基于DSP降压型DC-DC变换器的设计与实现

Design and Implementation of Step-down DC-DC Converter Based on DSP

通过对基本buck变换器的设计,采用基于TI公司的DSP芯片TMS320F808实现闭环反馈回路控制。输入电压范围为10V～20V,输出电压为5V,最大输出电流为2A。根据数字电源的原理与特点,合理设计电路,并给出了外围器件参数的计算选取及部分器件计算制作方法。

In this paper, the design of the buck converter, based on TI＇ s DSP chip TMS320F2808 closed loop control feedback 1oop, input voltage 10V-20V,output voltage 5V, maximum output currentof 2A. The digital power suppli design basedon principles ＂and＂ characteristics, and the design circuit, and gives the calculation of selected parameters of peripheral devices and some devices calculating production methods.