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當前位置:首頁 » 博揚智能資訊中心 » 變換器/變壓器 » 何為LLC諧振變換器的特點?

何為LLC諧振變換器的特點?

發表時間:2021-02-23 16:50【 閱讀量:-查看手機網址
掃一掃!何為LLC諧振變換器的特點?掃一掃!

  LLC諧振變換器的特點:


  1.基于LLC諧振網絡的半橋變換器具有EM小、效率高等優點,與PWM控制變換器相比有著其獨特的應用領域。


  2.LLC湝振變換器是通過調節開矣頻率來調節輸出電壓的,也就是在不同的輸入電壓下它的占空比保持它的掉電維持時間特性比較好,可以廣泛地應用在對掉電維持時間要求比較高的場合。


  3.LLC振變換器中副邊二極管上的電壓應力比不對稱半橋變換器多,因為,在LLC諧振變換器中副邊二極管上的電壓應力是輸出電壓的2倍,因此,在lc諧振變換器中可以選擇耐壓比較低的二極管,從而可以提高電路的效率。


  4.在LLC諧振變換器中上下開關管的占空比是相等的。


  5.在輕負載時,工作頻率逐漸升髙,工作在降壓區域內;而在重負載時,工作頻率逐漸降低,工作在升壓區域內。


  6.原邊輸入電壓為方波,電流為近似正弦波,而變壓器輸出電壓也是方波,電流也是正弦波;


  7.在全負載范圍內都具有較高的轉換效率,而且頻率變化范圍比較窄等。


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