DRV8308_15 Datasheet, PDF (30/60 Pages) Texas Instruments – DRV8308 Brushless DC Motor Controller

DRV8308
SLVSCF7A – FEBRUARY 2014 – REVISED OCTOBER 2014
www.ti.com
8.3.13.7 Overtemperature (OTS)
To protect against any number of faults that could result in excessive power dissipation inside the device, the
DRV8308 device includes overtemperature protection.
Overtemperature protection activates if the temperature of the die exceeds the OTS threshold temperature
(T_TSD). If this occurs, the FAULTn terminal is pulled low, the device is disabled and the OTS bit in the FAULT
register is set. This OTS bit remains set until a 0 is written to the OTS bit.
If the RETRY bit is set after the temperature has fallen below the OTS threshold, the part re-enables itself after a
fixed delay of 5 s.
If the RETRY bit is not set, the part disables the pre-drivers until RESET is asserted, or until power has been
removed and re-applied to the device.
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