EMI Noise Reduction in GaN-based Full-bridge LLC Converter

Yue Cao; Yuxuan Chen; Xingwei Huang; Pengyuan Ren; Wenjie Chen; Xu Yang

doi:10.1109/WiPDAAsia51810.2021.9656040

EMI Noise Reduction in GaN-based Full-bridge LLC Converter

Yue Cao
, Yuxuan Chen
, Xingwei Huang
, Pengyuan Ren
, Wenjie Chen
, Xu Yang

School of Electrical Engineering

Xi'an Jiaotong University

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution › peer-review

13 Scopus citations

Abstract

In medium-to-high power converters, full-bridge LLC converter has been a common choice due to its high efficiency and power density. However, today, the EMI noise remains a significant obstacle due to high dv/dt and large parasitic capacitors in transformers and MOSFETs. Through eliminating displacement currents, the presented technique can help to maintain low-profile converter by avoiding the bulky CM chokes, so as to further increase power density. This paper analyses main sources of EMI noise in FB LLC converter and presents a cancellation technique to eliminate EMI noise without other passive components. A lumped simulation circuit shows that the optimized converter generated above 50dB less EMI noise than a traditional converter.

Original language	English
Title of host publication	IEEE Workshop on Wide Bandgap Power Devices and Applications in Asia, WiPDA Asia 2021
Publisher	Institute of Electrical and Electronics Engineers Inc.
Pages	276-280
Number of pages	5
ISBN (Electronic)	9781665418515
DOIs	https://doi.org/10.1109/WiPDAAsia51810.2021.9656040
State	Published - 2021
Event	2021 IEEE Workshop on Wide Bandgap Power Devices and Applications in Asia, WiPDA Asia 2021 - Wuhan, China Duration: 25 Aug 2021 → 27 Aug 2021

Publication series

Name	IEEE Workshop on Wide Bandgap Power Devices and Applications in Asia, WiPDA Asia 2021

Conference

Conference	2021 IEEE Workshop on Wide Bandgap Power Devices and Applications in Asia, WiPDA Asia 2021
Country/Territory	China
City	Wuhan
Period	25/08/21 → 27/08/21

Keywords

EMI naked-noise
EMI noise cancellation
LLC converter
Symmetric resonant tank

Access to Document

10.1109/WiPDAAsia51810.2021.9656040

Cite this

Cao, Y., Chen, Y., Huang, X., Ren, P., Chen, W., & Yang, X. (2021). EMI Noise Reduction in GaN-based Full-bridge LLC Converter. In IEEE Workshop on Wide Bandgap Power Devices and Applications in Asia, WiPDA Asia 2021 (pp. 276-280). (IEEE Workshop on Wide Bandgap Power Devices and Applications in Asia, WiPDA Asia 2021). Institute of Electrical and Electronics Engineers Inc.. https://doi.org/10.1109/WiPDAAsia51810.2021.9656040

@inproceedings{c20023646e2240d7a55134325d84fb30,

title = "EMI Noise Reduction in GaN-based Full-bridge LLC Converter",

abstract = "In medium-to-high power converters, full-bridge LLC converter has been a common choice due to its high efficiency and power density. However, today, the EMI noise remains a significant obstacle due to high dv/dt and large parasitic capacitors in transformers and MOSFETs. Through eliminating displacement currents, the presented technique can help to maintain low-profile converter by avoiding the bulky CM chokes, so as to further increase power density. This paper analyses main sources of EMI noise in FB LLC converter and presents a cancellation technique to eliminate EMI noise without other passive components. A lumped simulation circuit shows that the optimized converter generated above 50dB less EMI noise than a traditional converter.",

keywords = "EMI naked-noise, EMI noise cancellation, LLC converter, Symmetric resonant tank",

author = "Yue Cao and Yuxuan Chen and Xingwei Huang and Pengyuan Ren and Wenjie Chen and Xu Yang",

note = "Publisher Copyright: {\textcopyright} 2021 IEEE.; 2021 IEEE Workshop on Wide Bandgap Power Devices and Applications in Asia, WiPDA Asia 2021 ; Conference date: 25-08-2021 Through 27-08-2021",

year = "2021",

doi = "10.1109/WiPDAAsia51810.2021.9656040",

language = "英语",

series = "IEEE Workshop on Wide Bandgap Power Devices and Applications in Asia, WiPDA Asia 2021",

publisher = "Institute of Electrical and Electronics Engineers Inc.",

pages = "276--280",

booktitle = "IEEE Workshop on Wide Bandgap Power Devices and Applications in Asia, WiPDA Asia 2021",

