An efficient IP-level power model for complex digital circuits

In this paper, we propose an efficient IP-level power model with a small lookup table for complex CMOS circuits. The table has only one dimension that maps the zero-delay charging and discharging capacitance into the real power consumption of pattern pairs but still has high accuracy. In order to improve the efficiency of the characterization process, the Monte Carlo approach is used during the estimation of the average power, to skip the samples that will not increase the accuracy too much. The experimental result shows the table sizes are only up to 107 entries for ISCAS'85 benchmark circuits and the estimation error is only 2.99% on average using the lookup table.