Characterization and comparison of noise generation for quasi-resonant and pulse-width-modulated converters

Persistent Link:
http://hdl.handle.net/10150/278064
Title:
Characterization and comparison of noise generation for quasi-resonant and pulse-width-modulated converters
Author:
Hsiu, Leng-nien, 1964-
Issue Date:
1991
Publisher:
The University of Arizona.
Rights:
Copyright © is held by the author. Digital access to this material is made possible by the University Libraries, University of Arizona. Further transmission, reproduction or presentation (such as public display or performance) of protected items is prohibited except with permission of the author.
Abstract:
A buck converter with a given output filter is operated with pulse-width modulated and quasi-resonant switching schemes at the same nominal load and switching frequency. Electromagnetic interference generated by the natural switching action of the converter is examined by Fourier spectral analysis. Interference caused by excitation of parasitic elements is examined experimentally. Quasi-resonant converters are found to have a lower switching frequency harmonic bandwidth than the equivalent pulse-width modulated converter. The most significant parasitic responses are the turn-on current and turn-off voltage of the catch diode, and the gate charge current of the MOSFET switch. A significant decrease in radiated and conducted noise is obtained when the gate drive voltage rise and fall times are increased, which is possible without loss of efficiency using quasi-resonant switching.
Type:
text; Thesis-Reproduction (electronic)
Keywords:
Engineering, Electronics and Electrical.
Degree Name:
M.S.
Degree Level:
masters
Degree Program:
Graduate College
Degree Grantor:
University of Arizona
Advisor:
Witulski, Arthur F.

Full metadata record

DC FieldValue Language
dc.language.isoen_USen_US
dc.titleCharacterization and comparison of noise generation for quasi-resonant and pulse-width-modulated convertersen_US
dc.creatorHsiu, Leng-nien, 1964-en_US
dc.contributor.authorHsiu, Leng-nien, 1964-en_US
dc.date.issued1991en_US
dc.publisherThe University of Arizona.en_US
dc.rightsCopyright © is held by the author. Digital access to this material is made possible by the University Libraries, University of Arizona. Further transmission, reproduction or presentation (such as public display or performance) of protected items is prohibited except with permission of the author.en_US
dc.description.abstractA buck converter with a given output filter is operated with pulse-width modulated and quasi-resonant switching schemes at the same nominal load and switching frequency. Electromagnetic interference generated by the natural switching action of the converter is examined by Fourier spectral analysis. Interference caused by excitation of parasitic elements is examined experimentally. Quasi-resonant converters are found to have a lower switching frequency harmonic bandwidth than the equivalent pulse-width modulated converter. The most significant parasitic responses are the turn-on current and turn-off voltage of the catch diode, and the gate charge current of the MOSFET switch. A significant decrease in radiated and conducted noise is obtained when the gate drive voltage rise and fall times are increased, which is possible without loss of efficiency using quasi-resonant switching.en_US
dc.typetexten_US
dc.typeThesis-Reproduction (electronic)en_US
dc.subjectEngineering, Electronics and Electrical.en_US
thesis.degree.nameM.S.en_US
thesis.degree.levelmastersen_US
thesis.degree.disciplineGraduate Collegeen_US
thesis.degree.grantorUniversity of Arizonaen_US
dc.contributor.advisorWitulski, Arthur F.en_US
dc.identifier.proquest1346741en_US
dc.identifier.bibrecord.b27280135en_US
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