Modeling apparatus and method for capacitor equivalent model

Abstract

The disclosed modeling method for equivalent capacitor model comprises: selecting equivalent parameter and desired condition for impedance calculation and decision respectively, which can avoid defect by simple calculation method. This invention can meet different simulation precision request, fit to variable capacitors, and benefit to simulation result analysis.

Description

technical field [0001] The invention relates to the technical field of network communication, in particular to a modeling device and method for an equivalent capacitance model. Background technique [0002] As the operating speed of electronic equipment continues to increase, the operating voltage of the internal chip gradually decreases, and the operating current gradually increases. Changes in voltage and current will cause transient voltage fluctuations, which may cause chip work errors. To solve this problem, the most common method is to use capacitors. To use capacitors correctly, you must have a full understanding of the characteristics of capacitors. [0003] The characteristics of capacitors in practical applications are: they are capacitive at low frequencies, inductive at high frequencies, and resonate at the junction of the capacitive and inductive regions. Due to this characteristic of the capacitor, usually the capacitor company will give the equivalent RLC se...

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Problems solved by technology

[0010] The above modeling method is only for ceramic capacitors, and this modeling model cannot be used for other capacitors with different physical structures from ceramic capacitors, which makes the scope of application of this modeling method very limited

In the above modeling method, each equivalent parameter is obtained through simple four operations, that is, through an analytical method, which affects the accuracy of the equivalent parameters, so that the impedance curve of the modeling model and the actual impedance curve of the ceramic capacitor are still consistent. A certain difference cannot be well matched with the actual impedance curve of the ceramic capacitor, so that the equivalent model of the ceramic capacitor cannot accurately reflect the impedance characteristics of the ceramic capacitor, so that the accuracy of the equivalent model of the ceramic capacitor is lacking, which eventually leads to The accuracy of the simulation analysis results is poor

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