Datasheet
OL_CurrLim2.vsd
t
d(off)
I
nom
t
d(off)
t
d(off)
IN
ON OFF
OVL
Condition
OVL
I
OUT
ST
CS
V
OUT
FAULT
(OVL)
SO
(Normal Function)
HH
Valid SPI cycles
I
D(lim2)
I*R
ON
HL HLHL HHHHHH
set
shutdown shutdown shutdown
reset
reset
V
Bat
reset
set
ILIM2 Failure
latched
ILIM2 Failure
latched
ILIM2 Failure
latched
set
t
d(off)
I
nom
t
d(off)
t
d(off)
IN
ON OFF
OVL
Condition
OVL
I
OUT
ST
CS
V
OUT
FAULT
(OVL)
SO
(Normal Function)
HH
Valid SPI cycles
I
D(lim2)
I*R
ON
HL HLHL HHHHHH
set
shutdown shutdown shutdown
reset
reset
V
Bat
reset
set
ILIM2 Failure
latched
ILIM2 Failure
latched
ILIM2 Failure
latched
set
Data Sheet 13 V1.5, 2012-08-17
TLE 8102 SG
Smart Dual Channel Powertrain Switch
Electrical and Functional Description of Blocks
Figure 10 Over Load Behavior - Latched Shutdown (current limit 2)
5.3.3.2 Over Temperature Protection
A dedicated temperature sensor for each channel detects if the temperature of its channel exceeds the over
temperature shutdown threshold. If the channel temperature exceeds the over temperature shutdown threshold,
the overheated channel is switched off immediately to prevent destruction. At the same time (no delay), the over
temperature flag Tn is
set. If the status outputs are used for diagnosis, the over temperature flag is cleared
immediately after the over temperature condition is no longer present. If using the SPI interface and fault pin for
diagnosis, the over temperature flag of the affected channel is cleared by the rising edge of the
CS signal after a
successful SPI transmission.
The restart response of the channel can be programmed via SPI
. If automatic autorestart is selected, after cooling
down, the channel is switched on again with thermal hysteresis Δ
T
j
. If latching shutdown is selected, the channel
remains switched off even after cooling down. The channel can be restarted only if first turned off with either the
parallel input or SPI. In addition, the channel must first be turned off before the the over temperature flag of the
affected channel can be cleared by the rising edge of the
CS signal after a successful SPI transmission.
For timing information, please refer to Figure 11 and Figure 12 for details.