Title :
Applying one-comparator counter-based sampling to current sharing control of multi-channel LED strings
Author :
Hwu, K.I. ; Yau, Y.T.
Author_Institution :
Dept. of Electr. Eng., Nat. Taipei Univ. of Technol., Taipei, Taiwan
Abstract :
In this paper, a fully-digitalized current sharing strategy without any analog-to-digital converter (ADC) is presented and applied to light-emitting diode (LED) lighting. By doing so, the cost for digital control is reduced significantly. Above all, the proposed current sharing method has the capability of resisting variations in input voltage and component parameter. And this is verified by experiments and very suitable for LED street lighting.
Keywords :
current comparators; electric current control; light emitting diodes; lighting control; ADC; analog-to-digital converter; current sharing control; current sharing method; digital control; multichannel LED strings; one-comparator counter-based sampling; AC-DC power converters; Analog-digital conversion; Buck converters; Circuits; Costs; Digital control; LED lamps; Light emitting diodes; Sampling methods; Voltage control;
Conference_Titel :
Applied Power Electronics Conference and Exposition (APEC), 2010 Twenty-Fifth Annual IEEE
Conference_Location :
Palm Springs, CA
Print_ISBN :
978-1-4244-4782-4
Electronic_ISBN :
1048-2334
DOI :
10.1109/APEC.2010.5433588
