Second-order sliding-mode controller for higher-order DC-DC converters

Author

Leyva, Ramon ; Maksimovic, Dragan ; Rui Ling

Author_Institution

Dept. Electron., Electr. & Autom. Control Eng., Univ. Rovira i Virgili, Tarragona, Spain

fYear

2014

fDate

22-25 June 2014

Firstpage

1

Lastpage

7

Abstract

The paper adapts the second-order sliding mode (SOSM) control technique to higher-order dc-dc converters. In particular, the paper presents an adaptation of this control technique for buck converters with input filter. The approach consists of regulating the converter output voltage by means of a state-machine similar to the basic SOSM controller, which is shown to perform well as long as the input filter is properly damped, thus ensuring the overall converter stability. Stability and fast dynamic responses are verified by simulations on a 5 V-to-1.3 V point-of-load buck converter with a damped LC input filter.

Keywords

DC-DC power convertors; LC circuits; power filters; variable structure systems; DC-DC converters; LC input filter; SOSM control technique; buck converters; converter stability; fast dynamic responses; point-of-load buck converter; second-order sliding mode control technique; voltage 5 V to -1.3 V; Capacitors; Damping; Integrated circuit modeling; Power harmonic filters; Switches; Trajectory; converter input filter; high-order sliding; sliding-mode control; state-machine controller;

fLanguage

English

Publisher

ieee

Conference_Titel

Control and Modeling for Power Electronics (COMPEL), 2014 IEEE 15th Workshop on

Conference_Location

Santander

Type

conf

DOI

10.1109/COMPEL.2014.6877206

Filename

6877206