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Número de pieza | BTS50080-1TEB | |
Descripción | Smart High-Side Power Switch | |
Fabricantes | Infineon Technologies | |
Logotipo | ||
Hay una vista previa y un enlace de descarga de BTS50080-1TEB (archivo pdf) en la parte inferior de esta página. Total 27 Páginas | ||
No Preview Available ! Datasheet, Rev. 1.0, Aug. 2008
BTS50080-1TEB
Smart High-Side Power Switch
PROFET™
One Channel
Automotive Power
1 page 2 Block Diagram and Terms
2.1 Block Diagram
Smart High-Side Power Switch
BTS50080-1TEB
Block Diagram and Terms
logic IC
Rbb
IN
IIN
VIS
IS
VIN IIS
RIS
driver
logic
voltage sensor
over
temperature
gate control
&
charge pump
clamp for
inductive load
current
limitation
load current
sense
forward voltage drop detection
Figure 1 Block Diagram
2.2 Terms
Following figure shows all terms used in this data sheet.
base chip
Vbb
T
OUT
IL
Overview .emf
V bb V bIN
V IN
V bIS
IIN
RIN
V IS
IIS
RIS
Ibb
IN VBB
BTS50080-1TEB
IS OUT
Figure 2 Terms
V ON,
VOFF
IL
V OUT
Terms.emf
Datasheet
5 Rev. 1.0, 2008-08-28
5 Page Smart High-Side Power Switch
BTS50080-1TEB
Power Stages
VOUT
Vbb
VOUT(CL)
ON
VON(CL)
OFF
t
IL
Figure 8 Switching an Inductance
t
InductiveLoad.emf
5.3.1
Maximum Load Inductance
While de-energizing inductive loads, energy has to be dissipated in the BTS50080-1TEB. This energy can be
calculated via the following equation:
E = VON(CL) ⋅
V----b--b----–------V---O----N---(--C---L---)--
RL
⋅ ln1 +
--V---O---N---R-(-C-L--L--⋅-)--I--L–-----V---b---b
+ IL
⋅
--L---
RL
In the event of de-energizing very low ohmic inductances (RL≈0) the following, simplified equation can be used:
E
=
12--
LI
2
L
⋅
---------V---O----N---(-C---L---)--------
VON(CL) – Vbb
The energy, which is converted into heat, is limited by the thermal design of the component. For given starting
currents the maximum allowed inductance is therefore limited. See Figure 9 for the maximum allowed inductance
at Vbb=12V.
Datasheet
11 Rev. 1.0, 2008-08-28
11 Page |
Páginas | Total 27 Páginas | |
PDF Descargar | [ Datasheet BTS50080-1TEB.PDF ] |
Número de pieza | Descripción | Fabricantes |
BTS50080-1TEA | Smart High-Side Power Switch | Infineon Technologies |
BTS50080-1TEB | Smart High-Side Power Switch | Infineon Technologies |
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