摘要
分析具有PFC的反激式隔离型AC/DC的LED恒流驱动电源的设计方法。给出高效率和高功率因数条件下隔离高频变压器以及由UCC28810构成的功率因数校正电路的具体设计方案和相关参数的选择方法;阐述了由CC2530和SN3350构成的PWM恒流可调电路的工作原理。通过对实验样机在输入电压90 V^260 V范围内进行多样实验测试取均值结果表明,系统的功率因数均值在0.97以上,AC/DC变化电路的效率高达86.5%;恒流模块的效率达到93.2%,实现恒流可控的PWM的调光功能。
The design method for constant current LED driver circuit based on PFC fly- back isolated AC / DC is analyzed. Concrete design scheme and associated parameter selecting method for isolated high- frequency transformer as well as the power factor correc-tion circuit constituted by UCC28810 with high efficiency and high power factor are proposed. Working principle of PWM constant current adjustable circuit constituted by CC2530 and SN3350 is also elaborated. Diverse tests are conducted using an experimental prototype with the input voltage range of 90 V ~ 220 V. The measurement averaging results show an average system power factor of above 0. 97 and the AC / DC conversion efficiency of up to 86. 5 %. The efficiency of constant current module is up to 93. 2 %, suc-cessfully attaining the constant current PWM controlled dimming function.
出处
《电子技术应用》
北大核心
2015年第8期120-123,共4页
Application of Electronic Technique
基金
国家青年科学基金资助项目(61405086)
福建省教育厅科研项目重点资助项目(JK2014027)
