ZHCSJQ2A May 2019 – August 2019 TPS2596
PRODUCTION DATA.
Table 3 summarizes the protection response to various fault conditions.
| Event / Fault | Protection Response | FLT Asserted | FLT Delay |
|---|---|---|---|
| Overtemperature | Shutdown | Yes | |
| Undervoltage | Cut-off | No | |
| Overvoltage | Clamp (OVC - TPS25962x only) | No | |
| Cut-off (OVLO - TPS25963x only) | Yes | tOVLO | |
| Overcurrent | Current Limit | No | |
| Short-Circuit | Current Limit | No | |
| ILM Pin Short to GND | Shut down | Yes | |
| ILM Pin Open | Shut down | No |
When the device turns off due to one of these fault conditions, the FLT pin is pulled low.
Power cycling the part or pulling the EN/UVLO pin voltage below VSD clears the fault and the FLT pin is de-asserted. It also clears the tTSD,RST timer (Auto-retry variants only). Pulling the EN/UVLO just below the UVLO threshold (VUVLO(F)) has no impact on the device in this condition. This is true for both Latch-off (TPS2596x0) and Auto-retry (TPS2596x1) variants.
For Auto-retry (TPS2596x1) variants, at the end of the tTSD,RST timer after a fault, the device restarts automatically and the FLT pin is de-asserted.