这是一个Matlab实现的PWM型直流变换器的Simulink仿真，变换方式是Buck-Boost变换方式。示例，提供了一个从5伏到25伏电压，的升压变换。-This is a Matlab Simulink simulation of PWM DC-DC converter, and transform the way Buck-Boost transform. Example, from 5 volts to 25 volts, the boost transformation.