Datasheet

OT_behaviour_Latch.vsd
HL
Two Bit
Diagnostic:
IN
I
OUT
ST
CS
V
OUT
FAULT
SO
OT
Valid SPI cycles
H
OT Flag:
LL
HH HH
HH (Normal Function)
L (No OT condition)
HL (OVL)
H (OT)
reset
reset
set
set
reset
ONOFF
Thermal shutdown
Output channel
with OT condition
No OT condition
HL
H
rewritten
OT Failure
latched
HL
Two Bit
Diagnostic:
IN
I
OUT
ST
CS
V
OUT
FAULT
SO
OT
Valid SPI cycles
H
OT Flag:
LL
HH HH
HH (Normal Function)
L (No OT condition)
HL (OVL)
H (OT)
reset
reset
set
set
reset
ONOFF
Thermal shutdown
Output channel
with OT condition
No OT condition
HL
H
rewritten
OT Failure
latched
Data Sheet 15 V1.5, 2012-08-17
TLE 8102 SG
Smart Dual Channel Powertrain Switch
Electrical and Functional Description of Blocks
Figure 12 Over Temperature Behavior - Latched Shutdown
5.3.4 Reverse Current
In the case of reverse polarity when outputs are turned on, the power stages of the TLE8102SG are able to
conduct reverse current
I
rev
, defined as current that flows from ground to the output pin. Please note that neither
the over load, over temperature, nor current sense diagnostics are functional in reverse current operation.
Additionally, it is possible for the
supply current I
VDD
to be greater than 5 mA.
5.3.5 Reverse Polarity Protection
In the case of reverse polarity when outputs are turned off, the intrinsic body diode of the power transistor causes
power dissipation. The reverse current through the intrinsic body diode has to be limited by the connected load.
The
V
DD
supply pin must be protected against reverse polarity externally. Please note that neither the over load,
over temperature, nor current sense diagnostics are functional in reverse current operation.