We use a small led module to analyze its power consumption! It is a small led module that drives the chip. Its power supply voltage is 5V. The power consumption of peripheral devices is not calculated first, because they occupy a very small proportion in the entire screen. , The power consumed by the entire screen is on the lamp, first calculate the lamp point power as Pled=n*Uvf*Iled (n is the number of channels, Uvf is the voltage drop of the LED lamp point, and Iled is the set current value) CYT62726 The pin voltage drop of the driver IC is generally about 0.6V, and the voltage drop of the red, green and blue light points are 1.8V, 3.0V, 3.0V, so that each channel only needs 4V (3.0+0.6V) to work normally. To be conservative, it can be set to 2.8V for the red light channel and 3.8V for the blue and green channels. In fact, our power supply voltage is 5V, which is equivalent to increasing the power consumption of 1V*Iled inside the IC, so it can be imagined as long as the power supply Reducing to 2.8V for red, 3.8V for green, and 3.8V for blue, we can save the 1V*Iled power consumption added to the IC channel, and the LED display can save energy by at least 15% while other devices remain unchanged. , Coupled with the reduction of the heat dissipation requirements of the LED screen itself can also achieve a certain degree of energy saving, which is already a considerable number for a large screen, and I believe customers will be happy to accept it.

In summary, the realization of energy-saving LED electronic screens mainly starts from the power supply. The existing LED electronic screens directly use half-bridge or full-bridge high-efficiency switching power supplies, plus synchronous rectification has significant energy-saving effects. Reduce the power supply voltage as much as possible under the constant current state of the driver IC, and achieve better energy-saving effects by separately supplying power to the red, green and blue dies. Of course, the application cost of this non-standard voltage power supply and new technology will inevitably rise. From the point of view of the screen driver IC, energy saving is not obvious, and reducing the constant current pressure difference of the drive will also bring new problems including cost.