Mobile QR Code QR CODE : The Korean Institute of Power Electronics
Title A Study on Optimal Selection of Inductance for Power Factor Improvement of Buck AC/DC LED Driver With Wide Input Voltage Range
Authors Marn-Go Kim
DOI 10.6113/TKPE.2021.26.4.302
Page pp.302-305
ISSN 1229-2214
Keywords Normalized output current; Buck AC/DC LED driver; PF (Power Factor); Constant slope compensation; Wide input voltage range
Abstract Selection of the optimal inductance for power factor improvement of a buck AC/DC light-emitting diode (LED) driver with wide input voltage range is described in this study. The power factor change based on the slope compensation is obtained for various normalized output current (NOC) values using discrete-time domain analysis. The possibility of implementing constant slope compensation is described using power factor curves for various NOC values. is chosen for the value of inductance with consideration for the simple implementation and reduction of inductor size. Experimental results of the inductance corresponding to are presented.