A Single-Switch LED Tube Light Driver with Coupled-Inductor and Power-Factor-Correction for Indoor Lighting Applications

This paper presents a single-switch AC-DC LED tube light drier with coupled-inductor and power-factor-correction (PFC) for indoor lighting applications. The presented LED tube light driver including input-current shaping feature integrates an inverse buck-boost converter with coupled-inductor and a lossless snubber. A prototype circuit has been successfully developed and implemented for supplying an 18W(60V/0.3A)-rated LED tube light with an input utility-line voltage of 110 V. Satisfactory results have demonstrated the functionality of the presented AC-DC LED tube light driver and its suitability for indoor lighting applications.