A Sub-µW Energy-Performance-Aware IoT SoC With a Triple-Mode Power Management Un

Abstract

This article presents an ultra-low-power (ULP) Internet-of-Things (IoT) system-on-chip (SoC) using a triple- mode power management unit (PMU) to achieve self-adaptive power–performance scaling and energy-minimized operation. The proposed PMU comprises three modes: energy-aware (EA) mode, performance-aware (PA) mode, and minimum energy point (MEP) tracking mode. By controlling a microprocessor with the three modes, the SoC can adaptively scale its frequency and supply voltage based on either the