The Design Of Drive Circuit For White Light High Power LED

In view of the traditional incandescent and fluorescent lamp have thedisadvantage of large energy cosumption, low luminous efficiency, short-lived andbrittle. This paper which taking the most widely used of fluorescent lamp, readinglamp and street lamp boost circuit as the design goal designes the efficient andenergy-saving the white light of high-power LED fluorescent lamp, LED readinglamp and LED street lamp boost circuit. Compared with the traditional lamp, thelamp has the advantages of long-lived, pollution-free, shock resistant and impactresistance. Because of the use of the mached and most efficient LED dirve circuit, ithas lower energy consumption and better lighting effect.To show the features of efficency and energy-conserving about LED lighting, theefficient LED driver circuit must be designed to matching. Facing a lot of driver chipand various driver circuit, which chip and circuit is used can obtain the mostefficency? To solve the above problem, this paper firstly study the hight-powerLED die luminescent mechanism. Only luminescent mechanism has been clearknown, we could find the optimized driver way to the LED die. Secondely, this paperstudy and compare the most widely application circuit in a variety of whitehight-power driver approach, clearly know the working principle, applications,advantages and disadvantages, which select the most matching driver modern of themost widely used of LED fluorescent lamp, LED reading lamp and LED street lampboost circuit. Thirdely, the various specific modules in the circuit has been designed.To further enhance efficency, A power factor correction circuit is added to the LEDreading lamp and LED street lamp. Finally, the actual circuit is debugged and tested,which met the perfomance indicators by designed.