基于MSP430大功率高效数控恒流源

Constant-current source based on MSP430 high-power efficient numerical control

MSP430和LM2596DC-DC变换器构成高效数控恒流源闭环控制网络,利用单片机自带16位A/D转换、12位D/A转换模块调整LM2596DC-DC转换器4脚电压,控制DC-DC转换器输出200mA-2000mA恒定直流电流,恒流源效率可达90%以上,高线性调整率和负载调整率,通过键盘调整输出电流,LCD实时显示电流大小,精度高、响应快,电路十分理想.

MSP430 and LM2596DC-DC converter constitute efficient numerical control constant-current source closed-loop control network.Using single chip computer bringing 16 A/D conversion,12 D/A conversion module adjustment LM2596DC-DC converter 4 feet,control DC voltage DC converter output 200mA-2000mA constant DC current,constant current source efficiency can reach 90%.The circuit is ideal：high linear adjusting rate and the load adjusting rate,output current adjusted by keyboard,LCD real-time display of current size,precision,fast response.