在Multisim中创建电压型PWM芯片的模型  

Creating Voltage-mode Controller Model Based on Multisim

作　　者：杨天奇[1] 陈永生[1] 霍勇[1] 

机构地区：[1]同济大学电子与信息学院,上海200331

出　　处：《机电一体化》2011年第1期43-47,共5页Mechatronics

基　　金：国家科技部攻关项目(项目编号:0800240012)

摘　　要：Multisim是以Windows为基础的仿真软件,可以对多种开关电源进行仿真;但是软件内建的电压模式PWM模型数量却远远不能满足实际应用中的需求。通过采用Multisim 11.0元器件库中现有的基本元件模型,构建了电压模式PWM芯片内部的各主要部分功能模型,并通过相应的波形图验证了模型的正确性。在此基础之上完成了电压模式PWM芯片UCC2570的仿真模型的建立,实现了其主要功能。模型的建立方法同样适用于其他电压模式PWM芯片,拓宽了软件的应用,为后续的开关电源设计和仿真提供便利。Muhisim is an excellent computer simulation software based on Windows for switch-mode power supply. However, the number of it＇s build in voltage-mode PWM model is short of practical demand. This article describes a method to build a voltage-mode PWM chip＇s internal model of the various functional parts by using of existing components in Multisim 11.0 library and the correctness of the mode is verified by the giving waveforms of various parts of the model. On which basis, UCC2570 simulation model is built and realized, and this creating method also can be used for other voltage-mode PWM model building. Thus the application of the software is widened and convenient to the following design and simulation.

关 键 词：MULTISIM UCC2570 仿真 模型 

分 类 号：TN86[电子电信—信息与通信工程]