由於數位控制器應用於直流-直流轉換器能帶來很多好處，本論文提出一個數位控制之不連續導通模式單電感雙輸出切換式轉換器，利用分時多工機制，轉換器只需要使用一個電感元件就能提供兩組獨立的輸出電壓，因此非常適合現今可攜式產品與SoC設計。對於數位控制器裡各個方塊的設計考慮將一一被探討，當中包括類比至數位轉換器、數位補償器以及數位寬度調變器。為了節省晶片實現面積，本文使用單一查表法之數位補償器與修正過之混合式數位寬度調變器。
另外，本文開發一套方便使用的GUI設計軟體，以簡化整個系統設計到實現的驗證流程，其中高階的系統層次模型與低階的混合層次模型都在單一模擬平台Matlab/Simulink上完成，最後，本論文將比較模擬結果與FPGA實驗結果以證明設計系統之正確性。

Based on digital controllers offering significant advantages in DC-DC converters, this thesis proposes a digital PWM controller for single-inductor dual-output switching converter operating in discontinuous-conduction mode. By adopting time-multiplexing scheme, this converter provides two independent supply voltages using only one inductor, which is suitable for portable devices and system-on-chip integration. All design issues of each block including analog-to-digital converter, digital compensator and digital pulse width modulator are discussed. For low area consumption, single look-up table based compensator and modified hybrid DPWM are used.
Moreover, a user-friendly GUI design tool is developed in order to simplify the design and implementation verification. Both the system-level and mixed-level models are built under unique MATLAB/SIMULINK environment. Finally, the simulation and FPGA experimental results are compared to verify the validity of the proposed work.

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