An ac-dc single-stage driver for High Brightness Light-Emitting Diodes with galvanic isolation is presented in this paper. The driver is based on a Dual Inductor Current-Fed Push-Pull converter with each inductor operating in Boundary Conduction Mode. The interleaving between the two inductors enables the converter to reduce the high input current ripple inherent to a BCM. Moreover, it is fully compliant with IEC 1000-3-2 Class C and it is able to achieve a high Power Factor. Its low component count, simplicity and overall outstanding characteristics make this current-fed topology suitable for medium power range HB-LED drivers in low cost applications. The proposed topology has been tested on a 100W prototype for the full range of the US single-phase line voltage, feeding several HB-LED strings, with an output voltage equivalent to 48V at full load. The prototype achieves a maximum efficiency of 92% with a 0.99 power factor, 8% THD at full load while guaranteeing good quality light.