Leakage Power Analysis Based on Correlation-Hessian Matrix

With the increasing complexity of VLSI designs,process variations have a growing impact on circuit performance for today's IC technologies.A hierarchical modeling for performance analysis is built in this paper.Using the Hessian matrix,improved quadratic model is defined.Circuit delay and the lognormal expansion of the leakage power are expressed as the improved quadratic model.To reduce complexity,a novel parameter reduction method based on CH(Correlation-Hessian matrix) is presented.It accounts for all correlations,from manufacturing process dependence,to high-level analysis to produce more accurate performance predictions.Experimental results indicated that the proposed method achieves high computational efficiency and accuracy.