论文标题
米勒补偿器放大器的两端口反馈分析
Two-Port Feedback Analysis On Miller-Compensated Amplifiers
论文作者
论文摘要
在本文中，通过使用两个端口反馈分析以及根部 - 洛克斯图，分析了各种米勒补偿的放大器。所提出的分析解决了无法预测杆裂的米勒定理/近似问题，并且需要一个不切实际的假设，即在将米勒电容器连接到两个阶段放大器中的初始较低频率极应与放大器的输入相关。由于提出的分析阐明了闭环极是如何源自S平面中的开环极线的，因此它允许将闭环电线杆与电路组件建立关联，从而为频率补偿提供了设计见解。分析的电路是带有和没有电流缓冲液和三阶段嵌套米勒补偿器的两阶段磨坊补偿放大器。
In this paper, various Miller-compensated amplifiers are analyzed by using the two-port feedback analysis together with the root-locus diagram. The proposed analysis solves problems of Miller theorem/approximation that fail to predict a pole-splitting and that require an impractical assumption that an initial lower frequency pole before connecting a Miller capacitor in a two-stage amplifier should be associated with the input of the amplifier. Since the proposed analysis sheds light on how the closed-loop poles originate from the open-loop poles in the s-plane, it allows the association of the closed-loop poles with the circuit components and thus provides a design insight for frequency compensation. The circuits analyzed are two-stage Miller-compensated amplifiers with and without a current buffer and a three-stage nested Miller-compensated amplifier.
