Research on Synchronous Rectifier Digital Control Method of LLC Converter

Du Hexi; Wu Jinmeng; Meng Fangang

doi:10.1109/APET56294.2022.10072884

Research on Synchronous Rectifier Digital Control Method of LLC Converter

Du Hexi^*
, Wu Jinmeng
, Meng Fangang

^*Corresponding author for this work

Harbin Institute of Technology Weihai

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

2 Scopus citations

Abstract

Synchronous rectification is an effective method to improve efficiency and reduce loss of LLC resonant converter. In this paper, without introducing any auxiliary detection devices, a mathematical model is established to theoretically calculate the turn-on and turn-off times of the primary side and secondary side MOS in different working regions, and according to the delay and dead zone transient requirements in the hardware circuit The digital algorithm is used in the DSP processor for real-time control of synchronous rectification, which significantly reduces the design complexity of synchronous rectification control and improves the flexibility of control. And the effectiveness of the synchronous rectification control strategy is verified by 12V/125A1.5kW LLC simulation and experiment.

Original language	English
Title of host publication	2022 Asia Power and Electrical Technology Conference, APET 2022
Publisher	Institute of Electrical and Electronics Engineers Inc.
Pages	77-83
Number of pages	7
ISBN (Electronic)	9781665453349
DOIs	https://doi.org/10.1109/APET56294.2022.10072884
State	Published - 2022
Externally published	Yes
Event	2022 Asia Power and Electrical Technology Conference, APET 2022 - Virtual, Online, China Duration: 11 Nov 2022 → 13 Nov 2022

Publication series

Name	2022 Asia Power and Electrical Technology Conference, APET 2022

Conference

Conference	2022 Asia Power and Electrical Technology Conference, APET 2022
Country/Territory	China
City	Virtual, Online
Period	11/11/22 → 13/11/22

Keywords

DSP
Digital control
LLC resonant converter
Synchronous rectification

Access to Document

10.1109/APET56294.2022.10072884

Cite this

Hexi, D., Jinmeng, W., & Fangang, M. (2022). Research on Synchronous Rectifier Digital Control Method of LLC Converter. In 2022 Asia Power and Electrical Technology Conference, APET 2022 (pp. 77-83). (2022 Asia Power and Electrical Technology Conference, APET 2022). Institute of Electrical and Electronics Engineers Inc.. https://doi.org/10.1109/APET56294.2022.10072884

@inproceedings{095fbca84b4544e5bc8d3a53f3a5cdce,

title = "Research on Synchronous Rectifier Digital Control Method of LLC Converter",

abstract = "Synchronous rectification is an effective method to improve efficiency and reduce loss of LLC resonant converter. In this paper, without introducing any auxiliary detection devices, a mathematical model is established to theoretically calculate the turn-on and turn-off times of the primary side and secondary side MOS in different working regions, and according to the delay and dead zone transient requirements in the hardware circuit The digital algorithm is used in the DSP processor for real-time control of synchronous rectification, which significantly reduces the design complexity of synchronous rectification control and improves the flexibility of control. And the effectiveness of the synchronous rectification control strategy is verified by 12V/125A1.5kW LLC simulation and experiment.",

keywords = "DSP, Digital control, LLC resonant converter, Synchronous rectification",

author = "Du Hexi and Wu Jinmeng and Meng Fangang",

note = "Publisher Copyright: {\textcopyright} 2022 IEEE.; 2022 Asia Power and Electrical Technology Conference, APET 2022 ; Conference date: 11-11-2022 Through 13-11-2022",

year = "2022",

doi = "10.1109/APET56294.2022.10072884",

language = "英语",

series = "2022 Asia Power and Electrical Technology Conference, APET 2022",

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

pages = "77--83",

booktitle = "2022 Asia Power and Electrical Technology Conference, APET 2022",

address = "美国",

}

Hexi, D, Jinmeng, W & Fangang, M 2022, Research on Synchronous Rectifier Digital Control Method of LLC Converter. in 2022 Asia Power and Electrical Technology Conference, APET 2022. 2022 Asia Power and Electrical Technology Conference, APET 2022, Institute of Electrical and Electronics Engineers Inc., pp. 77-83, 2022 Asia Power and Electrical Technology Conference, APET 2022, Virtual, Online, China, 11/11/22. https://doi.org/10.1109/APET56294.2022.10072884

Research on Synchronous Rectifier Digital Control Method of LLC Converter. / Hexi, Du; Jinmeng, Wu; Fangang, Meng.
2022 Asia Power and Electrical Technology Conference, APET 2022. Institute of Electrical and Electronics Engineers Inc., 2022. p. 77-83 (2022 Asia Power and Electrical Technology Conference, APET 2022).

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

TY - GEN

T1 - Research on Synchronous Rectifier Digital Control Method of LLC Converter

AU - Hexi, Du

AU - Jinmeng, Wu

AU - Fangang, Meng

PY - 2022

Y1 - 2022

N2 - Synchronous rectification is an effective method to improve efficiency and reduce loss of LLC resonant converter. In this paper, without introducing any auxiliary detection devices, a mathematical model is established to theoretically calculate the turn-on and turn-off times of the primary side and secondary side MOS in different working regions, and according to the delay and dead zone transient requirements in the hardware circuit The digital algorithm is used in the DSP processor for real-time control of synchronous rectification, which significantly reduces the design complexity of synchronous rectification control and improves the flexibility of control. And the effectiveness of the synchronous rectification control strategy is verified by 12V/125A1.5kW LLC simulation and experiment.

AB - Synchronous rectification is an effective method to improve efficiency and reduce loss of LLC resonant converter. In this paper, without introducing any auxiliary detection devices, a mathematical model is established to theoretically calculate the turn-on and turn-off times of the primary side and secondary side MOS in different working regions, and according to the delay and dead zone transient requirements in the hardware circuit The digital algorithm is used in the DSP processor for real-time control of synchronous rectification, which significantly reduces the design complexity of synchronous rectification control and improves the flexibility of control. And the effectiveness of the synchronous rectification control strategy is verified by 12V/125A1.5kW LLC simulation and experiment.

KW - DSP

KW - Digital control

KW - LLC resonant converter

KW - Synchronous rectification

UR - https://www.scopus.com/pages/publications/85151916298

U2 - 10.1109/APET56294.2022.10072884

DO - 10.1109/APET56294.2022.10072884

M3 - 会议稿件

AN - SCOPUS:85151916298

T3 - 2022 Asia Power and Electrical Technology Conference, APET 2022

SP - 77

EP - 83

BT - 2022 Asia Power and Electrical Technology Conference, APET 2022

PB - Institute of Electrical and Electronics Engineers Inc.

T2 - 2022 Asia Power and Electrical Technology Conference, APET 2022

Y2 - 11 November 2022 through 13 November 2022

ER -

Research on Synchronous Rectifier Digital Control Method of LLC Converter

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