单 位：
昆明理工大学电力工程学院;昆明理工大学信息工程及其自动化学院
关键词：
DC/DC变换器;PWM;TL494;单片机
摘 要：
针对目前电源供电模块受功率大小影响的不足,提出了解决方案。设计出一种由三路DC/DC变换器并联组成的输出电流任意比例分配的电源供电模块。整个系统由DC/DC变换器、采样电路、控制电路、按键显示电路等模块组成。开关电源三路主回路都输入12 V DC,通过升压斩波电路,变换为20~30 V DC输出;主控制器为STC12C516S2单片机。主控制器和TL494以双闭环形式控制DC/DC变换电路,既能通过电压反馈控制稳定输出电压,又能通过电流反馈对输出电流任意分配比例控制。且该系统还有过流保护功能。
译 名：
Multiple Power Arbitrary Current Distribution Control System
作 者：
MU Runzhi;LI Heng;LU Cheng;College of Electrical Engineering,Kunming University of Science and Technology;College of Information Engineering and Automation,Kunming University of Science and Technology;
关键词：
DC /DC converter;;PWM;;TL494;;SCM
摘 要：
In view of the present power supply module size affect by the power of the shortages,this paper puts forward a kind of very good solution. A kind of the three ways DC / DC converter parallel composition of output current arbitrary proportion distribution of power supply module was designed. The whole system consisted of DC / DC converter,sampling circuit,control circuit,key display circuit modules. Switching power supply three ways main circuit were input 12 V DC,through the booster chopper circuit,transformation of 20 ~ 30 V DC output. The main controller was STC12C516S2 singlechip microcomputer. The main controller and TL494 to double closed loop control in the form of DC / DC conversion circuit,can use the voltage feedback control stable output voltage,but also use the current feedback to output current arbitrary allocation proportion control. And this system also has the over-current protection function.
