BTS733L1 Datasheet, PDF (12/14 Pages) Siemens Semiconductor Group – Smart Two Channel Highside Power Switch (Overload protection Current limitation Short-circuit protection Thermal shutdown)

Figure 3b: Turn on into short circuit:
shut down by overtemperature, restart by cooling
(two parallel switched channels 1 and 2)
IN1/2
I +I
L1 L2
I _L(SCp)
BTS 733 L1
Figure 5a: Open load: detection in ON-state, turn
on/off to open load
IN
t
ST
d(ST)
td(ST _OL4)
I _L(SCr)
V
OUT
toff(SC)
ST1/2
t
ST1 and ST2 have to be configured as a 'Wired OR' function
ST1/2 with a single pull-up resistor.
Figure 4a: Overtemperature:
Reset if T_j <T_jt
IN
I
L
open
t
The status delay td(ST OL4) is for differentiation between the failure
modes "open load in ON-state" and "overtemperature"; td(ST OL4)
only appears after turn off to open load.
Figure 5b: Open load: detection in ON-state, open
load occurs in on-state
IN
ST
td(ST _OL1)
t _{d(ST OL2)}
ST
V
OUT
V
OUT
T
J
I
normal
L
open
normal
t
t
td(ST OL1) = 20 µs typ., td(ST OL2) = 10 µs typ
Semiconductor Group
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