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PDF BTS5246-2L Data sheet ( Hoja de datos )
| Número de pieza | BTS5246-2L | |
| Descripción | Smart High-Side Power Switch | |
| Fabricantes | Infineon Technologies | |
| Logotipo |  |
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Target Data Sheet, V1.2, Aug 2006
BTS 5246-2L
Smart High-Side Power Switch
PROFET
Two Channels, 19 mΩ
Automotive Power
Never stop thinking.
1 page  
Smart High-Side Power Switch
BTS 5246-2L
Overview
1 Overview
The BTS 5246-2L is a dual channel high-side power switch (Two Channels, 19 mΩ) in
PG-DSO-12-9 power package providing embedded protective functions. Integrated
resistors at each input pin (IN1, IN2, CLA) reduce external components.
The load current limitation can be adjusted in two steps by the current limit adjust pin
(CLA).
The IntelliSense pins IS1 and IS2 provide a sophisticated diagnostic feedback signal
including current sense function, open load in off state and short circuit protection.
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
CLA
internal
power
supply
ESD
protection
logic
load current
sense
gate control
&
charge pump
open load
detection
temperature
sensor
clamp for
inductive load
multi step
load current
limitation
VBB
OUT1
channel 2
IN2
IS2
control and protection circuit
equivalent to
channel 1
Figure 1 Block Diagram
GND
OUT2
Target Data Sheet
5
V1.2, 2006-08-14
5 Page 
Smart High-Side Power Switch
BTS 5246-2L
Power Stages
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%
tON
Figure 6
30%
10% dV /dtON
Switching a Load (resistive)
tOFF t
70%
dV /
dtOFF
40%
t
SwitchOn.emf
4.1.3 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
OutputClamp .em
Figure 7 Output Clamp (OUT1 and OUT2)
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.
Target Data Sheet
11
V1.2, 2006-08-14
11 Page | ||
| Páginas | Total 30 Páginas | |
| PDF Descargar | [ Datasheet BTS5246-2L.PDF ] | |
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