A fully integrated on-chip DC-DC conversion and power management system

Author

Patounakis, George ; Li, Yee William ; Shepard, Kenneth L.

Author_Institution

Dept. of Electr. Eng., Columbia Univ., New York, NY, USA

Volume

39

Issue

3

fYear

2004

fDate

3/1/2004 12:00:00 AM

Firstpage

443

Lastpage

451

Abstract

It is widely recognized that adaptive control of the power supply is one of the most effective variables to achieve energy-efficient computation. Most on-chip dc-dc conversion systems have relied on buck converters with off-chip LC filters. In this paper, we describe the development of a software controllable, fully integrated on-chip dc-dc downconversion system that combines switched-capacitor voltage dividers and linear regulators to efficiently regulate from 2.5 V down to about 0.65 V. The use of switched-capacitor supplies offers better efficiencies than what is achievable with linear regulators alone.

Keywords

DC-DC power convertors; power supply circuits; system-on-chip; voltage regulators; 2.5 to 0.65 V; adaptive control; buck converters; energy-efficient computation; linear regulators; off-chip LC filters; on-chip DC-DC conversion; on-chip dc-dc downconversion system; power management system; power supply; software controllable; switched-capacitor supplies; switched-capacitor voltage dividers; voltage regulators; Adaptive control; Buck converters; Energy efficiency; Energy management; Filters; Power supplies; Power system management; Regulators; System-on-a-chip; Voltage control;

fLanguage

English

Journal_Title

Solid-State Circuits, IEEE Journal of

Publisher

ieee

ISSN

0018-9200

Type

jour

DOI

10.1109/JSSC.2003.822773

Filename

1269920