bts3205 Infineon Technologies Corporation, bts3205 Datasheet - Page 16

• Manufacturer Part Number: bts3205
• Description: Smart Low-side Power Switch Hitfet
• Manufacturer: Infineon Technologies Corporation

Figure 14
While demagnetization of inductive loads, energy has to be dissipated in the BTS3205G. This energy can be
calculated with following equation:
Following equation simplifies under assumption of
Data Sheet
E
E
=
=
(
1
-- -
2
V
5V
0
V
V
LI
bb
IN
I
V
C lamp
bb
D
2
L
D
+
⋅



V
1
Switching an Inductance
out CL
+
------------------------------------- -
V
(
out CL
)
(
)
V
⋅
bb
)
------------------------
–
V
V
out CL
bb
R
(
L



)
⋅
ln



1
+
------------------------
V
R
out CL
L
⋅
(
I
L
)



+
R
I
L
L
= 0
⋅
16
------
R
L
L
Protection FunctionsOvervoltage Protection
Smart Low-Side Power Switch
Turn off due to
over temperature or short circuit
InductiveLoad.emf
Rev. 1.0, 2007-12-06
BTS3205G
t
t
t
(1)
(2)