A fully digital, energy-efficient, adaptive power-supply regulator

被引：99

作者：

Wei, GY ^{[1
]}

Horowitz, M ^{[1
]}

机构：

[1] Stanford Univ, Comp Syst Lab, Stanford, CA 94305 USA

来源：

IEEE JOURNAL OF SOLID-STATE CIRCUITS | 1999年 / 34卷 / 04期

关键词：

adaptive control; dc-dc power conversion; frequency-locked loops; power supplies;

D O I：

10.1109/4.753685

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

A voltage scaling technique for energy-efficient operation requires an adaptive power-supply regulator to significantly reduce dynamic power consumption in synchronous digital circuits. A digitally controlled power converter that dynamically tracks circuit performance with a ring oscillator and regulates the supply voltage to the minimum required to operate at a desired frequency is presented, This paper investigates the issues involved in designing a fully digital power converter and describes a design fabricated in a MOSIS 0.8-mu m process, A variable-frequency digital controller design takes advantage of the power savings available through adaptive supply-voltage scaling and demonstrates converter efficiency greater than 90% over a dynamic range of regulated voltage levels.

引用

页码：520 / 528

页数：9

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