Development of LED driver power supply chain

In LED shine at the same time, the LED driver | regulator is the guarantee of the development of LED industry chain, LED power supply quality directly restricts the reliability of LED products, therefore, the gradual improvement in the industrial chain of LED today, LED drive power maturity is also crucial. On the LED power supply companies, in 2009 around 100W power supply market will be greatly improved. The LED light source of 100W is more prominent than the traditional lighting source, and the LED street lamp and landscape lighting market will soon be formed.

Because LED is a sensitive semiconductor device, and has a negative temperature characteristic, it needs to work stably and protect in the application process. LED devices on the power supply requirements are almost harsh, LED unlike ordinary incandescent bulbs, can be directly connected to the 220V AC power. LED is 2 to 3 volt low voltage drive, we must design a complex transformation circuit, LED lamps for different purposes, to be equipped with different power adapter. The international market of foreign customers of LED drive power conversion efficiency, effective power, constant current power supply, precision and life of electromagnetic compatibility requirements are very high, the design of a good power supply must be integrated into the power factor, because in the role of the whole lamp is like a person's heart is as important as.

2009, put aside the impact of the financial crisis on the world economy, Europe and the United States and other international markets for high power LED power demand is still large, the corresponding high-end LED products exports affected by the financial crisis. In 2008, Chinese LED application products output has more than 45 billion yuan RMB, LED demonstration and application of lights, full-color LED display | display device, solar LED, landscape lighting, consumer electronics, signal indication, backlight application is still the main field of application, but in the mainland market is booming in the background, LED product quality of uneven in quality. The driving requirement of chaos, and it is also a major factor in recent months LED enterprise reshuffle. In the face of the development trend of LED products in the mainland market, on the LED power supply enterprises, is currently facing several challenges. First, the overall life of the drive circuit, especially the key components such as the life of the capacitor directly affects the life of the power supply. The second is LED drive should be converted to challenge higher efficiency, especially in the high-power LED drive, because all is not as light output power is dissipated as heat, power conversion efficiency is too low, the effect of energy saving play LED. Third, in the light of the main light than the high efficiency of LED dimming, while ensuring high and low brightness color constant. At the same time to reduce costs, in the current power (1-5W) applications, the proportion of constant current drive power costs have been close to 1/3, has been close to the cost of light source, to a certain extent, affected the market.