Publication

Minimum Energy Point in Constant Frequency Designs under Adaptive Supply Voltage and Body Bias Adjustment in 55 nm DDC

Andreas Peter Burg, David Ruffieux
2019
Conference paper
Abstract

In this paper, we describe a systematic low-power design methodology for technologies that offer a strong body factor. Specifically, we explore both the body bias voltage and the supply voltage knobs in order to find the MEP (minimum energy point) for a constant target frequency. Our methodology accounts for process and temperature (PT) variations while charting the design space for a simple reference design. We then show how to scale the energy data of this reference design to any arbitrary design. A case study of a 32 bit RISC microprocessor achieves an energy estimation match of our significantly less complex estimation methodology within 1% of traditional signoff results.

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