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Compensation method and device for Buck circuit, and Buck circuit

A circuit and resonance technology, applied in the Buck circuit field, can solve problems such as the inability to obtain the compensation transfer function, and achieve the effect of saving manpower and fast transient response

Active Publication Date: 2020-09-15
SOUTHEAST UNIV +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] Based on this, it is necessary to provide a compensation method, device and Buck circuit for the problem that manual calculation can not be used to obtain the optimal compensation transfer function.

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  • Compensation method and device for Buck circuit, and Buck circuit
  • Compensation method and device for Buck circuit, and Buck circuit
  • Compensation method and device for Buck circuit, and Buck circuit

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Embodiment Construction

[0034] In order to make the above-mentioned purpose, features and advantages of the present invention more obvious and understandable, the specific embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. However, the present invention can be implemented in many other ways different from those described here, and those skilled in the art can make similar improvements without departing from the connotation of the present invention, so the present invention is not limited by the specific implementation disclosed below.

[0035] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the technical field of the invention. The terminology used herein in the description of the present invention i...

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Abstract

The invention relates to a compensation method and device for a Buck circuit, and the Buck circuit. The device comprises: a power transfer function acquisition module for acquiring a first resonance pole and a second resonance pole of a power transfer function; a compensation transfer function acquisition module for acquiring a compensation transfer function, wherein the compensation transfer function comprises a low-frequency gain, a first resonance zero point and a second resonance zero point; a range determination module for determining the value ranges of the first resonance zero point andthe second resonance zero point; a first data screening module for acquiring m data sets meeting a preset phase margin from the value ranges of the first resonance zero point and the second resonancezero point and a preset target bandwidth range; an adjustment module for adjusting the low-frequency gain of the compensation transfer function according to all data of each data set to obtain m low-frequency gain adjustment values; and a second data screening module for acquiring the minimum value of the closed-loop output impedance of the system according to all the data of each data set and the corresponding low-frequency gain adjustment values, wherein the compensation transfer function corresponding to the minimum value is the optimal compensation transfer function, so that the optimal transient response can be achieved, and manual calculation is not needed.

Description

technical field [0001] The invention relates to the technical field of power supplies, in particular to a compensation method and device for a Buck circuit and a Buck circuit. Background technique [0002] There is a zero point and a pair of resonant poles in the power transfer function of the traditional Buck circuit. Due to the existence of the resonant pole, the entire system is unstable, so the pair of resonant poles needs to be compensated. The current compensation methods are all manual calculations, which offset the pair of resonance poles by compensating a pair of resonance zeros in the transfer function, so that the bandwidth is greatly increased and a faster transient response is obtained. However, the compensation transfer function obtained by manual calculation is not optimal, so it needs to be solved urgently. Contents of the invention [0003] Based on this, it is necessary to provide a compensation method, device and Buck circuit for the Buck circuit to sol...

Claims

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Application Information

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IPC IPC(8): H02M3/156
CPCH02M3/156Y02B70/10
Inventor 徐申于利民朱峰郭守誉张华鑫孙伟锋时龙兴
Owner SOUTHEAST UNIV
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