本論文主要目的係研製一具高效能之12 V單輸出電源供應器，前級交流/直流電路採用具有零電流切換之雙相交錯式功率因數修正電路，主要目的在於提高效率、提升功率因數並幫助分散元件熱源。後級直流/直流轉換器採用全橋式同步整流串聯諧振電路，其以一次側零電壓切換與二次側利用開關元件替換整流二極體來提高效率。
本論文最後實際製作一部750 W規格為12 V/62 A之單輸出電源供應器，其中實作電路之控制IC分別為德州儀器公司生產的UCC28060與虹冠公司生產CM6900G，電路雛型經測量結果證明，此兩種結構的配合下，可以有效提高效率。

This thesis is focused on the study and implementation of a high efficiency power supply with a single output. The converter consists of two stages. The first stage is the AC-DC converter which adopts an interleaved two-phase power factor correction circuit with zero-current switching (ZCS). The main purpose of this stage is to increase the converter efficiency, raise input power factor and assist to sink waste heat of components. The second stage is the DC-DC converter which adopts a full-bridge series-resonant converter (SRC) with synchronous rectifiers (SR). The zero-voltage switching feature can reduce the switching loss of primary power switches and synchronous rectification technology is used to eliminate the diodes losses.
A 750 W power supply with single 12 V/62 A output was fabricated and tested in the laboratory. The UCC28060 and CM6900G are used as the control ICs for the prototype circuit. Experimental results of a prototype circuit are shown to verify that the cooperation with these two structures can effectively reduce the switching losses and raise conversion efficiency.

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