TLE6251G_08 Datasheet, PDF (9/32 Pages) Infineon Technologies AG – High Speed CAN-Transceiver with Wake Detection

TLE 6251 G
Reduced Electromagnetic Emission
The bus driver has an implemented control to reduce the electromagnetic emission (EME). This
is achieved by controlling the symmetry of the slope, resp. of CANH and CANL.
Overtemperature
The driver stages are protected against overtemperature. Exceeding the shutdown temperature
results in deactivation of the driving stages at CANH/L. To avoid a bit failure after cooling down,
the signals can be transmitted again only after a dominant to recessive edge at TxD.
Figure 3 shows the way how the transmission stage is deactivated and activated again. First an
overtemperature condition causes the transmission stage to deactivate. After the overtemperature
condition is no longer present, the transmission is only possible after the TxD bus signal has
changed to recessive level.
Failure
Overtemp
V_CC
Overtemperature
GND
t
TxD
V_CC
GND
CANH
V_CC
R
V_CC/2
t
D
R
t
AET03394.VSD
Figure 3
Release of the Transmission after Overtemperature
Final Data Sheet
9
Rev. 3.3, 2008-06-19