Efficient Sensitivity Calculations for Optimization of Power Delivery Network Impedance
Efficient Sensitivity Calculations for Optimization of Power Delivery Network Impedance
复制标题
用于优化供电网络阻抗的高效灵敏度计算
DOI：
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发表时间：
2010
期刊：
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通讯作者：
A. Engin
中科院分区：
文献类型：
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作者：
A. Engin
提出了一种计算输电网络阻抗灵敏度的有效算法。灵敏度算法基于伴随系统方法。有效的灵敏度计算是复杂PDN优化设计的关键。PDN的频域设计是一个多目标优化问题，本文将其描述为一个极大极小问题。设计变量通常是去耦合电容器(十进制)。目标函数是在相关频率下计算的PDN的输入阻抗。本文还提出了一种计算大变化灵敏度的有效算法。基于这种方法，可以有效地模拟假设场景，例如添加、修改或重新定位几个十进制数或几何图形的微小变化。
This paper presents efficient algorithms for sensitivity calculations of power delivery network (PDN) impedance. The sensitivity algorithm is based on the adjoint system method. Efficient calculation of sensitivity is critical for optimization of complex PDNs. The frequency-domain design of a PDN is a multiobjective optimization problem, which is formulated as a minimax problem in this paper. The design variables are typically the decoupling capacitors (decaps). The objective function is the input impedance of the PDN calculated at relevant frequencies. This paper also presents an efficient algorithm for large-change sensitivity calculations. Based on this method, what-if scenarios can be simulated efficiently, such as the addition, modification, or relocation of a few decaps or a small change in the geometry.