Design of a linear-assisted DC-DC switching regulator with constant switching frequency

Author

Martinez-Garcia, Herminio

Author_Institution

Dept. of Electron. Eng., Tech. Univ. of Catalonia, Barcelona, Spain

fYear

2014

fDate

3-6 Aug. 2014

Firstpage

455

Lastpage

458

Abstract

This article shows the proposal of a linear-assisted converter or linear-&-switching hybrid converter with a constant switching frequency. The control loop of the system is based on the current-mode technique. The main disadvantage of a converter with current-mode control is the inherent instability of the loop when switch duty ratios are greater than 0.5. In order to make stable the proposed linear-assisted converter, the article shows the technique based on a slope compensation.

Keywords

DC-DC power convertors; circuit stability; switching convertors; constant switching frequency; control loop; current-mode control; current-mode technique; linear-&-switching hybrid converter; linear-assisted DC-DC switching regulator design; linear-assisted converter; slope compensation; switch duty ratios; Inductance; Regulators; Switches; Switching converters; Switching frequency; Voltage control; DC-DC Switching Converters; Linear-Assisted DC-DC Voltage Regulators; Voltage Linear Regulators;

fLanguage

English

Publisher

ieee

Conference_Titel

Circuits and Systems (MWSCAS), 2014 IEEE 57th International Midwest Symposium on

Conference_Location

College Station, TX

ISSN

1548-3746

Print_ISBN

978-1-4799-4134-6

Type

conf

DOI

10.1109/MWSCAS.2014.6908450

Filename

6908450