LED lighting with hot LED drive power development

LED relying on high luminous efficiency, low power consumption, long service life, high safety and reliability, is conducive to environmental protection and other characteristics of the LED application in 2008 to obtain the development of blowout. In LED shine at the same time, the LED driver is the development of LED industrial chain security, LED power quality directly restricts the reliability of LED products, therefore, the gradual improvement in the Chinese LED industry chain today, LED drive power maturity is also crucial.

Because LED is a sensitive semiconductor device, it has negative temperature characteristic. Therefore, in the application process, it needs to work stably and protect. LED devices on the power supply requirements are almost harsh, LED is not like ordinary incandescent bulbs, can be directly connected to the 220V AC power. LED is a 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. LED power supply voltage matching requirements are very high. The quality of driving power supply is the key guarantee of LED long life and high efficiency.

The author investigated the Shenzhen ledfriend optoelectronics, Shenzhen Shenju source electronic technology and a number of specialized LED driving power supply manufacturers that the international market of foreign customers of LED drive power conversion efficiency, effective power, constant current accuracy, power life and electromagnetic compatibility requirements are very high, a good design the power supply must be integrated into these factors. Because the power in the whole lamp acts as a man's heart is as important as!

In 2009, aside from 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 China's LED application products output has more than 45 billion yuan, LED demonstration and application of lights, full-color LED display, solar LED, landscape lighting, consumer electronics, signal indication, backlight application is still the main field of application, but in the domestic market is booming in the background, the quality of LED products to drive power demand uneven in quality. Chaos, which is also a major factor in recent months LED enterprise reshuffle.

In the domestic market, the development trend of LED products in full swing, the LED driver of the current output of the technical requirements of the challenge. In order to prolong the service life of the LED lamp, the commonly used integrated circuit power supply, so to design a constant current power source circuit, high current drive, with high power tube or SCR, plus protection circuit, so that the power supply circuit of LED is very complex, the failure rate is increased. Component costs, production costs, service costs will rise. At present, the cost of LED is high, the cost of power plus, which greatly limits the LED market competitiveness of products and purchase groups, the superiority of LED products greatly reduced, which is restricting the development and popularization of the key problem.

On the LED power companies, Li Xu, general manager of Shenzhen deep poly source Electronics Technology Co., Ltd. believes that around 2009 100W power supply market will be greatly improved. LED light source from around 100W compared with the traditional lighting source has a more prominent price, and soon formed an industrial scale LED street lighting and landscape lighting market.