Increasing the switching frequency is essential for enhancing converter performance and power density

yet high switching losses limit the high-frequency operations. Although interleaved parallel

multi-level

and soft-switching techniques can effectively boost the equivalent switching frequency (ESF)

challenges such as current-sharing imbalance

voltage unbalance

and commutation complexity may decrease the reliability and increase costs. To address these issues

this paper proposes an independently driven parallel switching-cell architecture with a novel control strategy. By adjusting duty cycles and employing interleaved

phase-shifted switching sequences

the proposed method enables n parallel semiconductor switching cells to achieve an n-fold increase in ESF without altering the actual switching frequency (ASF). This approach significantly reduces filter volume and switching losses. Finally

experiments on a phase-shift parallel switching cell (PSPSC) based bidirectional buck-boost prototype validate the effectiveness and accuracy of the proposed frequency doubling control strategy.