TLE94106EL Datasheet, PDF (35/75 Pages) Infineon Technologies AG – Six half bridge power outputs

TLE94106EL
Half-Bridge Outputs
6.2.3 Temperature Monitoring
Temperature sensors are integrated in the power stages. The temperature monitoring circuit compares the
measured temperature to the warning and shutdown thresholds. If one or more temperature sensors reach
the warning temperature, the temperature pre-warning bit, TPW is set. This bit is latched and can only be
cleared via SPI. The outputs stages however remain activated.
If one or more temperature sensors reach the shut-down temperature threshold, all outputs are latched off.
The TSD bit in SYS_DIAG_1: Global Status 1 is set. All outputs remain deactivated until the TSD bit is cleared.
See Figure 11.
To resume normal functionality of the power switch (in the event the overtemperature condition disappears,
or to verify if the failure still exists) the microcontroller shall clear the TSD error bit in the status register to
reactivate the respective power switch.
T_j
T_jSD
T_jW
t
V_OUTx
Output is switched off if
ON
T_jSD is reached, can be
reactivated if TSD bit is
High Z
no error
cleared
t
TPW error bit
High
TPW is latched, can
Low
be cleared via SPI
t
no error
TSD error bit
High
TSD is latched, can be
Low
cleared via SPI
t
no error
Figure 11 Overtemperature Behavior
Data Sheet
35
1.0
2016-09-08