Automotive 144-zone local dimming backlight enhances display
This local dimming backlight reference design from Texas Instruments, conserves power, extends the life of liquid-crystal displays (LCDs), and enhances automotive display quality through high dynamic range (HDR) or localised dimming technology. Seven multi-channel constant-current LED drivers allow for 144-zone localised 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.
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