Accumulating the LED driver chip MBI5037 with intelligent power-saving mode, and LED billboard for target traffic display

October 26, 2022

Theme: Industrial Technology
LED driver chip manufacturer, Microblock, recently released a 16-channel LED driver chip with intelligent power-saving, full-screen silent error detection function - MBI5037
. This chip is specially designed for long-term opening 5. Milk ED traffic display kanban, such as LED speed limit map, LED speed board, LED information screen of highway. Since the traffic screen is still in use, the display area will remain unlit for most of the time (as shown in the figure to the right), but the driver chip still has to operate at the unlit place, thus wasting a lot of power.

The intelligent energy-saving mode of MBI5037 allows the driver chip to be in the unlit position, with power consumption below 100uA, and the power saving efficiency is 99%, which not only effectively extends the life of the chip, but also makes the LED reach the realm of energy saving.

The MBI5037 offers both mandatory sleep and 0–Power power save modes. In the application of LED traffic display kanban, the mandatory sleep mode is used to command the LED to perform forced sleep when no car passes. When a car passes, it is forced to wake up. The wake-up time only needs 100us. Compared with the command mode of forced sleep, as long as the output data is set to 0, the driver chip will automatically enter the 0-Power power-saving mode. This part of the display area that can be applied to the LED display kanban always needs to be closed. Lights up. These two power-saving modes have the same power-saving efficiency of 99%, which not only has high efficiency, stable system, greatly reduced cost and easy design, and can help customers quickly import into traffic display kanban applications.

Automatic error detection is a necessary function in traffic display kanban applications, so the MBI5037 is designed with mandatory silent open/short error detection, allowing the LED to highlight the LED with a very low current of 0.1 mA in a very short time of 700 ns. The lighting point is used for full-screen error detection, and the screen flickers when detecting, maintaining the normal operation of the LED display kanban, and the threshold voltage of the short-circuit detection and output leakage current detection of the MBI5037 can be adjusted to respond Different LED forward voltage changes.

The MBI5037 supports a 3 to 80 mA?a stream output range with a withstand voltage of up to 17V. With the accumulated Share-IO patent technology, the MBI5037 pin is fully compatible with MBI5025/MBI5026/MBI5027/MBI 5028/ MBI5029.

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Mr. Wayne Tang

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