bts5235l Infineon Technologies Corporation, bts5235l Datasheet - Page 12

• Manufacturer Part Number: bts5235l
• Description: Smart High-side Power Switch
• Manufacturer: Infineon Technologies Corporation

Figure 8
Maximum Load Inductance
While demagnetization of inductive loads, energy has to be dissipated in the BTS 5235L.
This energy can be calculated with following equation:
This equation simplifies under the assumption of
The energy, which is converted into heat, is limited by the thermal design of the
component. See
Data Sheet
E
E
=
=
(
1
-- -
2
V
LI
bb
L
2
–
V
⋅
§
¨
©
V
OUT(CL)
Switching an Inductance
1
OUT(CL)
V
–
OUT
V
Figure 9
bb
0
I
---------------------- -
V
L
OUT(CL)
V
)
bb
⋅
V
---------------------- - ln
OUT(CL)
·
¸
¹
for the maximum allowed energy dissipation.
R
L
IN = 5V
⋅
Block Description and Electrical Characteristics
§
¨
©
1
–
---------------------- -
V
12
R
OUT(CL)
L
⋅
I
L
R
Smart High-Side Power Switch
·
¸
¹
L
= 0:
+
IN = 0V
I
L
⋅
------
R
L
L
t
t
V1.0, 2005-12-19
BTS 5235L
InductiveLoad.emf
(1)
(2)