Abstract
The discontinuous current mode (DCM) boost power factor correction (PFC) converter features zero-current turn-on for the switch, no reverse recovery in diode and constant frequency operation. However, due to DCM, the energy transfer does not cover the whole switching cycle, the peak and RMS values of the inductor current are large, which also occurs to the switch and diode. This increases not only the current stress of the power components but also the conduction and switching turn-off loss, which lowers the efficiency of the converter. An optimum utilization control of switching cycles (OUCSC) is proposed in this paper. The efficiency is improved as the critical inductance is increased and the peak and RMS current values are therefore decreased. The proposed method also achieves an output voltage ripple or an output storage capacitance reduction. The experimental results from a prototype of 120W are given to verify the effectiveness of the proposed method.
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
