Loop compensation system based on zero-pole tracking mechanism

Abstract

The invention discloses a loop compensation system based on a zero-pole tracking mechanism, comprising a linear voltage adjustment circuit, an amplifying circuit and an adaptive resistor-capacitor circuit, one end of the linear voltage adjustment circuit is connected with the amplifying circuit, and the other end of the linear voltage adjustment circuit is connected with the adaptive resistor-capacitor circuit; an input current, connected from the linear voltage adjustment circuit, of the amplifying circuit is a first input current, and an input current, connected from the linear voltage adjustment circuit, of the amplifying circuit is a second input current; and the adaptive resistor-capacitor circuit regulates a ratio of the first input circuit to the second input circuit according to adjustment parameters input by virtue of the linear voltage adjustment circuit, so as to realize zero-pole tracking compensation.

Description

technical field [0001] The invention relates to the technical field of semiconductor integrated circuits, in particular to a full-load loop compensation system. Background technique [0002] With the rapid development of smart portable electronic devices, technology has higher and higher requirements for power management, which enables power supply chips to maintain efficient and stable operation in a multi-technical and complex environment. As for the DC-DC converter, because of its advantages such as high conversion efficiency and strong load capacity, it is the most widely used in power management ICs. In particular, BOOST converters are indispensable in power management solutions because of their special boost characteristics. indispensable position. However, the disadvantage of the BOOST converter is that there is a left-half plane zero point in its voltage loop, which brings challenges to the loop compensation of the technology. [0003] The prior art proposes some t...

AI Technical Summary

Problems solved by technology

However, the disadvantage of the BOOST converter is that there is a left-half plane zero point in its voltage loop, which brings challenges to the loop compensation of the technology.

For example, a new type of three-state topology, which can completely eliminate the existence of the left zero point, but the additional power switch tube brings about a waste of area and an increase in loss; in addition, the existing technology uses low-frequency control technology, Adaptive voltage positioning technology and output voltage leading edge modulation method to reduce the adverse effects caused by the left zero point, but these methods either lead to excessive output ripple or difficult to control the working sequence, which brings a certain degree of difficulty to the design

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