在本論文中,我們發展出電流模式控制升降壓型開關電源的數學模型與推導出其分析解。並藉由MATLAB/SIMULINK與IsSpice電腦軟體的幫助,研究了以參考電流作為變化參數所造成的分叉與混沌的非線性現象。分叉圖、彭卡瑞映射,以及一些模擬的波形,用來驗證這些非線性現象的一致性。
In this paper, the modeling and analysis methods for the buck-boost switching power supply under current-mode control are developed. On the basis of the methods, the circuit mathematic models are constructed and the analytic solutions are also derived. Through the help of the MATLAB/SIMULINK and IsSpice, the bifurcation and chaos phenomena with the reference current as a varying parameter were mainly studied. Bifurcation diagrams, Poincare maps, and some simulation waveforms are used to verify the analysis results.