Title :
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
fDate :
3/1/2004 12:00:00 AM
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;
Journal_Title :
Solid-State Circuits, IEEE Journal of
DOI :
10.1109/JSSC.2003.822773
