Boost时间平均模型的具体资料，开关变换器的状态空间平均建模和分析方法存在计算复杂、物理概念不清晰和不直观的缺点。为了简化开关变换器的建模和分析，更直观、方便的分析开关变换器电路，有必要研究开关变换器的等效电路建模和分析方法(Boost time average model data, the state space average modeling and analysis method of switch converter has the shortcomings of complex calculation, unclear physical concept and non intuition. In order to simplify the modeling and analysis of the switch converter and analyze the switch converter more intuitively and conveniently, it is necessary to study the modeling and analysis method of the equivalent circuit of the switch converter.)