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主要论述了基于dsPIC30f4013的高精度数控直流电源的设计原理及实现方法。该稳压电源以开关稳压芯片LM2596为基础,把开关直流稳压电源的高效率性和嵌入式系统的高精度数据采集处理能力相结合,用I~2C总线的数字电位器MAX5478实现输出电压的微步进调节。设计的开关电源具有输出电流保护功能、LCD1602实时显示电压电流、矩阵键盘人机交互功能。软件采用MAPLAB编译,整个系统经过测试运行稳定。
Mainly discusses the dsPIC30f4013-based high-precision digital DC power supply design principles and implementation methods. The power supply to the switching regulator LM2596-based, the switching DC power supply high efficiency and embedded systems, high-precision data acquisition and processing capabilities combined with I ~ 2C bus digital potentiometer MAX5478 output voltage Micro-step adjustment. Design of the switching power supply with output current protection, LCD1602 real-time display of voltage and current, matrix keyboard interactive functions. Software using MAPLAB compiler, the entire system has been tested and stable operation.