Feedback control design of Zero-Voltage-Switched Quasi-Resonant dc-dc converters

Author

Eaksuwan, Sira ; Bunlaksananusorn, Chanin

Author_Institution

Fac. of Eng., King Mongkut´´s Inst. of Technol. Ladkrabang (KMITL), Bangkok

Volume

2

fYear

2008

fDate

14-17 May 2008

Firstpage

973

Lastpage

976

Abstract

In this paper, feedback control design of Zero-Voltage-Switched Quasi-Resonant dc-dc converters is presented. The power stage model is derived by a method of circuit averaging, while the control stage model, consisting of an Error Amplifier (EA) and Voltage Control Oscillator (VCO), determined by the input/output relationship of the circuits. The obtained models are used in feedback control design of the prototyped converter. Test results show that the converter exhibits good output voltage regulation and fast transient response to a step-load change.

Keywords

DC-DC power convertors; oscillators; resonant power convertors; circuit averaging; error amplifier; feedback control design; input-output relationship; output voltage regulation; voltage control oscillator; zero-voltage-switched quasiresonant dc-dc converters; Circuits; DC-DC power converters; Feedback control; Frequency; Prototypes; Switches; Switching converters; Switching loss; Voltage control; Voltage-controlled oscillators;

fLanguage

English

Publisher

ieee

Conference_Titel

Electrical Engineering/Electronics, Computer, Telecommunications and Information Technology, 2008. ECTI-CON 2008. 5th International Conference on

Conference_Location

Krabi

Print_ISBN

978-1-4244-2101-5

Electronic_ISBN

978-1-4244-2102-2

Type

conf

DOI

10.1109/ECTICON.2008.4600594

Filename

4600594