In the LED shine at the same time, LED drive power | regulator is the development of LED industry chain protection, LED power supply has led directly restricts the quality of product reliability, therefore, in the LED industry chain gradually improving today, LED mature drive power is also crucial. On the LED power supply enterprises, in 2009 around 100W power supply market, the increase will be greatly improved. 100W or so from the traditional lighting LED light source has a more prominent compared to cost-effective, and soon the formation of industrial-scale LED street lamps and landscape lighting markets.
As the LED is a feature-sensitive semiconductor devices, but also has a negative temperature characteristics, so in the application process need to be a stable working conditions and protection, resulting in the drive concept. LED device of the drive power requirements of almost oppressive, LED unlike ordinary incandescent bulbs, can be directly connected to the exchange of 220V electricity. LED is 2 ~ 3 V low-voltage drive, we must change the design of complex circuits, different uses LED lights, to be equipped with a different power adapter. The international market, foreign customers, the efficiency of the LED drive power conversion, active power, constant current accuracy, battery life and electromagnetic compatibility requirements are very high, to design a good power supply must be comprehensive consideration of these factors, because the power of the entire light The role of the like is as important as the human heart.
2009, set aside the financial crisis on the world economy, Europe and the international market for high-power LED power supply is still a great demand for, and the corresponding high-end LED products, exports less affected by the financial crisis. In 2008 in mainland China LED application products output value has more than 45 billion yuan RMB, LED street lamp demonstration and application, LED full color display | display devices, solar LED, landscape lighting, consumer electronics, backlighting, signals, instructions and other applications is still the main application areas However, a boom in the mainland market in the context, LED product quality, both good and bad, to drive the power requirements of confusion, but also in recent months, a major factor in shuffle LED business. LED products in the mainland market developing trend in full swing, under the LED drive power enterprises, are facing several challenges. The first is the overall life of driver circuit, especially the key components such as capacitors at high temperature directly affects the life of the life of the power. Followed by the LED drive higher conversion efficiency should be challenging, especially when driving high-power LED is especially true, because all is not as light output power is dissipated as heat, power conversion efficiency is too low, affecting the LED energy saving effect of play. Third, the big right dimmer than high efficient LED dimming at the same time be able to guarantee high and low brightness of the color characteristics of a constant. At the same time to reduce costs, currently in power small (1-5W) applications, the constant-current drive power cost share is close to 1 / 3 the cost is close to a light source, to a certain extent affected the marketing.
