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Número de pieza | BTS5016SDA | |
Descripción | Smart High-Side Power Switch | |
Fabricantes | Infineon Technologies | |
Logotipo | ||
Hay una vista previa y un enlace de descarga de BTS5016SDA (archivo pdf) en la parte inferior de esta página. Total 27 Páginas | ||
No Preview Available ! Datasheet, Rev. 1.1, Nov. 2008
BTS5016SDA
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
BTS5016SDA
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
Vbb VbIN
VIN
VbIS
IIN
RIN
IIS
VIS
RIS
Ibb
IN VBB
BTS5016SDA
IS OUT
Figure 2 Terms
VON
IL
VOUT
Terms.emf
Datasheet
5 Rev. 1.1, 2008-11-04
5 Page Smart High-Side Power Switch
BTS5016SDA
Power Stages
5.3 Output Inductive Clamp
When switching off inductive loads, the output voltage VOUT drops below ground potential due to the involved
inductance ( -diL/dt = -vL/L ; -VOUT ≅ -VL ).
Vbb
VON
VBB
IL
OUT VOUT
L,
RL
Figure 8 Output Clamp
OutputClamp .emf
To prevent destruction of the device, there is a voltage clamp mechanism implemented that keeps the voltage drop
across the device at a certain level (VON(CL)). See Figure 8 and Figure 9 for details. The maximum allowed load
inductance is limited.
VOUT
Vbb
VOUT(CL)
ON
VON(CL)
OFF
t
IL
Figure 9 Switching an Inductance
t
InductiveLoad.emf
5.3.1
Maximum Load Inductance
While de-energizing inductive loads, energy has to be dissipated in the BTS5016SDA. 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
Datasheet
11 Rev. 1.1, 2008-11-04
11 Page |
Páginas | Total 27 Páginas | |
PDF Descargar | [ Datasheet BTS5016SDA.PDF ] |
Número de pieza | Descripción | Fabricantes |
BTS5016SDA | Smart High-Side Power Switch | Infineon Technologies |
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