多路通信电源欠压锁定电路数字控制方法研究  

Research on Digital Control Method for Under-voltage Locking Circuit of Multi-channel Communication Power Supply

作　　者：田云霞 张青云[2] 林海霞[1] TIAN Yunxia;ZHANG Qingyun;LIN Haixia(School of Information Technology,Hebei Polytechnic Institute,Shijiazhuang 050091,China;Academic Affairs Office,Shijiazhuang Vocational College of Technology&Information,Shijiazhuang 050091,China)

机构地区：[1]河北工程技术学院信息技术学院,石家庄050091 [2]石家庄科技信息职业学院教务处,石家庄050091

出　　处：《电源学报》2021年第3期147-152,共6页Journal of Power Supply

基　　金：河北省自然科学基金资助项目(F200900030)。

摘　　要：传统多路通信电源欠压锁定电路存在结构复杂、响应速度差等缺陷。为精准控制多路通信电源欠压锁定电路,需设计一种新型多路通信电源欠压锁定电路,并采用数字控制方法控制多路通信电源欠压锁定电路。采用电流模控制技术,通过随电源电压呈现二次方曲线变化的自偏置电流调节新型多路通信电源欠压锁定电路上、下阈值门限电压,控制迟滞电压,改善电路响应速度;同时通过温度补偿方式降低新型电路基准电压温度敏感系数,使迟滞电压温度灵敏度较低,迟滞电压具有较高的稳定性和较小的漂移程度。经过实验分析发现,该方法控制下的多路通信电源欠压锁定电路电源电压在1.65 V/μs时,输出电压上升和下降时间是36 ns,控制电路能量消耗平均值为51.684μW,电路响应速度较快,能耗低。The under-voltage locking circuit of a traditional multi-channel communication power supply has shortcomings such as complex structure and low response speed.In order to accurately control this type of circuit,a novel circuit should be designed,which is controlled by the digital control method.In this paper,the current mode control technology is adopted to adjust the upper and lower threshold voltages of the novel under-voltage locking circuit of the multi-channel communication power supply,control the hysteresis voltage,and improve the response speed of the circuit through the self-bias current which changes with the power supply voltage in a manner of a quadratic curve.At the same time,the temperature sensitivity coefficient of the reference voltage of the novel circuit is reduced by means of temperature compensation,so that the temperature sensitivity of the hysteresis voltage is lower,and the hysteresis voltage has a higher stability and a smaller drift degree.Through the analysis of experimental results,it was found that when the power supply voltage of the under-voltage locking circuit was 1.65 V/μs,the output voltage rose and fell for 36 ns,and the average energy consumption by the control circuit was 51.684μW,indicating the fast response speed and low energy consumption of the circuit.

关 键 词：多路通信 电源 欠压锁定 数字控制 迟滞电压 基准电压 

分 类 号：TM72[电气工程—电力系统及自动化]