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PDF TLE7232G Data sheet ( Hoja de datos )
| Número de pieza | TLE7232G | |
| Descripción | SPI Driver | |
| Fabricantes | Infineon Technologies | |
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Data Sheet, V1.0, September 2005
SPIDER - TLE 7232G
SPI Driver for Enhanced Relay Control
Eight Channel Low-Side Switch
Automotive Power
1 page  
SPI Driver for Enhanced Relay Control
SPIDER - TLE 7232G
Overview
1 Overview
The SPIDER - TLE 7232G is an eight channel low-side relay switch (1.2 Ω per channel)
in P-DSO-24-3 package providing embedded protective functions. The 16 bit serial
peripheral interface (SPI) is utilized for control and diagnosis of the device and the loads.
The SPI interface provides daisy-chain capability in order to assemble multiple devices
in one SPI chain by using the same number of micro-controller pins.
The SPIDER - TLE 7232G is equipped with one input pin that can be individually routed
to the output control of each channel thus offering complete flexibility in design and PCB-
layout. The input mapping as well as the boolean operation between input signal an
output control signal is configured via SPI.
The device provides full diagnosis of the load, which is open load, short to GND as well
as short circuit to Vbat detection and over load / over temperature indication. The SPI
diagnosis flags indicate latched fault conditions that may have occurred.
Each output stage is protected against short circuit. In case of over load, the current of
the affected channel is limited. There is a temperature sensor available for each channel
to protect the device in case of over temperature. The shut down behavior in case of over
load or over temperature can be configured via SPI for each channel individually.
1.1 Block Diagram
VDD
IN
RST
CS
SCLK
SI
VSO
SO
input map
boolean operation
output control
reset / stand-by
SPI
hardware
configuration
output monitor
diagnosis register
control,
diagnostic
and
protective
functions
temperature
sensor
short circuit
detection
gate
control
open load
detection
OUT0
OUT1
OUT2
OUT3
OUT4
OUT5
OUT6
OUT7
Figure 1 Block Diagram
Data Sheet
5
GND
Overview .emf
V1.0, 2005-09-30
5 Page 
SPI Driver for Enhanced Relay Control
SPIDER - TLE 7232G
Block Description and Electrical Characteristics
4 Block Description and Electrical Characteristics
4.1 Power Stages
The SPIDER - TLE 7232G is an eight channel low-side relay switch. The power stages
are built by N-channel vertical power MOSFET transistors.
4.1.1 Power Supply
The SPIDER - TLE 7232G is supplied by power supply line Vdd which is used for the
digital as well as the analog functions of the device including the gate control of the
power stages. There is a power-on reset function implemented for the supply line. After
start-up of the power supply, all SPI registers are reset to their default values. A capacitor
at pins VDD to GND is recommended.
The voltage at pin VSO is used by the driver of the SO line at the SPI. It is designed to
be functional at a wide voltage range.
There is a reset pin available. At low level at this pin, all registers are set to their default
values and the quiescent supply current is minimized.
4.1.2 Input Circuit
There is an input pin available at SPIDER - TLE 7232G to control the output stages.
IN
IIN
OR
&
MAP0 OUT0 BOL0
OR
&
OUT3 BOL3 MAP3
chcahncanhneanlne0nle1l 2
gate
control
SLE0
channel 7
chcahnannenl e5l 6
chcahnannenl e3l 4
gate
control
SLE3
Figure 4 Input Mapping and Boolean Operator
InputLogic.emf
Data Sheet
11 V1.0, 2005-09-30
11 Page | ||
| Páginas | Total 30 Páginas | |
| PDF Descargar | [ Datasheet TLE7232G.PDF ] | |
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