基于DSP的直流斩波电源的设计

Design on DC chopper power based on DSP

介绍了一种基于DSPTMS320F2812为核心的降压(Buck)型直流斩波电源的设计。文中着重分析了直流斩波电源的硬件整体组成以及软件的设计。系统采用双闭环控制,检测变压器的原边电流作为系统内环调节,电流跟踪电压变化。斩波电源设计中采用数字P I D控制器,可以更好的实现电压、电流的控制。整个设计精简了外设,并且易于PID算法的实现,缩短了执行时间。

This paper describes the design of a based on DSPTMS320F2812 for core step-down （Buck） DC chopper power supply and analyzes the overall hardware composition of the DC chopper power supply and software. The system uses dual closed-loop control, and the transformer primary side current regulation, as the system inner current tracking a voltage change. Chopper power supply design, using a digital PID controller, can better achieve the control of the voltage and current. The entire design streamlines peripherals, and eases the implementation of the PID algorithm, and shorts the execution lime.