單端反激式開關電源的設計及仿真研究

摘要：電源是各類電子設備的重要組成部分。設計了以SG1844控制器為核心的單端反激式開關電源的電路 ，給出了系統的變壓器、電壓環以及電流環的主要參數設計方法，建立了模型并運用ORCAD/PSPICE對開關電源的整體電路進行仿真實驗，結果表明該設計的可行性。 敘詞：開關電源 雙環控制 高頻變壓器 PSPICE仿真 Abstract：Various types of electronic equipment, power supply is an important part. SG1844 controller is designed with the core of single-ended flyback switching power supply circuit, given the system transformer, the voltage loop and current loop of the main parameters of the design method, a model and the use of ORCAD/PSPICE for the overall switching power supply circuit simulation results show the feasibility of the design. Keyword：Switching power supply, Dual-loop control, High frequency transformer, PSPICE Simulation