Active boost converter a study on the characteristics of power factor correction circuits with input active boost converter

Switching power supply is widely used in many industrial fields. Power factor correction (PFC) circuits have tendency to be applied in new power supply designs. The input active power factor correction (APFC) circuits can be implemented using either the two-stage approach or the single-stage approach. The single-stage PFC circuit has advantage to reduce the number of components. However, unlike in the two-stage approach, the dc voltage on the energy storage capacitor in a single-stage PFC circuit is not well regulated. As a result, in universal line application (90 - 265 Vac), the storage capacitor voltage varies with the load and line variation. In this paper, the performances of output voltage regulation and transient response are clarified. The validity of designed boost PFC circuit is confirmed by MATLAB simulation and experimental results.