BSP742-T Infineon Technologies Corporation, BSP742-T Datasheet - Page 8

• Manufacturer Part Number: BSP742-T
• Description: Inexpensive High Side Switches
• Manufacturer: Infineon Technologies Corporation

V
V
GND disconnect
GND disconnect with GND pull up
bb
bb
V
IN
V
IN
IN
IN
PROFET
GND
V
PROFET
bb
GND
V
V
bb
GND
V
GND
OUT
OUT
Page 8
E
V bb disconnect with charged inductive
load
Inductive Load switch-off energy
dissipation
Energy stored in load inductance: E
While demagnetizing load inductance,
E
with an approximate solution for R
V
the enérgy dissipated in PROFET is
=
AS
bb
A S
=
= E
E
2
I
high
bb
L
bb
*
*
R
+ E
L
L
* (
L
IN
- E
IN
V
b b
R
+
PROFET
= V
|
GND
PROFET
V
V
GND
bb
O U T C L
V
ON(CL)
bb
(
OUT
)|
) * ln (
* i
OUT
L
E AS
L
L
> 0Ω:
Z
(t) dt,
= ½ * L * I
L
{
2003-06-23
R
1
L
L
+
BSP 742 T
|
V
I
E
L
O U T C L
E
E Load
L
R
*
L
2
R
(
L
)
|
)