隨著電動車輛的發展，在電動車系統中的電源轉換器更被重視，其中介於電動車電池組與輔助電路之間的寬輸入範圍轉換器是一重要研究課題。本論文以碳化矽功率元件實現了具有升壓整流器之寬輸入範圍轉換器，論文首先探討碳化矽功率元件的特性及諧振轉換器的工作原理，並詳細分析諧振電容上的電壓及電流應力。最後，以數位訊號處理器TMS320F28335為控制器，實現輸入直流電壓200-400 V、輸出電壓48 V、額定功率為1 kW之全橋直流諧振轉換器。由實驗結果得知，此轉換器可操作在寬輸入電壓範圍，相較於傳統諧振轉換器，此轉換器操作頻率範圍減小，而最高轉換效率為91.07%。

With the development of electric vehicles (EVs), people have paid more attention to the converters in the EV systems. Among the converters, the wide input voltage range converter implemented between the EV battery pack and the auxiliary circuits is an important research topic. The SiC-based wide input voltage range converter with boost function is implemented in the thesis. The characteristics of SiC power devices and the operating principles of the resonant converter are studied. In addition, the voltage and current stress on the resonant capacitor are also analyzed in detail. Finally, the laboratory prototype of wide input range full-bridge (FB) DC-to-DC resonant converter with active-boost rectifier based on SiC power transistors with the input voltage 200 – 400 V, output voltage 48 V, and rated power 1 kW is implemented with a digital signal processor TMS320F28335. As the experimental results show, this converter can be operated in wide input range. Also, the operating frequency range is smaller compared to conventional resonant converter, and the highest efficiency is 91.07%.

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