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首页> 外文期刊>IEEE Journal of Solid-State Circuits >Active capacitor multiplier in Miller-compensated circuits
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Active capacitor multiplier in Miller-compensated circuits

机译：米勒补偿电路中的有源电容器倍增器

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摘要

A technique is presented whereby the compensating capacitor of an internally compensated linear regulator, Miller-compensated two-stage amplifier, is effectively multiplied. Increasing the capacitance with a current-mode multiplier allows the circuit to occupy less silicon area and to more effectively drive capacitive loads. Reducing physical area requirements while producing the same or perhaps better performance is especially useful in complex systems where most, if not all, functions are integrated onto a single integrated circuit. Die area in such systems is a luxury. The increasing demand for mobile battery-operated devices is a driving force toward higher integration. The enhanced Miller-compensation technique developed in this paper helps enable higher integration while being readily applicable to any process technology, be it CMOS, bipolar, or BiCMOS. Furthermore, the technique applies, in general, to amplifier circuits in feedback configuration. Experimentally, the integrated linear regulator (fabricated in a 1-/spl mu/m BiCMOS process technology) proved to be stable for a wide variety of loading conditions: load currents of up to 200 mA, equivalent series resistance of up to 3 /spl Omega/, and load capacitors ranging from 1.5 nF to 20 /spl mu/E The total quiescent current flowing through the regulator was less than 30 /spl mu/A during zero load-current conditions.
机译：提出了一种有效地倍增内部补偿线性稳压器的补偿电容器，米勒补偿的两级放大器的技术。使用电流模式倍增器增加电容可以使电路占用更少的硅面积，并更有效地驱动电容负载。在产生大多数功能（如果不是全部的话）集成到单个集成电路的复杂系统中，减少物理面积要求同时产生相同或更好的性能尤其有用。这种系统中的模具面积是一种奢侈。对移动电池供电设备的需求不断增长，是朝着更高集成度发展的驱动力。本文开发的增强型米勒补偿技术有助于实现更高的集成度，同时易于适用于任何工艺技术，例如CMOS，双极性或BiCMOS。此外，该技术通常应用于具有反馈配置的放大器电路。实验证明，集成的线性稳压器（以1- / spl mu / m BiCMOS工艺技术制造）在各种负载条件下均稳定：负载电流高达200 mA，等效串联电阻高达3 / spl Omega /和负载电容器，范围为1.5 nF至20 / spl mu / E在零负载电流条件下，流经稳压器的总静态电流小于30 / spl mu / A。

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