학술논문

A Stabilizing Centralized Controller for On-Chip Power Delivery Networks
Document Type
Periodical
Source
IEEE Transactions on Circuits and Systems II: Express Briefs IEEE Trans. Circuits Syst. II Circuits and Systems II: Express Briefs, IEEE Transactions on. 67(4):680-684 Apr, 2020
Subject
Components, Circuits, Devices and Systems
Load modeling
Voltage control
Output feedback
Centralized control
Logic gates
Numerical models
Circuit stability
MIMO controller
power delivery network
LDO
Language
ISSN
1549-7747
1558-3791
Abstract
A major challenge currently facing integrated systems, such as microprocessors and systems-on-chip is power delivery. With increasing system size and complexity, multiple voltage regulators are often needed for a single power domain. This connection raises non-trivial stability issues that often render the system useless. It is therefore of great practical interest to tackle the stability of such systems. This brief proposes the design of a centralized controller with the aim of rendering such power delivery networks (PDNs) stable without compromising their performance. Theoretical results are confirmed with extensive transistor-level simulations and demonstrate that the controller is capable of stabilizing PDNs with much greater area efficiency than conventional techniques.