电子器件Issue(2)：291-299,9.DOI:10.3969/j.issn.1005-9490.2015.02.014
一种新型原边反馈反激式数字控制LED驱动电源设计∗
Design a New Primary Side Feedback Flyback Digital Control LED Driver
摘要
Abstract
A new primary side feedback flyback digital control LED driver is presented, using corner detection to measure the discharge time of secondary circuit and achieving accurate constant output current and high power factor by increment PID. Through analysis with the control principal,the detailed design process is provided and the control based on FPGA is finally realized. The design of the prototype machine and the verification of algorithm are also carried out. The experiment results show that the accuracy of constant current has reached 6% and power factor correction exceeds 0.97 and the efficiency is up to 80%. The circuit is simple and has high control precision. It is of highly practical value.关键词
数字控制/功率因数/恒流/单级/原边控制Key words
digital control/power factor/constant current/single-stage/primary side分类
信息技术与安全科学引用本文复制引用
顾星煜,史博文,赵保付,欧阳亦可,徐申,孙伟锋..一种新型原边反馈反激式数字控制LED驱动电源设计∗[J].电子器件,2015,(2):291-299,9.基金项目
江苏省高等学校大学生实践创新训练计划项目( S2013038) （ S2013038）
