本論文旨在分析初級側穩壓技術應用於返馳式轉換器之電路動作原理，且和傳統次級側回授穩壓作比較。論文中並探討應用於連續導通模式、準諧振式和不連續導通模式的初級側電壓偵測方式，並研究改善初級側穩壓準確度之方法，利用實作電路驗證其效能。本論文實作電路係採用操作在連續導通模式的初級側穩壓返馳式轉換器，輸入為90Vac到264Vac;輸出為19V/45W，以高效率、低空載功耗為設計目標，透過實作電路驗證初級側穩壓方式的效能。經過測試實作電路後，轉換器之平均效率可達到87.7%以上，且空載功耗都低於0.1W，電壓調整率都在+/-3%之內。所測得結果皆能符合主流規格之要求。

This thesis presents a study on the primary side regulation (PSR) technique for flyback converters and compares with the conventional secondary side regulation (SSR) technique. The eligible primary side regulation techniques for continuous conduction mode (CCM), quasi-resonant (QR), and discontinuous conduction mode (DCM) operations are studied to improve the accuracy of feedback regulation. A laboratory prototype for flyback converters with primary side regulation is implemented and tested under 90Vac to 264Vac input voltage and 19V/45W output specifications. The experimental results are shown for verifying the performance of PSR technique. After the verification of this laboratory prototype, the average efficiency of the converter can reach 87.7%, the no-load power consumption under 0.1W, and the voltage regulation within +/-3%. All the performance indices meet the requirements of mainstream market specifications.

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