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PDF TLE7231G Data sheet ( Hoja de datos )
| Número de pieza | TLE7231G | |
| Descripción | 4 channel low side driver | |
| Fabricantes | Infineon Technologies | |
| Logotipo |  |
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Datasheet, Rev. 1.0, February 2008
TLE7231G
www.DataSheet4U.net
SPIDER - 4 channel low side driver
Automotive Power
1 page  
2 Block Diagram
Figure 1 Block Diagram
RST
VDD
IN
CS
SCLK
SI
SO
input mux
input register
SPI
diagnosis register
VDDA
control,
diagnostic
and
protective
functions
SPI Driver for Enhanced Relay Control
SPIDER - TLE7231G
Block Diagram
temperature
sensor
short circuit
detection
gate
control
open load
detection
OUT0
OUT1
OUT2
OUT3
GND
Overview.emf
Datasheet
5 Rev. 1.0, 2008-02-28
5 Page 
SPI Driver for Enhanced Relay Control
SPIDER - TLE7231G
Power Supply
5 Power Supply
The TLE7231G is supplied by two power supply lines VDD and VDDA. The digital power supply line VDD is designed
to be functional at a very wide voltage range. The analog power supply VDDA supports 5 V supply.
Power-on reset functions have been implemented for both supply lines. After start-up of the power supply, all SPI
registers are reset to their default values and the device remains in idle mode. Capacitors at pins VDD - GND and
VDDA - GND are recommended.
A reset pin is available. At low logic level at this pin, all registers are set to their default values and the quiescent
supply currents are minimized.
The VDD supply line is used for the I/O buffer circuits of the SPI pins, therefore the voltage on the SO pin is always
related to this supply voltage. A capacitor between pins VDD and GND is recommended (especially in case of EMI).
To enable the Daisy chain functionality it is necessary to have VDD and VDDA in the specified functional range.
The device provides a sleep mode to minimize current consumption, which also resets the register banks. It is
controlled by a low active reset pin (RST) which disables the device and minimize the current consumption. The
table below gives an overview of the different power modes.
Table 2 Power modes1)
Power mode State Description
RESET
VDD
(low active)
SLEEP
Device at minimum current consumption
low
X
IDLE
Device operational, all channels OFF no
diagnosis activated
high
ON
ON
Device operational with enabled channels and high
ON
diagnostic currents active
1) low: pin input is digital low,
high: pin input is digital high,
X: pin state don’t care,
ON: voltage on this analog supply pin is in the specified functional range
VDDA SCLK
X 0 Hz
ON 0 Hz
ON 5 MHz
(max)
Datasheet
11 Rev. 1.0, 2008-02-28
11 Page | ||
| Páginas | Total 30 Páginas | |
| PDF Descargar | [ Datasheet TLE7231G.PDF ] | |
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