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Total Power Modeling in FPGAs Under Spatial Correlation

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3 Author(s)
Hassan A. Hassan ; Electr. & Comput. Eng. Dept., Univ. of Waterloo, Waterloo, ON ; Mohab Anis ; Mohamed Elmasry

This work describes a novel approach for total power estimation in field-programmable gate arrays (FPGAs) while considering spatial correlation among the different signals in the design. The signal probabilities under spatial correlations are used to properly model the dynamic power dissipation and the state-dependency of the leakage power dissipation in the logic and routing resources of FPGAs. Moreover, the proposed model accounts for power due to glitches. The accuracy of the developed power estimation technique is compared with that of HSpice simulations and other FPGA power estimation techniques that assume spatial independence. It is found that the spatial independence assumption can overestimate power dissipation in FPGAs by an average of 19%.

Published in:

IEEE Transactions on Very Large Scale Integration (VLSI) Systems  (Volume:17 ,  Issue: 4 )