本論文旨在研製一以數位訊號處理器為主體架構的伺服器電源供應器，整體架構前級為主動式功率因數修正器並以昇壓型轉換器做為電路架構，在後級部分使用具同步整流之全橋相移零電壓切換轉換器為電路架構。相較於類比控制電源供應器，數位電源具備可控性高、程式化具彈性、高可靠度，不易隨溫度變化影響等優點。因此，在本文中使用數位比例積分控制器做為回授補償控制器。最後使用德州儀器TMS320F28035數位訊號處理器，設計並實作一台600W 伺服器電源供應器，其輸入交流電壓為AC 90~270V；輸出電壓為12V；輸出電流為50A。輸入功率因數均高於0.9，輸入電流諧波可滿足IEC 61000-3-2 Class D規範要求。透過實驗結果，驗證所提出架構之可行性。

This thesis presents the design and implementation of a DSP-Based server power. For front-stage, a boost converter is used for active power factor correction, whereas a phase-shifted full-bridge converter with synchronous rectification is used for DC-DC stage. Compared with the analog control power supplies, the studied digital power can be able to implement complicated control methods with flexible programmability, higher reliability, better noise and temperature immunity. Therefore, this thesis proposes a digital Proportional-Integral (PI) controller for feedback compensation and analyzes the small-signal model. Finally, a digital signal processor (DSP) chip Texas Instruments TMS320F28035 is applied to realize the digital controller for a 600W prototype circuit with AC 90~270V input voltage, 12V output voltage and 50A output current. The input power factor (PF) can be higher than 0.9 and the input current harmonics can comply with IEC 61000-3-2 Class D standard. The experimental results are shown to verify the feasibility of the proposed schemes.

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