®
PROFET BTS 740 S2
Figure 2c: Switching a lamp with current limit:
Figure 3a: Turn on into short circuit:
shut down by overtemperature, restart by cooling
IN
IN1
other channel: normal operation
ST
I
L1
I
L(lim)
V
OUT
I
L(SCr)
I
L
t
off(SC)
IS 1 = 0
I
IS
ST 1
t
t
Heating up of the chip may require several milliseconds, depending
on external conditions
Figure 2d: Switching an inductive load
IN
Figure 3b: Turn on into short circuit:
shut down by overtemperature, restart by cooling
(two parallel switched channels 1 and 2)
IN1/2
ST
I
+ I
L1 L2
2xI
L(lim)
V
OUT
I
L(SCr)
I
L
I
L(OL)
t
off(SC)
t
S 1= IS 2 = 0
*) if the time constant of load is too large, open-load-status may
occur
ST 1/2
t
ST1 and ST2 have to be configured as a 'Wired OR' function
ST1/2 with a single pull-up resistor.
Semiconductor Group
12
2003-Oct-01
INFINEON [ Infineon ]
