Computationally Enabled Minimum Total Energy Tracking for a Performance Regulate

Abstract

This article describes an architecture that auto- nomously sets the operating supply voltage ( Vdd )o fad i g i t a l system for minimum total energy dissipation, inclusive of reg- ulator loss. The technique directly computes the energy per cycle (EPC) delivered by the supply to the system, to guide V dd adjustment for minimum energy-per-cycle point (MEP; voltage: VMEP and frequency: fMEP ) tracking. The proposed approach avoids significant Vdd margins typically required for system operation near