TLE7250G_13 Datasheet, PDF (11/22 Pages) Infineon Technologies AG – High Speed CAN Transceiver

TLE7250G
Fail-safe Functions
power-down reset
level V_CC(UV)
hysteresis
V_CC(UV,H)
NEN = 0
NRM = 1
normal-operating
mode
stand-by
mode
supply voltage V_CC
delay time undervoltage
recovery
t_Delay(UV)
normal-operating mode¹⁾
1) _{Assuming the logical signals on the pin NEN and on the pin NRM keep its values during the}
undervoltage event. In this case NEN remains “low“ and NRM remains “high“.
Figure 6 Undervoltage detection on V_CC
5.5
Overtemperature Protection
Overtemperature event
T_JSD
T_J
(shut-down temperature)
ΔT
Cool Down
CANH
CANL
switch-on transmitter
t
t
TxD
t
RxD
t
Figure 7 Overtemperature protection
The TLE7250G has an integrated overtemperature detection circuit to protect the device against thermal
overstress of the transmitter. In case of an overtemperature condition, the temperature sensor will disable the
transmitter (see Figure 1). After the device cools down, the transmitter is activated again (see Figure 7).
A hysteresis is implemented within the temperature sensor.
Data Sheet
11
Rev. 1.1, 2013-07-22