混合平面和传输线pdn去耦电容的有效全局评估方法

IF 1.8 Q3 ENGINEERING, ELECTRICAL & ELECTRONIC
Ihsan Erdin;Ramachandra Achar
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引用次数: 0

摘要

提出了一种全局分析方法来计算解耦电容在实际输电网络中的有效性。该方法基于将PDN分离为其输电线路(PTL)和非PTL部分。PTL部分由对指定电源引脚阻抗影响最大的电路元件组成,包括引脚本身、最近的电容器和电容器两侧的PTL段。PDN的其余部分构成非ptl部分,它可以由平面形状、ptl或两者的混合组成。非ptl部分的特征是分布式电路,最好使用电磁(EM)模拟器。电容的有效性是通过引脚的自阻抗来衡量的,其自阻抗取决于引脚之间的距离。引脚阻抗在包括非引脚部分的阻抗在内的PTL部分的超越方程中进行计算。采用迭代法计算电容器的最佳位置。该方法避免了在迭代的每一步使用电磁模拟,大大加快了计算速度。该方法在实际设计案例中得到了验证。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
An Effective Global Approach for Assessment of Decoupling Capacitors on Mixed Planar and Transmission Line PDNs
A global analysis technique is proposed to calculate the effectiveness of decoupling capacitors on practical power delivery networks (PDN). The proposed method is based on separation of a PDN into its power transmission lines (PTL) and non-PTL sections. The PTL section consists of circuit components with the highest impact on the impedance of the specified power pin, including the pin itself, the nearest capacitor and segments of PTL on both sides of the capacitor. The rest of the PDN makes up the non-PTL section which could be composed of planar shapes, PTLs or a mixture of both. The non-PTL section is characterized as a distributed circuit, preferably using an electromagnetic (EM) simulator. The effectiveness of the capacitor is measured by the self-impedance of the pin which depends on the distance between them. The pin impedance is cast in a transcendental equation in the PTL section including the impedance of the non-PTL section. The optimal placement of the capacitor is calculated using an iterative approach. With the proposed method, the use of an EM simulation at each step of the iteration is eliminated, significantly speeding up the computation process. The proposed method is validated on real-life design cases.
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来源期刊
CiteScore
4.30
自引率
0.00%
发文量
27
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