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In this study a digitally controlled Light Emitting Diode (LED) driver operating with high power factor, dimming capability and reduced DC-link capacitance is proposed. The proposed LED driver circuit topology, designed to supply a 100 W LED module, is composed by two independent stages. The Power Factor Correction stage is implemented with the buck-boost DC/DC converter, operating in Discontinuous...
This paper presents a digitally controlled Light Emitting Diode (LED) driver with high power factor, universal input voltage, dimming capability and reduced DC-link storage energy capacitance. A two-stage structure composed by the Power Factor Correction and Power Control stages is proposed. The buck-boost DC/DC converter, operating in Discontinuous Conduction Mode is employed for power factor correction,...
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