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PDF BTS5672E Data sheet ( Hoja de datos )
| Número de pieza | BTS5672E | |
| Descripción | SPI Power Controller | |
| Fabricantes | Infineon Technologies | |
| Logotipo |  |
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Data Sheet, Rev. 1.0, Jan. 2008
SPOC - BTS5672E
SPI Power Controller
Automotive Power
1 page  
2 Block Diagram
SPOC - BTS5672E
Block Diagram
VDD
IN0
IN1
IN2
IN3
IN4
IN5
IS
LH I
CS
SC LK
SO
SI
pow er
s upply
ESD
prot ec t ion
driv er
logic
tem perature
sensor
gate control
&
charge pum p
load current
sense
clam p for
induc t iv e
load
load current
lim itation
channel
01
23
45
current sense m ultiplexer
lim p hom e control
sw itch bypass
m onitor
PW M control
SPI
GND
Figure 1 Block Diagram SPOC - BTS5672E
VBB
OUT5
OUT4
OUT3
OUT2
OUT1
OUT0
Data Sheet
5 Rev. 1.0, 2008-01-22
5 Page 
SPOC - BTS5672E
Power Supply
5 Power Supply
The SPOC - BTS5672E is supplied by two supply voltages VBB and VDD. The VBB supply line is used by the power
switches. The VDD supply line is used by the SPI related circuitry and for driving the SO line. A capacitor between
pins VDD and GND is recommended as shown in Figure 23.
There is a power-on reset function implemented for the VDD logic power supply. After start-up of the logic power
supply, all SPI registers are reset to their default values. The SPI interface including daisy chain function is active
as soon as VDD is provided in the specified range independent of VBB. The first SPI transmission after a reset
contains at pin SO the read information from register OUT, the transmission error bit TER is set.
5.1 Power Supply Modes
The following table shows all possible power supply modes for VBB, VDD and the pin LHI.
Power Supply Modes Off Off SPI on Reset
VBB 0 V 0 V 0 V 0 V
VDD 0 V 0 V 5 V 5 V
LHI 0 V 5 V 0 V 5 V
PROFET operating
–
–
–
–
Limp home
––––
SPI (logic)
– – ✓ reset
Stand-by current
––––
Idle current
––––
Diagnosis
––––
1) SPI read only.
2) When DCR.MUX = 111b .
3) When all channels are in OFF-state and DCR.MUX!= 111b.
4) Current sense disabled in limp home mode.
Off
13.5 V
0V
0V
–
–
reset
✓
–
–
Limp Home
mode
without SPI
13.5 V
0V
5V
✓
✓
reset
–
–
–
Normal
operation
13.5 V
5V
0V
✓
–
✓
✓2)
✓3)
✓
Limp Home
mode with
SPI 1)
13.5 V
5V
5V
✓
✓
reset
–
–
✓4)
Stand-by mode is entered as soon as the current sense multiplexer (DCR.MUX) is in default (stand-by) position 1).
Additionally, all thermal latches are cleared automatically. As soon as stand-by mode is entered, register
HWCR.STB is set. To wake-up the device, the current sense multiplexer (DCR.MUX) is programmed different to
default (stand-by) position.
Idle mode parameters are valid, when all channels are switched off, but the current sense multiplexer is not in
default position, and VDD supply is available.
Limp home (LHI = high) will wake-up the device and is working without VDD supply. As a result, all channels can
be activated via the dedicated input pins.
1) Not affected by the inputs state
Data Sheet
11
Rev. 1.0, 2008-01-22
11 Page | ||
| Páginas | Total 30 Páginas | |
| PDF Descargar | [ Datasheet BTS5672E.PDF ] | |
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