Digital Sliding-Mode Controller For High-Frequency DC/DC SMPS

Author

Guo, Shuibao ; Lin-Shi, Xuefang ; Allard, Bruno ; Gao, Yanxia ; Ruan, Yi

Author_Institution

INSA LYON, Univ. de Lyon, Villeurbanne, France

Volume

25

Issue

5

fYear

2010

fDate

5/1/2010 12:00:00 AM

Firstpage

1120

Lastpage

1123

Abstract

Digital control technique is becoming an attractive alternative for high-frequency switching mode power supply (SMPS). This paper introduces a fully synthesizable digital sliding-mode (SM) controller for high-frequency dc/dc SMPS. The proposed SM controller is associated with a digital pulsewidth modulation (DPWM) block to operate at constant and high switching frequency compared to already published approaches. The digital SM controller is experimentally validated by means of field-programmable gate array in a 4-MHz step-down converter with 10-bit analog-to-digital conversion (ADC) and 11-bit DPWM. Measured dynamic performances are superior to conventional digital controllers for dc/dc SMPS.

Keywords

PWM power convertors; analogue-digital conversion; field programmable gate arrays; switched mode power supplies; variable structure systems; analog-to-digital conversion; digital pulsewidth modulation; digital sliding-mode controller; field-programmable gate array; high-frequency DC/DC SMPS; step-down converter; switching mode power supply; Digital controller; field-programmable-gate-array (FPGA) implementation; high-frequency switching-mode power supply (SMPS); sliding-mode (SM) control;

fLanguage

English

Journal_Title

Power Electronics, IEEE Transactions on

Publisher

ieee

ISSN

0885-8993

Type

jour

DOI

10.1109/TPEL.2009.2039356

Filename

5372003