随着高功率发光二极管在照明和照明中的广泛应用，高功率驱动电路的设计变得

随着高功率发光二极管在照明和照明中的广泛应用，高功率驱动电路的设计变得越来越重要。在快速发展的带动下，目前主导的驱动电路具有快速跟进，各种驱动模式并存，设计不同。没有好的驱动集成电路，发光灯不能反映优势。高功率发光二极管是一种电流型器件，通过对电流的严格控制是恒定的和重要的，也是实现发光二极管的调光，满足各种需求。
本文对LED的一些特性进行了非常细致介绍，并且简单介绍驱动电路所涉及到的相关知识，然后我们又研究了一些效率很高、价格适中又能实现亮度可调的恒流驱动电路，用SY7701来以实现大功率LED的驱动。分析了驱动电路的工作原理，对电路进行了物理电路的制作，并用示波器观察了电路的输出波形。
本文通过试验结果表明，该驱动电路能保证发光二极管的发光性能非常稳定，照明亮度达到要求，达到了预期的要求，并且效率很高。在其他各个方面也有非常广泛的应用前景。

結果 (英文) 1:

High power light emitting diodes are widely used in lighting and lighting, high power drive circuit becomes more and more important. In the fast-growing, led by current led drive circuit with fast track, coexistence of various driving modes, different design. Without a good driver IC, led lights do not reflect advantages. High power light emitting diode is a current-mode devices, through strict control over the current is constant and important, is also the dimming of the light emitting diode, to meet a variety of needs.This paper has LED some of the features very detailed introduction and brief knowledge of drive circuit involved, then we study some very efficient, affordable and can achieve constant-current drive circuit with adjustable brightness, to achieve high power LED driver with SY7701. Analysis of work principle of the drive circuit, making physics circuits the circuits, and observing the output waveform.Through test results showed that the driver circuit can ensure the luminescence properties of LEDs are very stable, lighting to meet the requirement, meet the expected requirements, and efficiency is very high. Aspects also have a very wide range of other applications.

結果 (英文) 3:

With the wide application of high power LEDs in lighting and lighting, the design of high power drive circuit is becoming more and more important. Driven by the rapid development, the current driven circuit has a fast track, a variety of driving modes coexist, the design is different. There is no good driver integrated circuit, light emitting lights can not reflect the advantages. High power light emitting diode is a kind of current type device, through the strict control of current is constant and important, but also to achieve light emitting diode dimming, to meet the various needs.In this paper, some properties of LED were very detailed, simple and introduce the drive circuit related to the related knowledge. Then we study the efficiency is very high, moderate price and can realize brightness adjustable constant current drive circuit, SY7701 to achieve high power LED driver. The operation principle of the driving circuit is analyzed, the physical circuit is made, and the output waveform of the circuit is observed by the oscilloscope.In this paper, the test results show that the drive circuit can ensure the luminous performance of the light-emitting diode is very stable, the brightness of the lighting to achieve the requirements, to achieve the desired requirements, and the efficiency is very high. In all other aspects also has a very wide range of applications.