Resonant boost converter operating above its resonant frequency

The paper contains an investigation of the high frequency operation of a dual channel resonant boost converter. The energy is transmitted through the two channels of the converter from its input to the output using a switched capacitor. Because of the two channels the load of the converter elements is distributed therefore its application is recommended in the medium or higher power ranges. An advantage of the converter is that in discontinuous current conduction mode (DCM) it can work in soft-switched mode too. A drawback of DCM operation is the higher output voltage ripple and the unfavorable utilization of the power handling capabilities of its components compared to the continuous current conduction (CCM) operation. The paper presents the conditions of operating the converter above the resonant frequency of its inherent L-C ringing circuit, and represents its beneficial effects. The considerations are verified by simulation results