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Method and device for determining magnetic core loss for integrated circuit current cut-off distortion

A core loss, integrated circuit technology, applied in the field of core loss determination, to achieve the effect of convenient and accurate core loss

Active Publication Date: 2022-05-10
北京智芯仿真科技有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The present application provides a magnetic core loss determination method and device for integrated circuit current cut-off distortion, in order to solve or partially solve the above-mentioned problems involved in the background technology or at least one other deficiency in the prior art

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  • Method and device for determining magnetic core loss for integrated circuit current cut-off distortion
  • Method and device for determining magnetic core loss for integrated circuit current cut-off distortion
  • Method and device for determining magnetic core loss for integrated circuit current cut-off distortion

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Embodiment Construction

[0032] For a better understanding of the application, various aspects of the application will be described in more detail with reference to the accompanying drawings. It should be understood that these detailed descriptions are descriptions of exemplary embodiments of the application only, and are not intended to limit the scope of the application in any way. Throughout the specification, the same reference numerals refer to the same elements. The expression "and / or" includes any and all combinations of one or more of the associated listed items.

[0033] In the drawings, the size, dimensions, and shapes of elements have been slightly adjusted for illustrative purposes. The drawings are examples only and are not strictly drawn to scale. As used herein, the words "approximately," "approximately," and similar words are used as words of approximation, not of degree, and are intended to describe measurements that would be recognized by those of ordinary skill in the art. Or inh...

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Abstract

A magnetic core loss determination method and device for integrated circuit current cut-off distortion may include: applying a current with a cut-off distortion waveform to a magnetic core of an inductance element used in an integrated circuit power supply system, wherein the current changes periodically. Under the action of current, multiple characteristic points of the hysteresis loop of the magnetic core are collected, wherein the hysteresis loop represents the relationship between the magnetic field intensity acting on the magnetic core and the magnetic induction intensity generated by the magnetic core. According to a plurality of characteristic points, the parameters for fitting the S-curve of the hysteresis loop are determined to obtain the equation of the hysteresis loop. According to the equation of the hysteresis loop, and based on the definition of core loss, the hysteresis loop is integrated to determine the average power loss of the core. The present application avoids the problem in the prior art that it is difficult to accurately obtain the magnetic core loss under the condition of DC bias, and provides a convenient and accurate method for determining the magnetic core loss of the inductance element.

Description

technical field [0001] The present application relates to the technical field of integrated circuits, in particular to a method and device for determining magnetic core loss for integrated circuit current cut-off distortion. Background technique [0002] The magnetic core loss of the inductance element of the system-level integrated circuit power system has nonlinear characteristics, so that the calculation process is more difficult, and of course it is difficult to obtain a more accurate magnetic core loss value. Traditionally, the Steinmetz formula is used to estimate the core loss of an inductive component, namely in is the average power loss per unit time under the unit volume of the magnetic core, k, α and β are coefficients related to the magnetic core material, f is the transformer operating frequency under sinusoidal excitation, B max It is the maximum magnetic flux density of the transformer core under sinusoidal excitation. However, the Steinmetz formula is on...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01R27/26
CPCG01R27/2694
Inventor 王芬
Owner 北京智芯仿真科技有限公司