Ćuk DC-DC Converter with Multilevel Flying Capacitor Switching Cell

The large industries that work with high power demand increasingly want to optimize their production lines. In this context, several studies and research about the multi-level power converts have been realized in last years, as they have several advantages when compared to traditional two-level topologies: better harmonic performance, filters reduction, lower components voltage stress and higher power process capability. The present work proposes a Cuk DC-DC converter composed of multilevel flying capacitor asymmetric totem-pole switching cell. This structure is achieved by replacing one leg of switch/diode of the traditional two-level asymmetric totem-pole cell by a similar multilevel flying capacitor cell. This work presents a brief analysis of the operation of the proposed converter, as well as the control strategy to keep the output voltage at the desired value and contains simulation results to validate the theoretical approach.