基于Saber的DC/DC开关电源闭环反馈设计与仿真  

The Design and Simulation of Close Loop Feedback of DC/DC Switching Power Supply Based Saber

作　　者：毛景魁[1] 张开拓[1] 李孟晓[2] 

机构地区：[1]河南机电高等专科学校,河南新乡453000 [2]上海海事大学,上海201306

出　　处：《河南机电高等专科学校学报》2012年第3期21-25,共5页Journal of Henan Mechanical and Electrical Engineering College

摘　　要：使用Saber软件对DC/DC开关电源进行开环仿真,输入电压波动时,输出纹波电压较大,不能满足设计要求。对系统进行小信号分析后,根据系统伯德图分析系统传递函数的结构形式,进行闭环反馈网络的设计。将闭环反馈网络加入系统进行仿真,结果表明:闭环反馈网络不仅使得输出电压迅速上升,而且减小了输出电压的纹波系数,提高了输出电压的稳定性。When input voltage fluctuates in open -loop simulation of DC/DC switching power supply w,m Saber software, the tipple of output voltage is large, so it can not meet design requirement. After small signal analysis of system, according to the Bode diagram of system, transfer function structure is deduced, and closed loop feedback network is designed. The closed loop feedback network is then added into system to simulate. The result shows that closed loop feedback network not only makes output voltage rise quickly, but also reduce ripple coefficient of output voltage, improves stability of output voltage.

关 键 词：开关电源 SABER 闭环反馈补偿 仿真 传递函数 

分 类 号：TP319[自动化与计算机技术—计算机软件与理论]