Automotive 144-Zone Local Dimming Backlight Reference Design
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 solutionsHigh-voltage transient and reverse battery protectionAmbient light sensing with excellent human eye spectral response matching with strong IR rejection (Dynamically adjusts backlight brightness on logarithmic scale based on human eye and perception of brightnessDirect-lit backlight configurationSingle-chip sensing solutions without thermistors or photo-diodes
Applications
- Automotive head unit
- Hybrid instrument cluster
- Locator/tracker
- Aircraft cockpit display
- Interconnect/distribution box
- Reconfigurable instrument cluster
- Head-up display
- Automotive auxiliary display
- Aftermarket head unit
- Marine equipment
- Automotive display module
- Automotive cluster display
- Commercial vehicle instrument cluster
- 2-wheeler & 3-wheeler HMI & display
- Automotive center information display
- Circuit breaker (ACB
- MCCB
- VCB)
Product Categories
- Power management