Smart High-Side Power Switch
BTS5231-2GS
Diagnosis
4.3.3
Sense Enable Function
The diagnosis signals have to be switched on by a high signal at sense enable pin (SEN).
See
for details on the timing between SEN pin and diagnosis signal
I
IS
. Please
note that the diagnosis is disabled, when no signal is provided at pin SEN.
SEN
t
I
IS
t
sIS(SEN)
t
dIS(SEN)
t
sIS(SEN)
t
dIS(SEN)
t
SEN.emf
Figure 18
Timing of Sense Enable Signal
The SEN pin circuit is designed equal to the input pin. Please refer to
for details.
The resistors
R
lim
are recommended to limit the current through the sense pins IS1 and
IS2 in case of reverse polarity and over-voltage. Please refer to maximum ratings on
The stand-by current of the BTS5231-2GS is minimized, when both input pins
(IN1 and IN2) and the sense enable pin (SEN) are on low level.
Data Sheet
22
V1.2, 2008-09-01
INFINEON [ INFINEON TECHNOLOGIES AG ]
