SP000221218 INFINEON [Infineon Technologies AG], SP000221218 Datasheet - Page 11

• Manufacturer Part Number: SP000221218
• Description: Smart High-Side Power Switch for Industrial Applications
• Manufacturer: INFINEON [Infineon Technologies AG]

V
V
GND disconnect
GND disconnect with GND pull up
V
V bb disconnect with charged inductive
load
bb
bb
bb
V
IN
high
V
IN
IN
IN
IN
PROFET
PROFET
GND
GND
V
PROFET
V
bb
GND
bb
V
V
bb
GND
V
GND
OUT
OUT
OUT
Page 11
E
Inductive Load switch-off energy
dissipation
Energy stored in load inductance: E
While demagnetizing load inductance,
E
with an approximate solution for R
=
the enérgy dissipated in PROFET is
A S
AS
= E
E
2
bb
I
L
bb
*
*
R
+ E
L
L
IN
* (
L
- E
V
PROFET
b b
R
GND
V
= V
bb
|
V
O U T C L
ON(CL)
OUT
(
E AS
)|
Z
) * ln (
L
* i
L
{
R
L
L
L
> 0 :
L
(t) dt,
= ½ * L * I
2006-03-09
1
E
E
E Load
ITS 4142N
R
L
|
V
I
L
O U T C L
L
*
2
R
(
L
)
|
)