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PDF BTS5241L Data sheet ( Hoja de datos )
| Número de pieza | BTS5241L | |
| Descripción | Smart High-Side Power Switch PROFET | |
| Fabricantes | Infineon | |
| Logotipo |  |
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Data Sheet, V1.0, February 2004
BTS 5241L
Smart High-Side Power Switch
PROFET
Two Channels, 25 mΩ
Automotive Power
Never stop thinking.
1 page  
Smart High-Side Power Switch
BTS 5241L
Overview
1 Overview
The BTS 5241L is a dual channel high-side power switch (two times 25 mΩ) in
P-DSO-12-2 power package providing embedded protective functions including
ReverSave.
ReverSave is a protection feature that causes the power transistors to switch on in case
of reverse polarity. As a result, the power dissipation is reduced to almost forward
condition.
The Enhanced IntelliSense pins IS1 and IS2 provide a sophisticated diagnostic feedback
signal including current sense function and open load 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.
1.1 Block Diagram
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
temperature
sensor
ReverSave
clamp for
inductive
load
multi step
load current
limitation
control and protection circuit
equivalent to
channel 1
Figure 1 Block Diagram
RGND
GND
VBB
OUT1
OUT2
Data Sheet
5 V1.0, 2004-02-27
5 Page 
Smart High-Side Power Switch
BTS 5241L
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
4.1.3 Inductive Output Clamp
When switching off inductive loads with high-side switches, the potential at pin OUT
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.
Data Sheet
11 V1.0, 2004-02-27
11 Page | ||
| Páginas | Total 28 Páginas | |
| PDF Descargar | [ Datasheet BTS5241L.PDF ] | |
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