RTL power modeling and estimation of sleep transistor based power gating

  • Authors:
  • Sven Rosinger;Domenik Helms;Wolfgang Nebel

  • Affiliations:
  • OFFIS Research Institute, Oldenburg, Germany;OFFIS Research Institute, Oldenburg, Germany;University of Oldenburg, Oldenburg, Germany

  • Venue:
  • PATMOS'07 Proceedings of the 17th international conference on Integrated Circuit and System Design: power and timing modeling, optimization and simulation
  • Year:
  • 2007

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Abstract

We present an accurate RT level estimation methodology describing the power consumption of a component under power gating. By developing separate models for the on- and off-state and the transition cost between them, we can limit errors to below 10% compared to SPICE. The models support several implementation styles of power gating as NMOS/PMOS or Super-Cutoff. Additionally the models can be used to size the sleep transistors more accurate. We show, how the models can be integrated into a high level power estimation framework supporting design space exploration for several design for leakage methodologies.