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PDF BTS5235-2G Data sheet ( Hoja de datos )
| Número de pieza | BTS5235-2G | |
| Descripción | Smart High-Side Power Switch | |
| Fabricantes | Infineon Technologies | |
| Logotipo |  |
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Data Sheet, Rev.1.1, Sep 2008
BTS5235-2G
Smart High-Side Power Switch
Automotive Power
1 page  
Smart High-Side Power Switch
BTS5235-2G
Block Diagram
2 Block Diagram
The BTS5235-2G is a dual channel high-side power switch (two times 60 mΩ) in PG-DSO-20-43 package
providing embedded protective functions.
The Enhanced IntelliSense pins IS1 and IS2 provide a sophisticated diagnostic feedback signal including current
sense function, over load and over temperature alerts in ON-state and open load alert in OFF-state. The diagnosis
signals can be switched on and off by the sense enable pin SEN.
An integrated ground resistor as well as integrated resistors at each input pin (IN1, IN2, SEN) reduce external
components to a minimum.
The power transistor is built by a N-channel vertical power MOSFET with charge pump.
The inputs are ground referenced CMOS compatible. The device is monolithically integrated in Smart SIPMOS
technology.
channel 1
IN1
IS1
SEN
internal
power
supply
ESD
protection
channel 2
IN2
IS2
logic
load current
sense
gate control
&
charge pump
open load
detection
clamp for
inductive load
multi step
load current
limitation
temperature sensor
over load detection
control and protection circuit
equivalent to
channel 1
RGND
GND
Figure 1 Block Diagram
VBB
OUT1
OUT2
Data Sheet
5 Rev.1.1, 2007-09-01
5 Page 
Smart High-Side Power Switch
BTS5235-2G
Block Description and Electrical Characteristics
A high signal at the input pin causes the power DMOS to switch on with a dedicated slope, which is optimized in
terms of EMC emission.
IN
VOUT
90%
70%
30%
10%
tON
dV /dtON
Figure 6 Switching a Load (resistive)
tOFF t
70%
dV /dtOFF
30%
t
SwitchOn.emf
5.1.3
Inductive Output Clamp
When switching off inductive loads with high-side switches, the voltage VOUT drops below ground potential,
because the inductance intends to continue driving the current.
Vbb
VBB
GND
IL
OUT VOUT
L,
RL
Figure 7 Output Clamp (OUT1 and OUT2)
OutputClamp.emf
To prevent destruction of the device, there is a voltage clamp mechanism implemented that keeps that negative
output voltage at a certain level (VOUT(CL)). See Figure 7 and Figure 8 for details. Nevertheless, the maximum
allowed load inductance is limited.
VOUT
Vbb
0
VOUT(CL)
IL
IN = 5V
Figure 8 Switching an Inductance
IN = 0V
t
t
InductiveLoad.emf
Data Sheet
11 Rev.1.1, 2007-09-01
11 Page | ||
| Páginas | Total 25 Páginas | |
| PDF Descargar | [ Datasheet BTS5235-2G.PDF ] | |
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