Joint simulation optimization method for on-chip power supply distribution network

Abstract

The invention discloses a joint simulation optimization method for an on-chip power supply distribution network. The joint simulation optimization method comprises the following steps of 1, initializing parameters; 2, forming an EBG structure with different zigzag edges, and forming a population; generating EBG model scripts of different optimization areas, generating models according to script files and simulating, and transmitting back the S parameters obtained through EBG model simulation of each individual in the population to a main program; 3, calculating the fitness value of each individual sensor model; 4, updating an individual optimal value; and 5, updating the optimal value of the population; 6, judging whether the number of iterations reaches the maximum number of iterations or not; if not, repeating the steps 2 to 5; if yes, outputting the optimized EBG structure, and ending optimization; 7, combining the obtained EBG structures, and modeling again to obtain an optimized PDN structure; and 8, ending the joint simulation. According to the method, the EBG structures with excellent performance and the PDN layout formed by the EBG structures can be efficiently, reliably and automatically obtained.

Description

technical field [0001] The invention belongs to the technical field of chip packaging, and in particular relates to a co-simulation optimization method of an on-chip power distribution network with better noise suppression performance. Background technique [0002] With the rapid development of integrated circuit technology and system-in-package technology, the computing speed of high-speed hybrid circuits continues to accelerate, and the information throughput continues to increase. The resulting signal integrity (Signal Integrity, SI) and power integrity (Power Integrity) , PI) and electromagnetic compatibility (Electromagnetic Compatibility, EMC) problems have become increasingly serious. Therefore, how to effectively suppress the noise propagation in the high-speed hybrid circuit system while ensuring the SI and PI performance of the system has become an urgent problem to be solved. In this scenario, the design of the on-chip power distribution network has also become an...

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Problems solved by technology

[0005] However, due to the discontinuity and non-differentiability of circuit design and optimization, the high complexity of contemporary large-scale circuit design and optimization will cost researchers a lot of time and energy. Therefore, it is necessary to provide a more efficient parameter design and structural optimization. method to solve the current problem of heavy and time-consuming electromagnetic design optimization process. On the other hand, this method will be of great significance to promote the wider application of EBG structures in electromagnetic problems.

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