CAJ | 학술논문

发挥LED的高效率、长寿命等诸多优点需要可靠、高效率的LED驱动电源,而恒流LED驱动电源是未来发展的趋势。基于TOP222设计了一款反激式恒流LED驱动电源,重点设计了恒流驱动电源的变压器和恒流反馈回路。实验结果表明：该电源输出额定电流为1 A,额定功率为10 W,低负载情况下以恒压方式输出。具有较好的稳定性,恒流特性和较高的效率,能够作为稳定、高效的LED驱动电源。
발휘LED적고효솔、장수명등제다우점수요가고、고효솔적LED구동전원,이항류LED구동전원시미래발전적추세。기우TOP222설계료일관반격식항류LED구동전원,중점설계료항류구동전원적변압기화항류반궤회로。실험결과표명：해전원수출액정전류위1 A,액정공솔위10 W,저부재정황하이항압방식수출。구유교호적은정성,항류특성화교고적효솔,능구작위은정、고효적LED구동전원。
A reliable,efficient LED driver plays an important role in unleashing many advantages of LED,such as high efficiency, long life-time. A constant current fly-back LED driver based on TOP222 is designed, and the transformer of the constant current power supply and the constant current feedback circuit are deeply researched. The experiment shows that,the output current of the LED driver is 1 A,the output power is 10 W,the power supply works in constant voltage mode within the low load situation. The driver featured with good stability,constant-current characteristic,and high efficiency,is capable for driving LED.