TIDA-00169

Automotive TFT LCD Display Solution

TIDA-00169

Design files

Overview

This reference design implements a video over LVDS solution for automotive infotainment applications.It highlights the support of multi-touch with haptic feedback, LCD backlight control, and ambient light sensing, without the introduction of dedicated support lines back to the host processor. This design is implemented using two boards. The main electronics board, SAT0059 is where the deserializer, microProcessor, backlight controller, haptics drivers and power supply are located. The LCD interface board, SAT0096, is a physical and electrical interface to a specific LCD panel. It connects to the SAT0059 through a Samtec board to board connector and provides connection points for the LCD panel, touchscreen, backlight connections and haptic drivers. The SAT0096 is designed for a Microtips UMSH-8596MD-20T display. If a different display is to be used, a new LCD Interface board would likely need to be designed.

Features
  • Wide input voltage range: off battery 4.5V to 40V power supply
  • All video and support communications through LVDS
    o Supporting 24 bit RGB Video
    o 400Kbps back channel I2C connection for multi-touch input
  • Haptic feedback
  • State of art I2C/SPI interface LED backlighting controller with dimming ratio of >10,000:1, switching frequency ~2.2MHz, hybrid dimming and saftey and fault tolerances/functions
  • Backlight adjustable to inputs
    o Ambient light sensor
    o Thermistor inputs on the LCD and the back light to enable thermal protection

A fully assembled board has been developed for testing and performance validation only, and is not available for sale.

Design files & products

Design files

Download ready-to-use system files to speed your design process.

TIDU440.PDF (258 K)

Reference design overview and verified performance test data

TIDU441.PDF (245 K)

Test results for the reference design, including efficiency graphs, test prerequisites and more

TIDR896.PDF (397 K)

Detailed schematic diagram for design layout and components

TIDR897.PDF (167 K)

Detailed schematic diagram for design layout and components

TIDR898.PDF (128 K)

Complete listing of design components, reference designators, and manufacturers/part numbers

TIDR899.PDF (96 K)

Complete listing of design components, reference designators, and manufacturers/part numbers

TIDR900.ZIP (2011 K)

Files used for 3D models or 2D drawings of IC components

TIDR901.ZIP (1308 K)

Files used for 3D models or 2D drawings of IC components

Products

Includes TI products in the design and potential alternatives.

Automotive LED drivers

LP8860-Q1Automotive low-EMI high-performance 4-channel LED driver

Data sheet document-pdfAcrobat PDF open-in-new HTML
Buck converters (integrated switch)

LM25011-Q1Automotive 6-42V Wide Vin, 2A Constant-On Time Non-Synchronous Buck Regulator w/ Adj Current Limit

Data sheet document-pdfAcrobat PDF open-in-new HTML
FPD-Link SerDes

DS90UH925Q-Q15 - 85 MHz 24-bit Color FPD-Link III Serializer with HDCP

Data sheet document-pdfAcrobat PDF open-in-new HTML
FPD-Link SerDes

DS90UH926Q-Q15 - 85 MHz 24-bit Color FPD-Link III Deserializer with HDCP

Data sheet document-pdfAcrobat PDF open-in-new HTML
Load switches

TPS22965-Q11-ch, 5.7-V, 4-A, 16-mΩ automotive load switch with adj. rise time and output discharge

Data sheet document-pdfAcrobat PDF open-in-new HTML
Piezo drivers

DRV2667Haptic driver for piezo with integrated 105-V boost converter, waveform memory & DAC

Data sheet document-pdfAcrobat PDF open-in-new HTML

Technical documentation

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Type Title Date
Test report TIDA-00169 Test Results Jul. 17, 2014
Design guide TIDA-00169 Overview Jul. 17, 2014

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