A Model Study of an All-Digital, Discrete-Time and Embedded Linear Regulator

TL;DR

This paper introduces an all-digital, discrete-time linear regulator designed for embedded digital circuits, focusing on its circuit design, control models, and the parametric design space for transient response and stability.

Contribution

It presents a novel all-digital linear regulator model and explores its design parameters for improved transient response and stability within digital systems.

Findings

Design of an all-digital linear regulator

Analysis of transient response and stability

Exploration of parametric design space

Abstract

With an increasing number of power-states, finer- grained power management and larger dynamic ranges of digital circuits, the integration of compact, scalable linear-regulators embedded deep within logic blocks has become important. While analog linear-regulators have traditionally been used in digital ICs, the need for digitally implementable designs that can be synthesized and embedded in digital functional units for ultra fine- grained power management has emerged. This paper presents the circuit design and control models of an all-digital, discrete-time linear regulator and explores the parametric design space for transient response time and loop stability.