Analysis of LED display special power supply related technologies

72 views admin 2023-12-22

As one of the main equipment of LED display, LED power supply is playing an important role for led display. Research data shows that more than 80% of failure displays are caused by the power supply. LED display is divided into indoor and outdoor use of two kinds of environment, today we take a look at the LED display dedicated power supply of those related technical parameters!

In general, when selecting a dedicated LED display power supply, products with low output voltage and high current should be selected (such as 5V/60A applications). So why do you choose this? This is because the LED lamp bead working voltage is low, the general LED lamp bead working voltage, white is 2.8~3.3V; Red is 1.8~2.2V; Blue is 3.0~3.2V; Green is 2.9~3.1V; Yellow is 1.8~2.0V, so the display manufacturers will choose 5V as the main power supply when they choose the standard power supply.

With the continuous development and innovation of LED component technology, the efficiency of driver IC is also continuously improved, the power supply of LED display in the future will be converted to 4.5V/4.2V for the bulk, so we will use a new generation of commonly used voltage such as: 2.5V/3.3V/4V planning for the standard series, and the establishment of standard inventory, greatly reduce the LED display customer selection and modification of the trouble.

With the rise of the rental LED display market, rental display with its small pitch, light weight, thin structure, with the advantages of lifting and quick disassembly/handling/installation, has been widely used in hotels, booths, KTV\ video conference and other fields, small-pitch LED display P1.9 and P1.6 specifications have officially become the mainstream of the market, P2.5 is gradually regularized, and as the technology of small-pitch display matures, its application will be more extensive.

For small pitch and rental display customers for small power installation space and volume requirements, such as the newly developed HSP/HSN-200/300 series, fully meet customer size and height design needs, but also quickly become LED display customers in the high-quality standard power supply on another choice.

First of all, we only select good looking power supplies, which means that the array uniformity of the components is excellent. Second, check the efficiency of the power supply. Judging the energy saving level of the power supply is based on efficiency. When full load is used as a good power source, it must be higher than 80%. The higher the efficiency, the less active power input. Third, the PFC value is also important as an efficiency. A power supply without PFC may have a PF value lower than 0.6. Low PF values can increase reactive power and cause large power losses. Fourth, we need to ensure that the power supply has excellent stability, which will affect the stability and working life of the LED display. It can be expressed by ripple and temperature rise, while a power supply with good stability must have low ripple and low temperature rise.