A voltage-mode PWM buck regulator with end-point prediction

Author

Siu, Man ; Mok, Philip K T ; Leung, Ka Nang ; Lam, Yat-Hei ; Ki, Wing-Hung

Author_Institution

Dept. of Electr. & Electron. Eng., Hong Kong Univ. of Sci. & Technol., China

Volume

53

Issue

4

fYear

2006

fDate

4/1/2006 12:00:00 AM

Firstpage

294

Lastpage

298

Abstract

The end-point prediction (EPP) scheme for voltage-mode buck regulators is proposed. Internal nodal voltages of the regulator controller are predicted and set automatically by the proposed algorithms and circuits. The settling time of the regulator can therefore be significantly reduced for faster dynamic responses, even with dominant-pole compensation. Proven experimentally by a voltage-mode buck regulator implemented in a 0.35-μm CMOS technology, the reference-tracking speed using the EPP scheme is faster than the conventional buck regulator by about six times.

Keywords

CMOS integrated circuits; PWM power convertors; network analysis; voltage control; 0.35 micron; CMOS technology; PWM; end point prediction; regulator controller; voltage-mode buck regulators; Automatic voltage control; CMOS technology; Capacitors; Circuits; Frequency; Power supplies; Pulse width modulation; Regulators; Signal to noise ratio; Voltage control; Adaptive supply; buck regulator; dominant-pole frequency compensation; reference tracking;

fLanguage

English

Journal_Title

Circuits and Systems II: Express Briefs, IEEE Transactions on

Publisher

ieee

ISSN

1549-7747

Type

jour

DOI

10.1109/TCSII.2005.862024

Filename

1618900