A New Digital Controller for Boost PFC Converter with the Reduced Harmonic Distortion at the DCM Mode

In this paper, motivated by improving the characters of the power factor correction (PFC) converter at the discontinuous-conduction mode (DCM), a new digital controller for the digital PFC converter is proposed. The digital controller mainly consists of the modulation control loop and the self-adjusting voltage control loop. The simulation results demonstrate that the converter with the proposed digital controller can aim high output stability and reduced harmonic distortion.