TLE7250V_15 Datasheet, PDF (16/34 Pages) Infineon Technologies AG – High Speed CAN-Transceiver

TLE7250VLE
TLE7250VSJ
Fail Safe Functions
5.4
Overtemperature Protection
The TLE7250V has an integrated overtemperature detection to protect the TLE7250V against thermal overstress
of the transmitter. The overtemperature protection is active in normal-operating mode and disabled in power-save
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 TLE7250V changes the mode of operation within the time window t_Mode. During the mode
change the RxD output pin is permanently set to logical “high” and does not reflect the status on the CANH and
CANL input pins (see as an example Figure 14 and Figure 15).
Data Sheet
16
Rev. 1.0, 2015-08-12