THANOS: Eliminating Redundant States in Transient Thermal Analysis

Efficient thermal simulation has recently become a cutting edge research topic, as it requires the solution of very large equation systems. However, in most cases, temperature is not required to be computed at every point on the IC but only at specific hotspots and in some predefined time windows, in order to assess the circuits compliance with thermal specifications. In this paper, we propose a computationally efficient low-rank time-limited Balanced Truncation algorithm, which retains the system-theoretic advantages in the model order for fast hotspot thermal simulation.