Datasheet

Smart High-Side Power Switch
BTS50080-1TEB
Power Stages
Datasheet 12 Rev. 1.0, 2008-08-28
Figure 9 Maximum load inductance for single pulse,
T
j(0)
≤ 150°C.
5.4 Inverse load current capability
The BTS50080-1TEB can be operated under inverse load current condition (I
L
< 0 A; +V
OUT
> +V
bb
> 0 V). The
device can not block the current flow during inverse mode.
1)
In ON condition a voltage drop across the activated channel of -V
ON(inv)
=R
ON(inv)
*(-I
L
) can be observed.
In OFF condition a voltage drop across the intrinsic body diode of -
V
OFF(inv)
=f(-I
L
) can be observed.
As long as the inverse current does not exceed |-
I
L
| ≤ |-I
L(inv)
| the BTS50080-1TEB will be able to remain in ON
mode.
Figure 10 Inverse load current operation
Note: Activation of any protection mechanism will not block the current flow. Overtemperature detection and
current sense is not functional during inverse mode.
1) For reverse polarity protection (I
L
< 0 A; V
bb
< 0 V) please have a look at Chapter 6.3.
0,01
0,1
1
10
1 10 100
A
L
mH
T
j(o)
≤ 150°C
V
bb
= 12 V
Inverse_capability. emf
-I
L
+V
bb
control chip
base chip
V
ON(inv)
GND
OUT
VBB
V
bb
lo gi c
+
-