基于小信号模型的同步Buck电路数字化研究  

Research on digitalization of synchronous Buck circuit based on small signal model

作　　者：马骏杰[1] 王钦钰[1] 尹艳浩 张媛媛 郎一凡 葛新 

机构地区：[1]哈尔滨理工大学荣成学院,山东威海264300

出　　处：《实验技术与管理》2018年第2期45-49,共5页Experimental Technology and Management

基　　金：国家自然科学基金项目(51177031);山东省高等学校科技计划项目(J17KB136);哈尔滨理工大学教育教学研究项目(220160012);黑龙江省大学生创新创业训练计划项目(201710214018)

摘　　要：提出了以DSP为核心的高频数字电源的设计方案,使用TI公司Piccolo系列TMS320F28027的MCU作为数字控制器,建立了Buck小信号模型下的控制环路,讨论了电压模式和电流模式下Buck闭环控制器设计。为提高系统的开关频率,利用HRPWM(高分辨率PWM)单元实现开关频率为300kHz下的系统设计。通过仿真和实验研究表明,该控制器设计在满足数学理论的基础上具有很强的应用价值。The design scheme of the high frequency digital power supply with DSP as the core is put forward.The control loop of the Buck small signal model is established by using MCU of Piccolo series TMS320 F28027 by TI company as the digital controller,and the design of the Buck closed loop controller in the voltage mode and current mode is discussed.In order to improve the switching frequency of the system,HRPWM（high resolution PWM）unit is used to realize the system design under the switching frequency of 300 kHz.Through the simulation experiment,the research shows that the design of the controller is of great application value on the basis of satisfying the mathematical theory.

关 键 词：Buck小信号模型 电压(电流)模式闭环控制器 高分辨率PWM 

分 类 号：TM46[电气工程—电器]