Language
LED lighting has a huge energy-saving effect and will replace traditional light sources, thus triggering the fourth revolution in the history of human lighting, greatly improving the living environment of human beings, and alleviating the increasingly severe global energy crisis. The driving power supply is the guarantee for the development of the LED industry chain. The quality of the LED power supply directly restricts the reliability of the application of LED products. Therefore, in the gradual improvement of the LED industry chain, the development and maturity of the LED driving power supply is also crucial.
Since LEDs are characteristic-sensitive semiconductor devices and have negative temperature characteristics, they need to be stabilized and protected during application, resulting in the concept of driving. LED devices have very strict requirements on driving power. Unlike ordinary incandescent bulbs, LEDs can be directly connected to 220V AC mains. LEDs are driven by a low voltage of 2 to 3 volts, and complex conversion circuits must be designed. LED lights for different purposes should be equipped with different power adapters. In the international market, foreign customers have very high requirements on the efficiency conversion, effective power, constant current accuracy, power supply life, and electromagnetic compatibility of LED drive power supply. To design a good power supply, these factors must be comprehensively considered, because the power supply is in the whole lamp. It is as important as the human heart. In 2009, although the financial crisis had a great impact on the world economy, international markets such as Europe and the United States still had a large demand for high-power LED power supplies, and the corresponding export volume of high-end LED products was less affected by the financial crisis. In 2008, the output value of China's LED application products has exceeded 45 billion RMB. LED demonstration application street lamps, LED full-color display devices, solar LEDs, landscape lighting, consumer electronics backlights, signals, indications and other applications are still the main application areas. However, in the context of a prosperous market, the quality of LED products is mixed, the requirements for driving power are chaotic, and LED products in the market are in full swing. As far as LED driving power companies are concerned, there are several challenges. The first is the overall life of the drive circuit, especially the life of key components such as capacitors under high temperature, which directly affects the life of the power supply. Secondly, LED drivers should challenge higher conversion efficiency, especially when driving high-power LEDs, because all the power that is not used as light output is dissipated as heat, and the power conversion efficiency is too low, which affects the LED energy-saving effect. play. Third, the LED can be dimmed efficiently with a large dimming ratio, while maintaining constant color characteristics at high and low brightness. At the same time, it is necessary to reduce costs. In applications with low power (1-5W), the proportion of the cost of constant current drive power is close to 1/3, which is close to the cost of light sources, which affects market promotion to a certain extent.
We have always followed the standardization rules for a rigorous production process, saving time and cost for both parties and bringing maximum benefits to you. Our products and services are committed to providing quality and advanced technology to meet all customers' various requirements.
???????
Zhuhai PT Power Technology Co., Ltd. is a high-tech company focusing on LED Power Supply.