Development of LED and LED Driver

The main electronic components of LED lights are white LED and supporting LED drivers. Here is a brief overview of development of LED and LED driver.

White LED is the most common in LED lighting and illumination. It has been over 12 years from the use of white LED to 2014. There are many improvements and changes of white LED on materials, structure, and processes. The performance enjoys a significant progress. The types increases while the price is declining. 4 years ago, white LED luminous efficiency is about 40 ~ 601m / W; 2 years ago, it increased to 80 ~ 100lm / W, while this year it reaches 1201m / W; some also over 1201m / W. At the very beginning, a Φ5, 0.06W white LED is about 2 to 3 yuan per each; and today, you can buy one 1 ~ 3W high-power white LED with the same money before. 3 years ago, a 3W white LED of the top foreign brand sells 30 yuan; but this year, it's down to 10 yuan only.

The increase of LED lights production capacity promotes the development of LED driver IC. Many LED lighting manufacturers develop and manufacture various LED driver IC to meet the needs of the market. The LED driver IC for AC-powered is also designed with power factor correction circuit (PFC), thus the power factor is >0.95, and the efficiency is > 85%. Many companies produce different output power of the finished LED driver module whose output current accuracy is better than ±5%. Therefore the production of LED lights become much easier.

The development of LED and LED driver enables a good design and production of LED lights, and reduce the production cost of LED.

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