摘要
基于传统峰值电流模式的控制结构,提出了一种新型的峰值电流模式同步整流BUCK变换器的控制结构。在输出回路串入检测电阻形成电压采样电路,并将采样电压直接输入到PWM电流比较器,使得电路结构更加简单,反应速度更快。文中利用经典控制理论方法对控制电路进行了系统建模与分析,并通过Matlab仿真验证了本方案的可行性。
Based on the control structure of traditional peak current mode, a new type of peak current mode synchronous rectification BUCK converter control structure is proposed. Voltage sampling circuit is formed by adding a sense resistor into the output circuit, and the sampling voltage is input to the PWM current comparator, which makes the circuit structure simpler, and the response speed faster. With the classical control theory method, the control circuit for the system is modeled and analyzed. Finally, this design is proved to be feasibility through Matlab simulation.
出处
《物联网技术》
2013年第8期64-66,69,共4页
Internet of things technologies