}

Cao, Y, Chen, Y, Huang, X, Ren, P, Chen, W & Yang, X 2021, EMI Noise Reduction in GaN-based Full-bridge LLC Converter. in IEEE Workshop on Wide Bandgap Power Devices and Applications in Asia, WiPDA Asia 2021. IEEE Workshop on Wide Bandgap Power Devices and Applications in Asia, WiPDA Asia 2021, Institute of Electrical and Electronics Engineers Inc., pp. 276-280, 2021 IEEE Workshop on Wide Bandgap Power Devices and Applications in Asia, WiPDA Asia 2021, Wuhan, China, 25/08/21. https://doi.org/10.1109/WiPDAAsia51810.2021.9656040

EMI Noise Reduction in GaN-based Full-bridge LLC Converter. / Cao, Yue; Chen, Yuxuan; Huang, Xingwei et al.
IEEE Workshop on Wide Bandgap Power Devices and Applications in Asia, WiPDA Asia 2021. Institute of Electrical and Electronics Engineers Inc., 2021. p. 276-280 (IEEE Workshop on Wide Bandgap Power Devices and Applications in Asia, WiPDA Asia 2021).

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution › peer-review

TY - GEN

T1 - EMI Noise Reduction in GaN-based Full-bridge LLC Converter

AU - Cao, Yue

AU - Chen, Yuxuan

AU - Huang, Xingwei

AU - Ren, Pengyuan

AU - Chen, Wenjie

AU - Yang, Xu

PY - 2021

Y1 - 2021

N2 - In medium-to-high power converters, full-bridge LLC converter has been a common choice due to its high efficiency and power density. However, today, the EMI noise remains a significant obstacle due to high dv/dt and large parasitic capacitors in transformers and MOSFETs. Through eliminating displacement currents, the presented technique can help to maintain low-profile converter by avoiding the bulky CM chokes, so as to further increase power density. This paper analyses main sources of EMI noise in FB LLC converter and presents a cancellation technique to eliminate EMI noise without other passive components. A lumped simulation circuit shows that the optimized converter generated above 50dB less EMI noise than a traditional converter.

AB - In medium-to-high power converters, full-bridge LLC converter has been a common choice due to its high efficiency and power density. However, today, the EMI noise remains a significant obstacle due to high dv/dt and large parasitic capacitors in transformers and MOSFETs. Through eliminating displacement currents, the presented technique can help to maintain low-profile converter by avoiding the bulky CM chokes, so as to further increase power density. This paper analyses main sources of EMI noise in FB LLC converter and presents a cancellation technique to eliminate EMI noise without other passive components. A lumped simulation circuit shows that the optimized converter generated above 50dB less EMI noise than a traditional converter.

KW - EMI naked-noise

KW - EMI noise cancellation

KW - LLC converter

KW - Symmetric resonant tank

UR - https://www.scopus.com/pages/publications/85124793828

U2 - 10.1109/WiPDAAsia51810.2021.9656040

DO - 10.1109/WiPDAAsia51810.2021.9656040

M3 - 会议稿件

AN - SCOPUS:85124793828

T3 - IEEE Workshop on Wide Bandgap Power Devices and Applications in Asia, WiPDA Asia 2021

SP - 276

EP - 280

BT - IEEE Workshop on Wide Bandgap Power Devices and Applications in Asia, WiPDA Asia 2021

PB - Institute of Electrical and Electronics Engineers Inc.

T2 - 2021 IEEE Workshop on Wide Bandgap Power Devices and Applications in Asia, WiPDA Asia 2021

Y2 - 25 August 2021 through 27 August 2021

ER -

Cao Y, Chen Y, Huang X, Ren P, Chen W , Yang X. EMI Noise Reduction in GaN-based Full-bridge LLC Converter. In IEEE Workshop on Wide Bandgap Power Devices and Applications in Asia, WiPDA Asia 2021. Institute of Electrical and Electronics Engineers Inc. 2021. p. 276-280. (IEEE Workshop on Wide Bandgap Power Devices and Applications in Asia, WiPDA Asia 2021). doi: 10.1109/WiPDAAsia51810.2021.9656040

EMI Noise Reduction in GaN-based Full-bridge LLC Converter

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