High power LED (Light Emitting Diode) has a wide application in lighting for its good features. In this paper, the electrical properties of LED are first introduced, and then a series-parallel connection of LEDs with more stability and reliability is adopted on the basis of the features of parallel connection and series connection. After that, a flyback circuit for driving high power LED group with a constant-output-current is investigated, and the parameters are designed. According to the driving method, a circuit prototype with an output of 10.0 V/1.10 A is fabricated and tested in rated load and overload conditions to verify its current stability. Experimental results show that the LED drive circuit has a high accuracy, good stability and high efficiency, suggesting that the proposed method might be practical for driving high power LEDs.
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机译：大功率LED（发光二极管）因其良好的功能而在照明领域得到了广泛的应用。本文首先介绍了LED的电学特性，然后根据并联和串联的特点，采用了具有更高稳定性和可靠性的LED串联-并联连接。之后，研究了用于以恒定输出电流驱动大功率LED组的反激电路，并设计了参数。根据驱动方法，制造了输出为10.0 V / 1.10 A的电路原型，并在额定负载和过载条件下进行了测试，以验证其电流稳定性。实验结果表明，该LED驱动电路具有较高的精度，良好的稳定性和较高的效率，表明该方法对于驱动大功率LED可能是实用的。
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