Macroblock Announces LED Driver with Uniformity Performance

Macroblock has announced the LED driver, MBI5025. With the ultra-concentrative distributions by the advanced PrecisionDrive technology, the maximum output current variations between channels (also called “channel skew”) and between drivers (also called “chip skew”) are suppressed to 2% and 3% respectively. The precise output current control of an LED driver delivers more uniform color or brightness of LEDs, improving the image quality and color performance of LED display panels. The MBI5025 has achieved incredible uniformity performance for LED display panels. Realizing that minimizing the output current variation is the base when it comes to display quality and manufacturing improvements of LED display panels, Macroblock has been dedicated to upgrade the uniformity of LED drivers in every possible way. In terms of IC design, the channel skew and chip skew are caused by the mismatch of devices inside the IC and inconsistency of the different batches of IC.



The LED display panel manufacturers used drivers with constant voltage output to drive LEDs, e.g. 74HC595. As a result, it is difficult to control the image quality of LED display panels due to the inconsistent color and brightness of LEDs. To further improve the image quality of LED display panels, the constant current LED driver is applied to achieve better LED uniformity, but the skew of output current is still very large until Macroblock unveiled the famous PrecisionDrive LED driver, the MBI5026, to lower the channel skew and chip skew to ±3% and ±6% respectively. The MBI5025 has achieved incredible uniformity performance for LED display panels. LED display manufacturers may improve the image quality with better brightness and color consistency and reduce the manufacturing costs caused by the variations from LED driver batches and from LEDs. MBI5025 samples are now available.