Boost电路寄生参数影响分析与验证

摘要

理想DC/DC变换器建模因忽略寄生参数影响,仿真结果与实际电路存在较大偏差.主要讨论在电感和电容高频寄生电阻条件下,基于电路平均法建立非理想Boost变换器小信号数学模型.对于寄生参数的存在给系统性能带来的影响进行了理论分析和实际验证,理论分析与实验结果对优化变换器性能提供参考.%The simulation and the actual result have some deviations,because of ignoring the parasitic parameters in ideal DC/DC converter modeling.A small signal mathematical model of non ideal Boost converter is established based on parasitic resistance of inductor and capacitor.The influence of parasitic parameters on the performance of the system is analyzed theoretically and verified in practical,and the theoretical analysis and experimental results that provides the reference for optimizing the performance of the converter.