | N/A |
| Overtemperature | Shutdown | Yes |
| Undervoltage | Cut-off | No |
| Overvoltage | Cut-off | No |
| Overcurrent | Current Limit | No |
| Short-circuit | Current Limit | No |
Once the device turns off due to a latched fault, power cycling the part or pulling the EN/UVLO pin voltage below VSD(F) clears the fault. Pulling the EN/UVLO just below the UVLO threshold has no impact on the device in this condition.
At the end of the tTSD,RST timer after a latched fault, the device will attempt to automatically restart 3 times. If the fault was caused by a transient condition which goes away and the device is able to recover and reach steady state, it clears the fault counter.
If the fault is persistent, the device will eventually shut down completely after 3 attempts and then remain latched-off till it's power cycled.