基于Buck变换器的扩流电路的研究

Study on Diffuser Circuit Based on Buck Converter

提出一种可提高占空比的Buck变换器拓扑结构,相较于传统Buck变换器,该拓扑结构通过改变导通、关断时的电感量,从而改变电路的占空比,提升输出电流。使用Power Simulation软件进行仿真分析的同时,测试一台实验样机。理论分析、仿真验证和实验结果一致,表明该变换器可通过改变占空比来提升输出电流。

A buck converter topology with high duty cycle is proposed in this paper.Compared with the traditional Buck converter,this topology can change the duty cycle of the circuit and increase the output current by changing the inductance during on and off.While using the Power Simulation software for simulation analysis,an experimental prototype is tested.The theoretical analysis,simulation and experimental results are consistent,which shows that the converter can improve the output current by changing the duty cycle.