Controller design for a synchronous buck converter with multiple switched inductors

Author

Yu, Shiang-Hwua ; Tseng, Ming-Hung

Author_Institution

Dept. of Electr. Eng., Nat. Sun Yat-Sen Univ., Kaohsiung, Taiwan

fYear

2012

Firstpage

349

Lastpage

352

Abstract

A novel switching controller for a multiple-inductor buck converter is presented based on quantized control theory. This new design gives rise to a self-switching voltage-feedback buck converter, eliminating the need of using PWM generator and current-sense amplifiers. A 12V/1.5V three-inductor buck converter is designed for illustration. The experiment reports a static regulation error of 1.13%, step-up transient regulation error of 7.3% (110mV), and step-down transient regulation error of 8.4% (126mV) under the load current variation from 0A/50A to 50A/0A at a slew rate of 30A/μs.

Keywords

control system synthesis; feedback; switching convertors; controller design; load current variation; multiple switched inductors; quantized control theory; self-switching voltage-feedback buck converter; static regulation error; step-down transient regulation error; step-up transient regulation error; switching controller; synchronous buck converter; three-inductor buck converter; voltage 110 mV; voltage 126 mV; Inductors; Logic circuits; Power electronics; Regulators; Voltage control; Voltage regulator module; quantized control; self-switching; synchronous buck converter;

fLanguage

English

Publisher

ieee

Conference_Titel

Applied Electronics (AE), 2012 International Conference on

Conference_Location

Pilsen

ISSN

1803-7232

Print_ISBN

978-1-4673-1963-8

Type

conf

Filename

6328878