Ripple effects on small signal models in average current mode control

Author

Chunxiao Sun ; Lehman, Brad ; Sun, Jian

Author_Institution

IPD/NU, Int. Power Devices Inc., Boston, MA, USA

Volume

2

fYear

2000

fDate

6/22/1905 12:00:00 AM

Firstpage

818

Abstract

The effects of switching frequency ripple on the behavior of average current mode PWM DC/DC converters are studied. Ripple estimation and superposition methods are applied to derive new frequency-dependent averaged models that take into account these effects. Small-signal analysis of the new model reveals several important characteristics of average current mode control, especially under large ripple conditions, that previous models were unable to predict. Discussions on the small-signal models for PWM DC/DC converters are demonstrated

Keywords

DC-DC power convertors; PWM power convertors; control system analysis; electric current control; switching circuits; PWM DC/DC power converters; average current mode control; control characteristics; frequency-dependent averaged models; ripple estimation; small signal models; small-signal analysis; superposition methods; switching frequency ripple; DC-DC power converters; Frequency estimation; Power engineering and energy; Power engineering computing; Predictive models; Pulse width modulation; Pulse width modulation converters; Quantum computing; Sun; Voltage control;

fLanguage

English

Publisher

ieee

Conference_Titel

Applied Power Electronics Conference and Exposition, 2000. APEC 2000. Fifteenth Annual IEEE

Conference_Location

New Orleans, LA

Print_ISBN

0-7803-5864-3

Type

conf

DOI

10.1109/APEC.2000.822599

Filename

822599