基于ATmega8的程控电流驱动器设计

以ATmega8单片机为程控接口的核心控制电流驱动器,实现了程控电流驱动器的设计方案。电流驱动器采用Buck变换器进行输入/输出功率变换,通过电压、电流双反馈调节的反馈环路控制PWM驱动电路使Buck变换器实现输出电压可调,程控接口根据设定值大小以高频PWM输出方式控制电流驱动器输出相应的电流。进行了性能测试实验,结果表明：程控电流驱动器输出可靠性高,响应时间快,满足设计要求。

Design of Programmable Control Electric Current Drive Based on ATmega8

This paper provides the design project of programmable control electric current drive based on programmable control interface which utilizes ATmega8 as core to control the current drive.The electric current drive adopts Buck converter to achieve input/output power conversion.The feedback loop uses voltage and current double feedback adjustment to control PWM drive circuit,so that the output of Buck converter could be adjusted.According to set value,the programmable control interface controls the current drive to output the matching value in the form of high frequency PWM output.The performance experiments are carried out,and the result shows that the output of programmable control electric current drive has much higher reliability and faster responding,satisfying the design demand.