Linear SR Mode of Power MOSFETs and its Application in an EMI-Suppressing Rectifier Bridge

Research output: Chapters, Conference Papers, Creative and Literary Works › RGC 32 - Refereed conference paper (with host publication) › peer-review

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Detail(s)

Original languageEnglish
Title of host publication2020 IEEE Applied Power Electronics Conference and Exposition (APEC)
PublisherInstitute of Electrical and Electronics Engineers, Inc.
Pages672-679
ISBN (electronic)9781728148298
ISBN (print)9781728148304
Publication statusPublished - Mar 2020

Publication series

NameConference Proceedings - IEEE Applied Power Electronics Conference and Exposition - APEC
Volume2020-March
ISSN (Print)1048-2334
ISSN (electronic)2470-6647

Conference

Title35th Annual IEEE Applied Power Electronics Conference and Exposition, APEC 2020
PlaceUnited States
CityNew Orleans
Period15 - 19 March 2020

Link(s)

DOI

DOI
Check@CityULib
Link to Scopus https://www.scopus.com/record/display.uri?eid=2-s2.0-85087790430&origin=recordpage
Permanent Link https://scholars.cityu.edu.hk/en/publications/publication(070acd56-9f6e-4a9d-bf9d-28c3a460ca4d).html

Abstract

This work introduces the property of linear, reverse operation of a power MOSFET. In a typical synchronous rectifier (SR) application, in its conduction phase, a MOSFET is fully turned on to minimize loss. Yet another operating mode is found for SR MOSFETs: the drain voltage exhibits a linear relationship to the gate voltage where the gate voltage level is around the threshold. The body diode is not activated, and the dropout voltage is lower than the diode threshold. This linear relationship holds from DC to MHz range. Therefore, the reverse-operated MOSFET is employed to inject high frequency ripple signal to the power circuit. An active rectifier bridge with EMI mitigation function is built with SR MOSFETs to demonstrate an application of the introduced linear property with analogue control technique developed. Measurement of the third-quadrant linear SR characteristics for different MOSFET samples is exhibited. The active bridge prototype is used to replace the diode bridge in a PFC converter. Experiment shows EMI reduction, filter size reduction as well as loss reduction.

Research Area(s)

  • Active EMI filter, MOSFET Modelling, Synchronous rectifier

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MOSFET Keyphrases
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Power MOSFET Keyphrases
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Synchronous Rectifi... Keyphrases
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Rectifier Bridge Keyphrases
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Rectifier Mode Keyphrases
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Application Engineering
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Metal-Oxide-Semicon... Engineering
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Rectifier Engineering
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Bridge Rectifier Engineering
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applications INIS
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Citation Format(s)

[ RIS ] [ BibTeX ]
Linear SR Mode of Power MOSFETs and its Application in an EMI-Suppressing Rectifier Bridge. / Wang, Ke-Wei; Zhang, Kun; Tung, Chung-Pui et al.
2020 IEEE Applied Power Electronics Conference and Exposition (APEC). Institute of Electrical and Electronics Engineers, Inc., 2020. p. 672-679 9124354 (Conference Proceedings - IEEE Applied Power Electronics Conference and Exposition - APEC; Vol. 2020-March).

Research output: Chapters, Conference Papers, Creative and Literary Works › RGC 32 - Refereed conference paper (with host publication) › peer-review