TLE7243SL Datasheet, PDF (25/28 Pages) Infineon Technologies AG – 8 Channel Protected Low-Side Relay Switch

SPI Driver for Enhanced Relay Control
SPIDER - TLE7243SL
Application Information
9
Application Information
Note: The following information is given as a hint for the implementation of the device only and shall not be
regarded as a description or warranty of a certain functionality, condition or quality of the device.
Figure 13 shows a simplified application circuit. VDD and VDDA need to be externally reverse polarity protected.
+5V
100nF
Limp Home Circuit
Possibility to control OUT 1-
4 via Inputs IN1-4 during
malfunction of µC
VCC
GPIO
µC
XC2000
SPI
GND
Vbat
VDD
VDDA
IN1
IN2
IN3
IN4
RST
OUT1
OUT2
OUT3
OUT4
OUT5
KL15 Relay
KL50 Relay
Wiper Relay
Horn Relay
OUT6
OUT7
OUT8
low-side
gate control
VDD
CS
SPI
SCLK
SO
SI
GND
GND
LHI
Limp Home Signal
(eg WD out of SBC TLE 8264 G Hermes)
TLE7243SL.emf
Figure 13 Application Diagram
Note: This is a very simplified example of an application circuit. The function must be verified in the real application.
For further information you may contact http://www.infineon.com/spider
Datasheet
25
Rev. 1.0, 2009-09-30