Dynamic effects of inductor current ripple in average current mode control of [DC/DC power converter]

Author

Suntio, T. ; Lempinen, J. ; Gadoura, I. ; Zenger, K.

Author_Institution

Electron. Lab., Oulu Univ., Finland

Volume

3

fYear

2001

fDate

6/23/1905 12:00:00 AM

Firstpage

1259

Abstract

A consistent methodology to assess the effect of inductor current ripple on the dynamics of an average-current controlled buck converter is presented based on the duty-cycle constraints derived for peak-current mode control. The duty-cycle constraints for average-current-mode control are derived on a unified basis, leading to small-signal models describing and predicting accurately the dynamical behavior of a power converter. The dynamic effect of high-frequency pole of the current-loop controller is discussed more in detail

Keywords

DC-DC power convertors; closed loop systems; control system analysis; electric current control; inductors; poles and zeros; DC/DC buck power convertor; average current mode control; current-loop controller; duty-cycle constraints; high-frequency pole; inductor current ripple dynamic effects; peak-current mode control; small-signal models; Buck converters; Inductors; Laboratories; Phase change materials; Power factor correction; Power system harmonics; Predictive models; Switching converters; Switching frequency; Topology;

fLanguage

English

Publisher

ieee

Conference_Titel

Power Electronics Specialists Conference, 2001. PESC. 2001 IEEE 32nd Annual

Conference_Location

Vancouver, BC

ISSN

0275-9306

Print_ISBN

0-7803-7067-8

Type

conf

DOI

10.1109/PESC.2001.954293

Filename

954293