【摘要】 文中介绍了一种常用的开关变换器建模方法——能量守恒平均法,依据能量守恒平均原理,建立连续模式下Buck变换器的直流和小信号模型,并给出开环传递函数。仿真分析表明,该模型能够准确描述变换器的频域特性,验证了理论推导的有效性。更多还原

【Abstract】 This paper presents a modeling method commonly used in switching converters-the average of energy conservation.Based on the average conservation of energy principle,a continuous mode DC buck converter and the small-signal model are established,and given the open-loop transfer function.The proposed model is validated by detailed simulation and is shown to accurately predict small-signal frequency domain characteristics.更多还原