A power factor enhancement converter and power supply device comprising power factor enhancement converters

摘要

A plurality of circuit blocks are provided, each comprising: a first series circuit including a first correction element and a first switching element connected in series; a second series circuit comprising a second correction element and a second switching element connected in series; and a capacitor, wherein output terminals are connected to both ends of the first series circuit, both ends of the second series circuit and both ends of the capacitor. Input terminals of the respective circuit blocks are connected in series. An AC power source is connected through a choke, thereby solving the problem.