Multi-pad power/ground network design for uniform distribution of ground bounce
DAC '98 Proceedings of the 35th annual Design Automation Conference
Design of robust global power and ground networks
Proceedings of the 2001 international symposium on Physical design
Decoupling capacitance allocation for power supply noise suppression
Proceedings of the 2001 international symposium on Physical design
An algorithm for optimal decoupling capacitor sizing and placement for standard cell layouts
Proceedings of the 2002 international symposium on Physical design
Fast analysis and optimization of power/ground networks
Proceedings of the 2000 IEEE/ACM international conference on Computer-aided design
Area minimization of power distribution network using efficient nonlinear programming techniques
Proceedings of the 2001 IEEE/ACM international conference on Computer-aided design
Challenges in power-ground integrity
Proceedings of the 2001 IEEE/ACM international conference on Computer-aided design
On-chip power supply network optimization using multigrid-based technique
Proceedings of the 40th annual Design Automation Conference
ISQED '02 Proceedings of the 3rd International Symposium on Quality Electronic Design
A fast decoupling capacitor budgeting algorithm for robust on-chip power delivery
Proceedings of the 2004 Asia and South Pacific Design Automation Conference
VLSI on-chip power/ground network optimization considering decap leakage currents
Proceedings of the 2005 Asia and South Pacific Design Automation Conference
IBM POWER6 microprocessor physical design and design methodology
IBM Journal of Research and Development
Electronic Circuit & System Simulation Methods (SRE)
Electronic Circuit & System Simulation Methods (SRE)
IEEE Transactions on Computer-Aided Design of Integrated Circuits and Systems
Congestion-aware topology optimization of structured power/ground networks
IEEE Transactions on Computer-Aided Design of Integrated Circuits and Systems
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The usage of via stack was not carefully studied in previous multi-layered P/G (Power/Ground) network designs. However, with feature size scaling down, the resistance of via is increasing quickly and their influence on voltage drop of P/G networks has become obvious. In this paper, two optimization techniques for via placement are proposed, which are proved to be helpful in reducing on die voltage drop. Firstly, an efficient heuristic algorithm based on sensitivity analysis is presented to optimize via distribution in early design stage. Compared with even distribution design strategies, averagely the heuristic algorithm can reduce the worst voltage drop by 8.43% without adding more vias. Secondly, experiments demonstrated that using stacked vias in nonadjacent layers is powerful in eliminating ''hot'' areas which suffer from large voltage drop. Based on this observation, a heuristic algorithm is developed to further reduce the worst voltage drop. Experiments show that voltage drop distribution can be well optimized by combining these two strategies together.