本文主要研製一單級式高頻脈波發光二極體驅動電路，此單級電路架構結合昇壓型功因修正電路和半橋串聯諧振電路，昇壓型功因修正電路之電感電流操作在不連續導通模式，使輸入電流能追隨輸入電壓達到高功率因數；半橋串聯諧振電路之輸出以高頻弦波經由橋式整流後驅動發光二極體模組，透過變頻的方式調整發光二極體電流，文中並討論發光二極體在高頻脈波驅動下之發光特性。本文亦探討發光二極體之等效電路對半橋串聯諧振換流器電路特性的影響，並分析其動作原理及電壓增益。最後，實際研製一40 W單級式高頻脈波發光二極體驅動電路，輸入電壓可操作於100~120 Vrms，效率為92.96 %以上，最高滿載效率為93.14 %。

In this thesis, the design and implementation of a single-stage LED driver with high frequency pulse is presented. The proposed circuit integrates a boost power-factor-correction converter and a half-bridge resonant inverter into a single-stage LED driver. The boost inductor is operated at discontinuous conduction mode to achieve high power factor and low current harmonic distortion. The half-bridge resonant inverter is used to drive full-bridge rectified LED module. In addition, the frequency modulation method is adapted to regulate LED current. Furthermore, the effectiveness of the LED equivalent model on the resonant circuit and the light characteristics of the LED with high frequency pulse are discussed. Finally, a single-stage high frequency pulse LED driver is implemented to drive a 40 W LED module. Experimental results show that the proposed circuit can be operated at 100~120 Vrms and the highest efficiency is 93.14 %.

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