sp000221229 Infineon Technologies Corporation, sp000221229 Datasheet - Page 9

• Manufacturer Part Number: sp000221229
• Description: Smart Power High-side-switch For Industrial Applications
• Manufacturer: Infineon Technologies Corporation

V
Open-load detection
OFF-state diagnostic condition:
V
GND disconnect
GND disconnect with GND pull up
V
bb
Logic
bb
OUT
unit
OFF
V
IN
> 3V typ.; IN=low
V
V
ST
IN
V
ST
Open load
detection
IN
ST
IN
ST
PROFET
Signal GND
GND
PROFET
V
I
bb
GND
L(OL)
V
V
bb
GND
V
GND
OUT
OUT
V
OUT
Page 9
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
high
E
2
I
bb
L
bb
*
*
R
+ E
L
L
* (
L
IN
ST
- E
IN
ST
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
> 0 :
Z
(t) dt,
= ½ * L * I
L
{
2006-03-09
R
1
L
L
ISP 742 RI
|
V
I
E
L
O U T C L
E
E Load
L
R
*
2
L
R
(
L
)
|
)