Automotive 144-Zone Local Dimming Backlight Reference Design TIDA-020001 (ACTIVE)

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Key Document

Description

This local dimming backlight reference design conserves power, extends the life of liquid-crystal displays (LCDs), and enhances automotive display quality through high dynamic range (HDR) or localized dimming technology. Seven multi-channel constant-current LED drivers allow for 144-zone localized dimming via pulsewidth modulation (PWM) on-time and current-level brightness configuration. A single serial interface allows daisy-chaining of the LED drivers for brightness and configuration programming. Temperature and ambient light sensors enable sensing of the surrounding conditions to protect from overtemperature scenarios and adjust the global brightness based on ambient brightness.

Features
  • Individually dim backlight zones saves power, prevents backlight bleed, and realizes HDR and local dimming solutions
  • High-voltage transient and reverse battery protection
  • Ambient light sensing with excellent human eye spectral response matching with strong IR rejection (<1%)
  • Dynamically adjusts backlight brightness on logarithmic scale based on human eye and perception of brightness
  • Direct-lit backlight configuration
  • Single-chip sensing solutions without thermistors or photo-diodes

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Design Files

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TI Devices (8)

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Part Number Name Product Family Sample & Buy Design Kits & Evaluation Modules
LM74700-Q1  Low Iq, ideal diode controller  Power switches  Sample & Buy View Design Kits & Evaluation Modules
LMR14030-Q1  Automotive 40V, 3.5A SIMPLE SWITCHER®, 2.2MHz Step-Down Regulator with 40uA IQ  Step-down (buck)  Sample & Buy View Design Kits & Evaluation Modules
LMT87-Q1  Automotive Grade, 2.7V-Capable, 10 uA Analog Output Temperature Sensor  Temperature sensors  Sample & Buy View Design Kits & Evaluation Modules
OPT3001-Q1  Automotive digital ambient light sensor (ALS) with high-precision human-eye response  Specialty sensors  Sample & Buy View Design Kits & Evaluation Modules
TLC6C5716-Q1  Automotive 16 Channel Full Diagnostics Constant Current RGB LED Driver  LED drivers  Sample & Buy View Design Kits & Evaluation Modules
TLC6C5724-Q1  Automotive 24 Channel Full Diagnostics Constant Current RGB LED Driver  LED drivers  Sample & Buy View Design Kits & Evaluation Modules
TPS22918-Q1  5.5V, 2A, 52mΩ Automotive High-Side Load Switch with Adjustable Rise Time & Quick Output Discharge  Power switches  Sample & Buy View Design Kits & Evaluation Modules
TPS7A52-Q1  Automotive 2A High-Accuracy Low-Noise Low-Dropout (LDO) Voltage Regulator  Power management  Sample & Buy View Design Kits & Evaluation Modules

CAD/CAE symbols

Part # Package | Pins CAD File (.bxl) STEP Model (.stp)
LM74700-Q1 Download -
LMR14030-Q1 Download Download
Download Download
LMT87-Q1 Download
OPT3001-Q1 Download Download
TLC6C5716-Q1 Download -
TLC6C5724-Q1 Download -
TPS22918-Q1 Download Download
TPS7A52-Q1 Download

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Technical Documents

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User guides (1)
Title Type Size (KB) Date
PDF 5914 04 Oct 2018
Design files (6)
Title Type Size (KB) Date
ZIP 1775 04 Oct 2018
ZIP 2154 04 Oct 2018
PDF 3079 04 Oct 2018
PDF 435 04 Oct 2018
PDF 37 04 Oct 2018
PDF 497 04 Oct 2018
Related Tools & Software

Design Kits & Evaluation Modules  ( 1 )

Name Part Number Tool Type
C2000 Delfino MCU F28379D LaunchPad™ development kit  LAUNCHXL-F28379D  Development Kits 

Software (1)



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