LED chip technology the key to development lies in the base material and epitaxial growth techniques. Base material by the traditional materials of sapphire, silicon and silicon carbide, the development of zinc oxide, gallium nitride and other materials. In a few short years, by means of a series of technical improvements, including chip architecture, surface roughening treatment and multiple quantum well structure design, including LED light effects achieved a great breakthrough.
Reduce the cost of LED lights
LED 400W occupies the main part of the cost of LED lights, thereby reducing the cost of the LED is to reduce the cost of the LED chip.
LED chip technology the key to development lies in the base material and epitaxial growth techniques. Base material by the traditional materials of sapphire, silicon and silicon carbide, the development of zinc oxide, gallium nitride and other materials. In a few short years, by means of a series of technical improvements, including chip architecture, surface roughening treatment and multiple quantum well structure design, including LED light effects achieved a great breakthrough.
Low cost silicon substrate technology continue to progress, but the luminous efficiency are still not satisfied, to maintain this pace of development, once they reach a higher level, the silicon substrate as the main technical program has become an inevitable choice, businesses will also be huge economic returns.
Improve the color of the LED lights
In the high power led , a small portion of blue Stokes shift of the longer wavelengths. This is a good thing, because it makes the LED light manufacturers can use many different colors of the phosphor layer to extend the emission spectrum, effectively improve the LED color rendering index (CRI). Using phosphor white LED high CRI has a cost, because the Stokes shift will cause the white LED efficiency is lower than the efficiency of monochromatic LED. But for most lighting applications, preferring to use high CRI LED light efficiency is slightly lower.
Improve the system reliability of LED lights
The overall efficiency of the LED life and reliability through system optimization can be improved.
Light source: compact, efficient, and to choose the right color and output power.
Control and drive: the use of electronic circuits to achieve constant current LED driver and control.
Thermal Management: To achieve a longer life must control the use of LED junction temperature, thermal model calculations with the new materials, new technology is the hot spot of LED lamp technology.
Optical components: lenses, reflectors or light-material light rays are focused in the target area or dispersed in four weeks, according to design requirements.
Improve the efficiency of the LED 200W power
Whether the power of the current-limited constant current control, or op amp to control the constant current power supply, we must solve the supply problem. Switching power supply chip work is a relatively stable DC voltage for the chip-powered, the chip's operating current of several MA ranging from an MA. Like FSD200, NCP1012, and HV9910, such a chip is a high-pressure self-feed, to use is convenient, but high-pressure feed, resulting in the rise of the IC heat, because the IC to withstand about 300V DC, a little current, even if MA, the damage of 0.3 watts consumption. General LED power about 10 watts, the loss of a few tenths of watts can click on the efficiency of the power to pull down a few points. Typical elephant QX9910. Resistor pull-down to take power, so, the loss on the resistor, about have to loss it a few tenths of watts. There is a magnetic coupling transformer, plus a winding on the main power coil, as flyback secondary winding of the power, so to avoid loss out of a few tenths of watts of power. This is why one of the isolated power supply is also used transformer, in order to avoid the loss of a few tenths of watts of power and efficiency to mention a few points.
With the increasingly serious problem of Earth's greenhouse gas emissions, approaching the critical point of the Earth self-regulation, countries have introduced policies to governments around the world, including China, is necessary for the urgent implementation of energy saving and emission reduction (carbon dioxide), led light is the most energy-efficient electric light green, natural lighting energy saving options, its popularity is also accelerating with the gradual reduction of costs and prices of LED lights, LED Blue 150W market share of over 50% in 2020 .