Title :
An electrolytic capacitor-free single stage Buck-Boost LED driver and its integrated solution
Author :
Peng Fang ; Yan Fei Liu
Author_Institution :
Dept. of Electr. & Comput. Eng., Queen´s Univ., Kingston, ON, Canada
Abstract :
For a conventional offline Buck-Boost LED driver, significant low frequency ripple current is produced when a high power factor has been achieved. In this paper, an innovative LED driver technology based on the Buck-Boost topology has been proposed. The featured configuration has greatly reduced the low frequency ripple current without compromising power factor performance. High efficiency and low component cost features have also been retained from conventional Buck-Boost LED driver. A 10W, 50V-0.2A experimental prototype has been constructed to verify the performance of the proposed technology.
Keywords :
driver circuits; electrolytic capacitors; light emitting diodes; power convertors; power factor; LED driver technology; buck-boost topology; current 0.2 A; electrolytic capacitor-free; integrated solution; low frequency ripple current; power 10 W; power factor; single stage buck-boost LED driver; voltage 50 V; Capacitors; Inductors; Light emitting diodes; Logic gates; Reactive power; Topology; Voltage control;
Conference_Titel :
Applied Power Electronics Conference and Exposition (APEC), 2014 Twenty-Ninth Annual IEEE
Conference_Location :
Fort Worth, TX
DOI :
10.1109/APEC.2014.6803489
