本論文主要研製一台負電壓極性輸出的交流-直流轉換器，電路拓樸採用'CUK功率因數修正電路轉換器為基礎，利用電路架構本身具有昇降壓特性且輸入與輸出電流為連續，具有低漣波優點。使用UC3842控制，利用箝位電流模式控制法，配合電壓隨耦控制功能特性，來達到功率因數修正之目的。文中並針對其'CUK功率因數修正電路轉換器、箝位電流模式控制法、電壓隨耦控制法及斜率補償等架構做原理分析並加以說明。並利用PSIM模擬軟體進行電路模擬，驗證及確認其設計之可行性。最後設計實作一台100W箝位電流模式控制之'CUK功率因數修正轉換器，將實測結果和理論值相互印證。

This thesis presents an AC-DC converter with negative voltage output. The circuit topology is based on the 'CUK power factor correction converter with inherent voltage step-up/down features. The input and output currents are continuous, low ripple currnet can be achieved. Using UC3842 control IC and the clamp current mode control and voltage-follower control, the studied AC-DC converter has high input power factor. The operating principles for the 'CUK power factor correction converter, clamp current mode control, voltage-follower control, and slope compensation are anlyzed and discussed. Some PSIM simulation results are shown to verify feasibility of the design. An 100W clamp-current-mode control 'CUK power factor correction converter is implemented and tested. The experimental results are fully agreed with the theoretical anlysis.

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