I. Introduction
The single-phase boost rectifier has become the most popular topology for power factor correction (PFC) in general purpose power supplies. Today there is interest in developing high-frequency electronics ballast to replace the classical electro-magnetic ballast in fluorescent lamps. These electronics ballasts require an AC/DC converter. To satisfy the harmonic current injection from electronic equipment and to maintain high power quality, a high-power factor rectifier may be used [1]. In this context, some new single-phase rectifiers (AC/DC) topologies came up for feeding DC loads in such a way that the AC current supply line shows a high power factor and low current harmonics [2], [3]. AC-to-DC converters are circuits that alleviate the main drawbacks found in DC/DC converters, namely, the low input-power factor and the considerable pollution introduced in the line source [4].