Data Sheet

15

Rev. 1.0

2017-08-09

HS CAN Transceiver

High Speed CAN Transceiver

Fail safe functions

7.4

Overtemperature protection

The TLE9250 has an integrated overtemperature detection to protect the TLE9250 against thermal overstress

of the transmitter. The overtemperature protection is only active in Normal-operating mode. In case of an

overtemperature condition, the temperature sensor will disable the transmitter 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.

Figure 9

Overtemperature protection

7.5

Delay time for mode change

mode change from Power-save mode to non-low power mode the RxD output pin is permanently set to logical

“high” and does not reflect the status on the CANH and CANL input pins.

After the mode change is completed, the transceiver TLE9250 releases the RxD output pin.

TxD

t

t

CANH

CANL

RxD

t

t

switch-on transmitter

T

cool down