开关电源的瞬态建模和分析(Ⅰ)——状态空间平均法

Transient Modeling and Analysis of Switching Regulators(Ⅰ)——State Space Averaging Approach

开关稳压电源的控制电路设计、瞬态分析与仿真的核心问题是建立一个恰当的模型。本文简要介绍开关变换器的瞬态(大信号及小信号)分析和直流分析。详细介绍了状态空间平均法建模分析,以Boost开关变换器(CCM运行)为例,并给出开关变换器的统一等效电路模型。

The use of an appropriate model is central to the control design,transient analysis and simulation of a switching regulator.The transient(large and small signal)analysis and DC analysis of a switching converter is briefly introduced.The state space averaging approach is described in detail.The boost converter operating in CCM is used as an illustrative example.An unified equivalent circuit model of the switching power converters based on the state space averaging is given.