A Self-Tuning IoT Processor Using Leakage-Ratio Measurement for Energy-Optimal O

Abstract

Energy-optimal operation is one of the key require- ments of the Internet-of-Things (IoT) applications to increase battery life. In this article, using a combination of dynamic voltage scaling (DVS) and adaptive body biasing (ABB), the energy-optimal operation is achieved with a given fixed operating frequency determined by application demands. Based on the observation that the ratio of leakage power to dynamic power can be an accurate indicator for the optimal operating point, the proposed metho