A Novel Cost-Effective AC-DC Power Supply for Indoor LED Lighting Applications

Abstract

This paper proposes a novel AC-DC power supply with features of power-factor correction (PFC) and cost-effectiveness for indoor LED lighting applications. The proposed AC-DC power supply combines an inverse buck-boost converter with a lossless snubber, and also includes input-current shaping. An 1SW(60V/0.3A)-rated prototype power supply has been successfully developed and implemented for operating with an input utility-line voltage of 110 V. Satisfactory results have demonstrated the functionality of the presented AC-DC power supply and its suitability for indoor LED lighting applications.