Proceedings of the 37th Annual Design Automation Conference
Efficient large-scale power grid analysis based on preconditioned krylov-subspace iterative methods
Proceedings of the 38th annual Design Automation Conference
Simulation and optimization of the power distribution network in VLSI circuits
Proceedings of the 2000 IEEE/ACM international conference on Computer-aided design
Deterministic Clock Gating for Microprocessor Power Reduction
HPCA '03 Proceedings of the 9th International Symposium on High-Performance Computer Architecture
Proceedings of the conference on Design, Automation and Test in Europe - Volume 2
Partitioning-based approach to fast on-chip decap budgeting and minimization
Proceedings of the 42nd annual Design Automation Conference
Efficient early stage resonance estimation techniques for C4 package
ASP-DAC '06 Proceedings of the 2006 Asia and South Pacific Design Automation Conference
Power Distribution Networks with On-Chip Decoupling Capacitors
Power Distribution Networks with On-Chip Decoupling Capacitors
Analysis and optimization of structured power/ground networks
IEEE Transactions on Computer-Aided Design of Integrated Circuits and Systems
More realistic power grid verification based on hierarchical current and power constraints
Proceedings of the 2011 international symposium on Physical design
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In this paper, an efficient framework is proposed to analyze the worst case of voltage variation of power network considering multidomain clock gating. First, a frequency-domain-based simulation method is proposed to obtain the time-domain voltage response. With the vector fitting technique, the frequency-domain responses are approximated by a partial fraction expression, which can be easily converted to a time-domain waveform. Then, an algorithm is proposed to find the worst-case voltage variation and corresponding clock gating patterns, through superimposing the voltage responses caused by all domains working separately. The major computation of the whole framework is solving the frequency-domain equation system, whose complexity is about O(NαD log fmax), where α is between one and two if using an iterative solver from the PETSc library. N is the node number, fmax is the upper bound of frequency, and D is the number of clock domains. Numerical results show that the proposed simulation method is up to several hundred times faster than commercial fast simulators, like HSPICE and MSPICE. In addition, the proposed method is able to analyze large-scale power networks that the commercial tools are not able to afford.