用matlab对Buck电路进行了仿真,简单直接可用，BUCK电路就是一种DC-DC转换器，简单的讲就是通过震荡电路将一直流电压转变为一高频电源，然后通过脉冲变压器、整流滤波回路输出需要的直流电压，类似于开关电源(The BUCK circuit is a kind of DC-DC converter, which is simply to convert a DC voltage to a high frequency power supply through a concussion circuit, and then output the required DC voltage through a pulse transformer and a rectifier filter circuit, similar to a switching power supply.)