As digital signage and media façades are installed outdoors, the display size can range up to several hundred inches, which requires a much higher level of technology and reliability than found in television sets. For LED panels used in digital signage, about 1,000 LEDs per square metre are used. Therefore, capability of the LED driver must be doubled or even tripled for the most cost-effective scenario, says MagnaChip.
Compared with existing LED drivers in the market capable of controlling 12-channel or 16-channel LEDs, MagnaChip’s claims its Mini LED Driver for digital signage can drive 36-channel LEDs concurrently, featuring high density, reduced energy consumption and more efficient product designs.
The Mini LED Driver uses 12 Bit Grayscale PWM (Pulse Width Modulation) to enable the 4,000-step PWM control and a “sophisticated” LED current control. It also provides 64-step output current control, which MagnaChip says, enables not only detailed graphic representation, but also accurate depictions of a variety of pictures and images according to the brightness of the contents.
The mini LED driver also features a high withstanding voltage of 65Venables surge protection for a high level of security and uses a 64 Pin QFN Package (8X8mm^2) to deliver “excellent” thermal performance.
