液晶与显示2012，Vol.27Issue(5)：671-676,6.DOI:10.3788/YJYXS20122705.0671
单级PFC LED驱动电源的研究与设计
Study and Design of Driving Power Indoor LED with Single-Stage Power Factor Corrector
摘要
Abstract
The paper introduces the principle of LED drive power with the single-stage Power Factor Corrector(PFC). The structure principle of constant-voltage source AC/DC with single-stage PFC is analyzed and the solutions of the questions related to the constant-voltage source with single-stage PFC is given. It is a key part to design of constant-current,the principle and design step of constant-current drive chip BP2808 are given,meanwhile,the manual dimmable LED is added,the multi-resonant self-excited oscillator consisted by NE555 is used to generate a fixed frequency and produce 0. 09 %＜D＜99. 91% adjustable duty cycle pulse width modulation(PWM) output to adjust LED's light. The results show the design could achieve a wide range of adjustment duty cycle PWM pulse wave and it is satisfied with the requirements of the Power Factor Corrector, meanwhile, the high efficiency and low-cost is realized,the paper conform to the trend of the development of LED drive power.关键词
单级PFC恒压源/恒流驱动/LED调光Key words
single-stage PFC Constant-voltage/constant-current driving/dimming LED分类
信息技术与安全科学引用本文复制引用
张建飞,史永胜,宁青菊,牛力..单级PFC LED驱动电源的研究与设计[J].液晶与显示,2012,27(5):671-676,6.基金项目
陕西省教育厅专项研究计划(No.11JK0837) （No.11JK0837）
