电源学报2018，Vol.16Issue(2)：104-109,130,7.DOI:10.13234/j.issn.2095-2805.2018.2.104
一种新型无电解电容Buck-Boost正反激LED驱动电路的研究
Study on Novel Electrolytic-capacitor-free Buck-Boost Forward-flyback LED Drive Circuit
摘要
Abstract
An electrolytic-capacitor-free Buck-Boost forward-flyback LED drive circuit is proposed in this paper, which inherits the advantage of the traditional drive circuit, i.e., the energy of leakage inductance is fed back to the input terminal. Considering that the traditional topology presents large output voltage ripples at the increasing output power without electrolytic capacitor, a forward-flyback circuit is successfully applied to the traditional drive circuit of DC/DC level based on the existing research on LED lighting driver. The transformer have capacitances as the center energy storage elements on both the primary and secondary sides,and it works in forward-flyback modal,which improves its power density;meanwhile,the transformer have freewheel inductance on its secondary side, thus greatly reducing the output voltage ripples. The steady-state operating characteristics of the converter are analyzed in detail. Finally, an experimental prototype of 30 W output was manufactured,and the test results verified the reasonability and feasibility of the novel design.关键词
功率因数校正/Buck-Boost正反激/单极LED驱动/无电解电容Key words
power factor correction/Buck-Boost forward-flyback/single-stage LED drive/electrolytic-capacitor-free分类
信息技术与安全科学引用本文复制引用
曾怡达,朱仁伟,唐丽,李宝..一种新型无电解电容Buck-Boost正反激LED驱动电路的研究[J].电源学报,2018,16(2):104-109,130,7.基金项目
中央高校基本科研业务费专项基金资助项目(SW JTU2011CX003EM,SWJT2011ZT002EM)Project Supported by the Fundamental Research Funds for Cen-tral Universities(SWJTU2011CX003EM, SWJT2011ZT002EM) （SW JTU2011CX003EM,SWJT2011ZT002EM）
