Datasheet

Smart High-Side Power Switch
BTS50080-1TEA
Protection Functions
Datasheet 16 Rev. 1.0, 2008-08-28
Figure 12 Overload Behavior
6.2 Short circuit impedance
The capability to handle single short circuit events depends on the battery voltage as well as on the primary and
secondary short impedance. Figure 13 outlines allowable combinations for a single short circuit event of
maximum, secondary inductance for given secondary resistance.
Figure 13 Short circuit
V_ON_detect .emf
t
V
ON
t
I
L
I
IN
t
t
m
I
Lx(SC)
t
d(SC1)
V
ONx
> V
ON(SC)
Τ
j
I
L
t
thermal hysteresis
t
I
IN
Over_Temp.emf
t
Overtemperature detectionV
ON(SC)
detection
short_circuit.emf
V
bb
IS
IN
PROFET
OUT
V
bb
10mΩ
5uH
R
SC
L
SC
LOAD
SHORT
CIRCUIT
0
2,5
5
7,5
10
12,5
15
0 50 100 150 200 250
mΩ
L
SC
R
SC
µH
V
bb
= 16V 18V 24V 30V