科研之友
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摘要
In this study, a high-step-down ratio resonant converter is presented, which integrates one coupled inductor and one resonant energy-transferring capacitor with small capacitance. The resonant energy-transferring capacitor resonates with the leakage inductance of the coupled inductor. Furthermore, the energy-transferring capacitor is connected between the input voltage and the coupled inductor. Therefore, a high-step-down voltage gain can be achieved, which is lower than those of the traditional synchronously-rectified buck converter and the tapped-inductor buck converter. Moreover, the modulated switching frequency span is low; thus, it is easy to design the output filter. In addition, since the small value of the resonant energy-transferring capacitor is used, the power density can be upgraded. Finally, some analyses and experimental results are given to verify the feasibility and effectiveness.
- 出版日期2016-4-20
