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The Design of High Power LED Lighting and Driver

Author: LiangJianFeng
Tutor: WangHong
School: South China University of Technology
Course: Optics
Keywords: Power LED Drive power Power factor correction Quasi-resonant mode
CLC: TN86
Type: Master's thesis
Year: 2011
Downloads: 478
Quote: 3
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Abstract


Power lighting LED (Light Emitting Diode) is a new generation of light , its light conversion efficiency, also known as green light. If LED lighting to replace the current low efficiency, high energy consumption of traditional lighting , no doubt more and more urgent to alleviate the current energy shortage and environmental degradation issues play a decisive role . In this paper, the characteristics of LED indoor lighting requirements and to study the design of a high-power LED panel light and constant current drive power. In this paper, indoor lighting requirements , describes the design of high-power LED lighting systems and lighting structures . In lighting design, aluminum plate, LED lamps floor full account of the heat problem , in order to exert light uniformity , the panel added a diffuser to achieve the effect of soft light , suitable for indoor lighting. Since the promotion of LED lighting applications , drive the switching power supply unit has also been widely used. Compared to conventional switching power supply , LED driver for a higher power requirements , high efficiency type , small size and low drive power pollution has become a mainstream technology research and development . This article PFC technology , quasi-resonant DC / DC converter technology, to design a low electromagnetic pollution switching power supply, both to ensure a high power factor, improved impact on the grid , but also ensures high efficiency, reliable and practical . This design uses two drivers drive power structure . Former circuit for the power factor correction stage . Detailed analysis of the work in the critical discontinuous mode Boost PFC circuit , main circuit parameters were derived and L6562 -based control design, and circuit design . Whichever is later stage resonant flyback converter circuit , introduced quasi-resonant flyback mode transformation and the theoretical basis and applications, and is based on the design of the rear stage NCP1207 DC / DC circuits. AP4313 power output using the constant current control . Finally, the experimental verification of the design of the lamp and the drive power is feasible .

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CLC: > Industrial Technology > Radio electronics, telecommunications technology > Radio equipment,telecommunications equipment > Power supply
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