ZHCSOF7B september 2022 – june 2023 TPS25990
PRODUCTION DATA
The TPS25990 employs an internal thermal shutdown mechanism to protect itself when the internal FET becomes too hot to operate safely. When the TPS25990 detects thermal overload, it shuts down. Thereafter it either remains latched-off until the device is power cycled or re-enabled, or restarts automatically after delay based on the device Auto-retry configuration.
The overtemperature threshold has a default threshold (TSD) which can be digitally programmed to a lower value using the OT_FLT register based on system needs.
Auto-Retry Configuration | Enter TSD | Exit TSD |
|---|---|---|
Latch-Off | VTEMP ≥ OT_FLT threshold or TJ ≥ TSD | VTEMP < OT_FLT - OTHys or TJ < TSD – TSDHYS VDD cycled to 0 V and then above VUVP(R) or EN/UVLO toggled below VSD(F) |
Auto-Retry | VTEMP ≥ OT_FLT threshold or TJ ≥ TSD | VTEMP < OT_FLT - OTHys or TJ < TSD – TSDHYS Retry Timer expired or VDD cycled to 0 V and then above VUVP(R) or EN/UVLO toggled below VSD(F) |