TIDA-020001
Automotive 144-Zone Local Dimming Backlight Reference Design
TIDA-020001
Overview
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
Automotive
- Aftermarket head unit
- Automotive auxiliary display
- Automotive center information display
- Automotive cluster display
- Automotive display module
- Commercial vehicle instrument cluster
- Display, HMI, media interface, tuner, wireless
- Display, HMI, media interface, wireless
- Display, HMI, tuner, wireless
- Display, wireless
- Locator/tracker
- MCU based hybrid cluster
- Motorcycle instrument cluster
- Reconfigurable instrument cluster with HUD interface
- Reconfigurable instrument cluster with HUD/camera interface
- Reconfigurable instrument cluster with camera interface
- Reconfigurable instrument cluster without HUD or camera interface
- TFT-based HUD with local graphics processing
- TFT-based HUD with remote graphics processing
Design files & products
Design files
Download ready-to-use system files to speed your design process.
Reference design overview and verified performance test data
Detailed schematic diagram for design layout and components
Complete listing of design components, reference designators, and manufacturers/part numbers
Detailed overview of design layout for component placement
Files used for 3D models or 2D drawings of IC components
Design file that contains information on physical board layer of design PCB
PCB layer plot file used for generating PCB design layout
Products
Includes TI products in the design and potential alternatives.
OPT3001-Q1 — Automotive digital ambient light sensor (ALS) with high-precision human-eye response
Data sheetLMT87-Q1 — Automotive ±2.7°C 2.7V to 5.5V analog output temperature sensor with -13.6 mV/°C gain
Data sheetTLC6C5716-Q1 — Automotive 16 channel Full diagnostics constant current RGB LED driver
Data sheetTLC6C5724-Q1 — Automotive 24 channel Full diagnostics constant current RGB LED driver
Data sheetLMR14030-Q1 — SIMPLE SWITCHER® Automotive 40-V, 3.5-A, 2.2-MHz step-down converter with 40-uA IQ
Data sheetLM74700-Q1 — 3.2-V to 65-V, 80-uA IQ automotive ideal diode controller
Data sheetTPS7A52-Q1 — Automotive 2-A, low-VIN (1.1-V), low-noise, high-accuracy, ultra-low-dropout (LDO) voltage regulator
Data sheetTPS22918-Q1 — 1-ch, 5.5-V, 2-A, 52-mΩ automotive load switch with adj. rise time and adj. output discharg
Data sheetStart development
Technical documentation
Type | Title | Date | |
---|---|---|---|
* | Design guide | Automotive 144-Zone Local Dimming Backlight Reference Design | Oct. 04, 2018 |
Related design resources
Hardware development
DEVELOPMENT KIT
Support & training
TI E2E™ forums with technical support from TI engineers
Content is provided "as is" by TI and community contributors and does not constitute TI specifications. See terms of use.
If you have questions about quality, packaging or ordering TI products, see TI support.