DocumentCode :
735286
Title :
A 5.5W AC input converter-free LED driver with 82% low-frequency-flicker reduction, 88.2% efficiency and 0.92 power factor
Author :
Yuan Gao ; Lisong Li ; Mok, Philip K. T.
Author_Institution :
Dept. of ECE, Hong Kong Univ. of Sci. & Technol., Hong Kong, China
fYear :
2015
fDate :
17-19 June 2015
Abstract :
This paper presents a 95VAC-120VAC mains powered converter-free LED driver for general lighting application. A quasi-constant power control scheme is proposed to significantly reduce the low-frequency-flicker, combined with a valley fill circuit to maintain good power factor performance. The driver achieves 88.2% efficiency and 0.92 PF with only 18% flicker at 110VAC 60Hz input and does not require any magnetics or electrolytic capacitors.
Keywords :
driver circuits; flicker noise; interference suppression; light emitting diodes; lighting; power control; power factor; semiconductor device noise; AC input converter-free LED driver; frequency 60 Hz; lighting application; low-frequency-flicker reduction; power 5.5 W; power factor; quasiconstant power control scheme; valley fill circuit; voltage 95 V to 120 V; Capacitors; Light emitting diodes; Reactive power; Switching converters; Voltage control; Voltage fluctuations; Voltage measurement;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
VLSI Circuits (VLSI Circuits), 2015 Symposium on
Conference_Location :
Kyoto
Print_ISBN :
978-4-86348-502-0
Type :
conf
DOI :
10.1109/VLSIC.2015.7231293
Filename :
7231293
Link To Document :
https://search.ricest.ac.ir/dl/search/defaultta.aspx?DTC=49&DC=735286
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