An efficient digital sliding controller for adaptive power-supply regulation

Author

Kim, Jaeha ; Horowitz, Mark A.

Author_Institution

Comput. Syst. Lab., Stanford Univ., CA, USA

Volume

37

Issue

5

fYear

2002

fDate

5/1/2002 12:00:00 AM

Firstpage

639

Lastpage

647

Abstract

Proposes a digital controller for adaptive power-supply regulation that uses sliding control, which is a widely used technique in switching power supplies for its fast transient response and robust stability. A novel reformulation of the sliding control law enables a simple and power-efficient digital implementation. The reference circuit can be either a delay line or a ring oscillator, and the sensor circuits for both cases are discussed. The prototype chip fabricated in 0.25-μm CMOS technology demonstrates a power efficiency of 89% - 95 % over the regulated voltage range of 1.1 - 2.3 V

Keywords

CMOS digital integrated circuits; adaptive control; circuit stability; delay lines; switched mode power supplies; transient response; voltage regulators; 0.25 micron; 1.1 to 2.3 V; 89 to 95 percent; CMOS; adaptive power-supply regulation; delay line; digital sliding controller; power efficiency; power-efficient digital implementation; regulated voltage range; ring oscillator; robust stability; switching power supplies; transient response; Adaptive control; CMOS technology; Circuits; Delay lines; Digital control; Power supplies; Programmable control; Ring oscillators; Robust stability; Transient response;

fLanguage

English

Journal_Title

Solid-State Circuits, IEEE Journal of

Publisher

ieee

ISSN

0018-9200

Type

jour

DOI

10.1109/4.997858

Filename

997858