TLE7183QU Datasheet, PDF (17/28 Pages) Infineon Technologies AG – 3 Phase Driver IC Automotive Power

TLE7183QU
If the voltage of a charge pump buffer capacitors CBx reaches the undervoltage shut down level for a minimum
specified filter time, the gate-source voltage of all external MOSFETs will be actively pulled to low. In this situation
the short circuit detection of this output stage is deactivated to avoid a latching shut down of the driver.
If the charge pump buffer voltage recovers, the status of the output stages will match the input patterns again. This
allows an operation of the motor in case of undervoltage shut down without a reset by the µC.
Undervoltage shut down will not occur if V_S > 6 V, Q_G < 250 nC, f_PWM < 25 kHz, and the charge pump capacitors
CPx, CBx = 4.7 µF.
5.2.5 Overvoltage Shutdown
The TLE7183QU has an integrated overvoltage shut down to avoid destruction of the IC at high supply voltages.
The voltages at the pins Vs and VDH are monitored. The external MOSFETs will be switched off if one or both of
them exceed the overvoltage shut down level for more than the specified filter time. In addition, the overvoltage
condition will lead to a shut down of the charge pumps and a discharge of the charge pump capacitors. This results
in an undervoltage condition which will be indicated at the ERRx pins. During overvoltage shut down the external
MOSFETs and the charge pumps remain off until a reset is performed.
5.2.6 Overtemperature Warning
If the junction temperature is exceeding typ. 170°C, an overtemperature warning is reported at the ERRx pins.
However the driver IC will continue to operate in order not to disturb the application.
This warning is self-clearing and will be cleared if the junction temperature cools down again. It is up to the user
to protect the device from overtemperature destruction.
5.2.7 ERRx pins
The TLE7183QU has two status pins to provide diagnostic feedback to a µC. The outputs of these pins are 5V
push pull stages which are either high or low. Table 2 contains an overview. Some errors require a full reset of the
driver using one of the ENAx pins to return to normal operation. Please see Table 3 for details.
If multiple errors occur at the same time, only the one with the highest priority listed in Table 4 is reported. If the
device is disabled using one of the ENAx pins, only the errors Undervoltage and Overtemperature Warning are
reported. Other errors are not reported.
Table 2 Overview of Error Conditions
ERR1
Low
High
High
Low
ERR2
Low
Low
High
High
Driver conditions
no errors
Overtemperature Warning or Overvoltage Shut Down
Undervoltage Shut Down
Short Circuit Detection or Overcurrent Warning
Table 3 Behavior at different Error Conditions
Error condition
restart behavior
Shuts down...
Short Circuit Detection Latch, reset must be performed at ENAx pin All external Power -MOSFETs
Overcurrent Warning
Self clearing
Nothing
Undervoltage Shut Down Auto restart
All external Power -MOSFETs
Overvoltage Shut Down Latch, reset must be performed at ENAx pin All external Power -MOSFETs
Overtemperature Warning Self clearing
Nothing
Note: Errors do NOT lead to sleep mode. Sleep mode is only initiated with the INH pin. The latch and restart
behavior allows to distinguish between the different combined error types reported at the ERRx pins.
Data Sheet
17
Rev. 1.1, 2016-01-28