物联网技术
物聯網技術
물련망기술
INTERNET OF THINGS TECHNOLOGIES
2013年
8期
64-66,69
,共4页
BUCK%峰值电流模式%PWM%建模
BUCK%峰值電流模式%PWM%建模
BUCK%봉치전류모식%PWM%건모
BUCK%peak current mode%PWM%modeling
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。
基于傳統峰值電流模式的控製結構，提齣瞭一種新型的峰值電流模式同步整流BUCK變換器的控製結構。在輸齣迴路串入檢測電阻形成電壓採樣電路，併將採樣電壓直接輸入到PWM電流比較器，使得電路結構更加簡單，反應速度更快。文中利用經典控製理論方法對控製電路進行瞭繫統建模與分析，併通過Matlab倣真驗證瞭本方案的可行性。
기우전통봉치전류모식적공제결구，제출료일충신형적봉치전류모식동보정류BUCK변환기적공제결구。재수출회로천입검측전조형성전압채양전로，병장채양전압직접수입도PWM전류비교기，사득전로결구경가간단，반응속도경쾌。문중이용경전공제이론방법대공제전로진행료계통건모여분석，병통과Matlab방진험증료본방안적가행성。
Based on the control structure of traditional peak current mode, a new type of peak current mode synchronous rectiifcation 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.
