本論文主要研製「液晶顯示器整合型電源供應器」，前級為昇壓型功因修正電路，後級包含直流/交流換流器與直流/直流轉換器，其中高壓輸入換流器用以驅動冷陰極管，雙組輸出LLC諧振轉換器則用以提供系統直流電源。整合型電源供應器可大幅縮減現有電源供應器的用料成本，並具有高效率高功率密度的優點。本論文首先探討電路架構應用於整合型電源供應器之特性與優缺點，並分析電路工作原理及設計過程。最後實際製作「液晶顯示器整合型電源供應器」，電路之輸入交流市電電壓為90 V~264 V，所驅動的16支燈管電流誤差率均維持在±3 %，且面板均勻度可達81.4 %以上；雙組輸出LLC諧振轉換器輸出12 V/6 A及5 V/6 A，負載電壓調整率均維持在±5 %以內。在220 V輸入交流電壓時，系統滿載效率為89.1 %，功率因數可達0.99。

In this thesis, a two-stage integrated power supply for liquid crystal display (LCD) is studied and implemented. The front stage is a boost converter with power-factor correction (PFC) function. The second includes a resonant inverter with high-voltage input and an LLC resonant converter with dual outputs. The resonant inverter drives the cold-cathode fluorescent lamp (CCFL) backlight module, and the LLC resonant converter supplies the LCD driving system with a DC source. In comparison with conventional power-supply units, an integrated power supply can not only save significant cost and material but also possess high efficiency and high power density. The characteristics of the topology that is used for the integrated power supply are discussed, and the operation principles and design process are also studied in this thesis. Finally, an integrated power supply with universal AC input (90 V~264 V) is performed. The lamp-current error associated with 16 sample CCFLs can be maintained at ±3 %, and the panel uniformity is above 81.4%. The voltage regulation of the LLC resonant converter with dual outputs, 12 V/6 A and 5 V/6 A, is ±5 %. When 220 V input voltage is applied, the efficiency of the proposed power supply is 89.1 %, and the power factor can be up to 0.99 at the full-load condition.

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