High Power Factor Rectifier Based on Buck Converter Operating in Discontinuous Capacitor Voltage Mode

The Buck converter with LC input filter operating in discontinuous capacitor voltage mode has inherent power factor correction properties and continuous input current. The paper presents a detailed analysis of the converter operating in this mode, leading to design criteria. Finally, experimental results for a 48 [V.sub.dc]/100 W converter are presented. Index Terms--AC-DC power conversion, power conversion harmonics, rectifiers.