With the LED lighting needs heavy volume and LED application of the diversified development of LED driver IC new round of competitive situation is also more intense. How to provide users with the best control program, providing innovative design and added value, LED driver IC has become the most pressing issue. The current LED driver is divided into two main types: switching power supply and AC direct drive program. What are the advantages and disadvantages of these two programs? What is the new AC direct drive solution market?
1, Reliability
With the development of wafer and packaging technology, LED light source itself can reach the basic life of 5-10 million hours, but the switch drive power supply reliability, lower the reliability of the whole lamp, life of less than 20,000 hours. (Such as electrolytic capacitors, transformers, etc.) and high-voltage high-current power devices (such as power transistors, MOS tube, etc.), so that the energy consumption of energy-saving components (such as electrolytic capacitors, transformers, etc.) and high-voltage high-current power devices (such as power transistors, Drive loss is reduced, the drive efficiency is improved, and the life of the drive can really match the LED life. In a good thermal management system, LED lamp life can guarantee more than 50,000 hours.
2, Cost
Switching power supply in the design of more complex, the total cost of the solution is higher, LED lighting technology and the market matures, LED driver as a core component into a new round of product innovation cycle, "simple, efficient, highly reliable, low cost" The future direction of development, communication direct drive method is relatively simple in design, the cost of the solution is low.
3, Strobe
According to the spruce photoelectric introduction, the company developed 220Vac and 380Vac to DC high voltage segmented LED circuit technology, in the harmonic distortion, conducted harassment and radiation harassment and other indicators are in line with CCC, CE, UL certification requirements, while the technology used Quasi-DC high-voltage drive LED, high luminous efficiency, to overcome the optical strobe, to solve the AC direct drive (linear constant current drive) LED technology in the AC drive caused by low luminous efficiency and optical strobe.
