本論文目的在研製一以數位訊號處理器為基礎的伺服器電源供應器，前級使用升壓型轉換器做為主動式功率因數修正器，後級部分使用具同步整流之全橋相移轉換器為電路架構。在數位式伺服器電源供應器上所使用的控制策略包含：平均電流控制模式、電壓控制模式、同步整流控制。數位式電源供應器相較於傳統的類比控制電源供應器能執行較複雜的控制模式，且具備可程式化，彈性設計、高可靠度，不易隨溫度變化影響等優點。在本論文中將使用數位比例-積分控制器來設計其回授補償控制，並分析其電路之小訊號模型。最後設計並實作出一台600 W 伺服器電源供應器，其輸入交流電壓為AC 90~240 V，輸出電壓為12 V，輸出電流為50 A，PF>0.9，THD 符合IEC 1000-3-2 Class D 之規範，並使用德州儀器TMS320F28035數位訊號處理器，以軟硬體搭配實作驗證其控制器參數。

The current thesis presents the design and implementation of a DSP-based server power. A boost converter is used as the front stage for active power factor correction and a phase-shift full-bridge converter with synchronous rectification is used as the DC-DC stage. The control methods used in the studied digital server power include average current mode control, voltage mode control, and synchronous rectifier control. Digital power supplies have the capability to implement complex control methods compared with conventional analog-control power supplies. It also has flexibility through programmability, higher reliability, and better noise and temperature immunity. Therefore, the current thesis proposes a digital PI (Proportional-Integral) controller as a feedback compensator, and analyzes the small-signal model. Finally, a digital signal processor Texas Instruments TMS320F28035 is applied to a 600 W prototype circuit of server power supply with input voltage of AC 90 V to 240 V, output voltage of 12 V, and output current of 50 A; PF>0.9; THD meets IEC 1000-3-2 Class D standard. These designed parameters of the controller are verified via software and hardware experiments.

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