本文基于NCP1205 芯片設(shè)計了一種新型準(zhǔn)諧振反激變換器。在分析該變換器工作原
理的基礎(chǔ)上，進(jìn)行了電路設(shè)計和工作頻率計算。由實驗結(jié)果，新型反激變換器具有良好的負(fù)載調(diào)整率、動態(tài)響應(yīng)快、輸出電壓紋波小及開關(guān)損耗低的特點。
關(guān)鍵詞：NCP1205 反激變換器 準(zhǔn)諧振 谷底開通
Study of a novel flyback converter Abstract: The authors developed a novel flyback converter using Quasi-Resonant technology with NCP1205.In this paper analyzes the principles of the converter. The circuit and the method for determining the operation frequency of this converter are given. The experimental results show that this novel flyback converter has many characteristics. Such as good regulation ratio of the load; fast response; low output voltage ripple and low switching loss.
Keywords: NCP1205,Flyback Converter, Quasi-Resonant（QR）,Valley-Switching