TLE7250X Datasheet, PDF (16/34 Pages) Infineon Technologies AG – High Speed CAN-Transceiver

TLE7250XLE
TLE7250XSJ
Fail Safe Functions
5.4
Overtemperature Protection
The TLE7250X has an integrated overtemperature detection to protect the TLE7250X against thermal overstress
of the transmitter. The overtemperature protection is active in normal-operating mode and disabled in receive-only
mode. In case of an overtemperature condition, the temperature sensor will disable the transmitter (see Figure 1)
while the transceiver remains in normal-operating mode.
After the device has cooled down the transmitter is activated again (see Figure 9). A hysteresis is implemented
within the temperature sensor.
T_{JSD (shut down temperature)}
cool down
T_J
˂T
CANH
CANL
switch-on transmitter
t
t
TxD
t
RxD
t
Figure 9 Overtemperature protection
5.5
Delay Time for Mode Change
The HS CAN transceiver TLE7250X changes the mode of operation within the time window t_Mode. During the mode
change the normal-mode receiver and the RxD output are active and reflect the on the HS CAN input pins (see
as an example Figure 14 and Figure 15).
Data Sheet
16
Rev. 1.0, 2015-08-12