Combined linear-nonlinear control for improved dynamic response of dc-dc buck converter

Author

Xin Chen ; Ping Luo ; Shao-Wei Zhen

Author_Institution

State Key Lab. of Electron. Thin Films & Integrated Devices, Univ. of Electron. Sci. & Technol. of China, Chengdu, China

fYear

2012

fDate

Oct. 29 2012-Nov. 1 2012

Firstpage

1

Lastpage

3

Abstract

This paper presents linear-non linear control design and implementation method to achieve improved dynamic response of dc-dc buck converters. The implementation includes a threshold logic which is relatively simple and well suited for practical high frequency switched-mode power supplies. Compared to the conventional dc-dc buck converters which only use linear control, the linear-nonlinear control(LnLc) is presented as a solution to improve dynamic response. Thus, a buck converter with proposed structure is designed and simulated in a standard 65nm CMOS process. The simulation results show the step-load transient response time is within 10us.

Keywords

DC-DC power convertors; nonlinear control systems; transient response; CMOS process; DC-DC buck converter; dynamic response improvement; high frequency switched-mode power supplies; linear-nonlinear control design; size 65 nm; step-load transient response time; threshold logic; time 10 mus; CMOS process; Pulse width modulation; Simulation; Stability analysis; Standards; Transient response; Voltage control;

fLanguage

English

Publisher

ieee

Conference_Titel

Solid-State and Integrated Circuit Technology (ICSICT), 2012 IEEE 11th International Conference on

Conference_Location

Xi´an

Print_ISBN

978-1-4673-2474-8

Type

conf

DOI

10.1109/ICSICT.2012.6467922

Filename

6467922