Modeling and Analysis of Coupling Effect in Four Legged Core for Multi-phase Buck Converter

Yanda Lyu; Bima Nugraha Sanusi; Ziwei Ouyang

doi:10.1109/APEC43580.2023.10131131

Modeling and Analysis of Coupling Effect in Four Legged Core for Multi-phase Buck Converter

Yanda Lyu
, Bima Nugraha Sanusi
, Ziwei Ouyang

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

Abstract

As a popular topology in point of load (PoL) application, multiphase buck converter always faces a trade-off problem between faster load-transient response and smaller inductor ripple current, which is solved by the coupled inductor in a number of literatures. This paper is aimed at modeling and analysis for a four-legged integrated indirect coupled inductor applied in a four-phase buck converter for 5 V DC to PoL application. The quantitative analysis is conducted through an equivalent steady-state inductance model. Inductor operation is investigated under different duty cycle in the circuit simulation using parameters extracted from FEM simulation. The result is then verified using a highly compact converter prototype. Finally, efficiency performance of the prototype is tested for seeing the integrated inductor practical value in industry.

Original language	English
Title of host publication	Proceedings of 2023 IEEE Applied Power Electronics Conference and Exposition
Publisher	IEEE
Publication date	2023
Pages	3307-13
ISBN (Print)	978-1-6654-7540-2
DOIs	https://doi.org/10.1109/APEC43580.2023.10131131
Publication status	Published - 2023
Event	38^th Annual IEEE Applied Power Electronics Conference and Exposition - Orange County Convention Center, Orlando, United States Duration: 19 Mar 2023 → 23 Mar 2023

Conference

Conference	38^th Annual IEEE Applied Power Electronics Conference and Exposition
Location	Orange County Convention Center
Country/Territory	United States
City	Orlando
Period	19/03/2023 → 23/03/2023

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10.1109/APEC43580.2023.10131131

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@inproceedings{037f06127f5649b7a2c6d39a83c4e7f2,

title = "Modeling and Analysis of Coupling Effect in Four Legged Core for Multi-phase Buck Converter",

abstract = "As a popular topology in point of load (PoL) application, multiphase buck converter always faces a trade-off problem between faster load-transient response and smaller inductor ripple current, which is solved by the coupled inductor in a number of literatures. This paper is aimed at modeling and analysis for a four-legged integrated indirect coupled inductor applied in a four-phase buck converter for 5 V DC to PoL application. The quantitative analysis is conducted through an equivalent steady-state inductance model. Inductor operation is investigated under different duty cycle in the circuit simulation using parameters extracted from FEM simulation. The result is then verified using a highly compact converter prototype. Finally, efficiency performance of the prototype is tested for seeing the integrated inductor practical value in industry.",

author = "Yanda Lyu and Sanusi, \{Bima Nugraha\} and Ziwei Ouyang",

year = "2023",

doi = "10.1109/APEC43580.2023.10131131",

language = "English",

isbn = "978-1-6654-7540-2",

pages = "3307--13",

booktitle = "Proceedings of 2023 IEEE Applied Power Electronics Conference and Exposition",

publisher = "IEEE",

address = "United States",

note = "38<sup>th</sup> Annual IEEE Applied Power Electronics Conference and Exposition, APEC 2023 ; Conference date: 19-03-2023 Through 23-03-2023",

}

Lyu, Y, Sanusi, BN & Ouyang, Z 2023, Modeling and Analysis of Coupling Effect in Four Legged Core for Multi-phase Buck Converter. in Proceedings of 2023 IEEE Applied Power Electronics Conference and Exposition. IEEE, pp. 3307-13, 38^th Annual IEEE Applied Power Electronics Conference and Exposition, Orlando, Florida, United States, 19/03/2023. https://doi.org/10.1109/APEC43580.2023.10131131

TY - GEN

T1 - Modeling and Analysis of Coupling Effect in Four Legged Core for Multi-phase Buck Converter

AU - Lyu, Yanda

AU - Sanusi, Bima Nugraha

AU - Ouyang, Ziwei

PY - 2023

Y1 - 2023

N2 - As a popular topology in point of load (PoL) application, multiphase buck converter always faces a trade-off problem between faster load-transient response and smaller inductor ripple current, which is solved by the coupled inductor in a number of literatures. This paper is aimed at modeling and analysis for a four-legged integrated indirect coupled inductor applied in a four-phase buck converter for 5 V DC to PoL application. The quantitative analysis is conducted through an equivalent steady-state inductance model. Inductor operation is investigated under different duty cycle in the circuit simulation using parameters extracted from FEM simulation. The result is then verified using a highly compact converter prototype. Finally, efficiency performance of the prototype is tested for seeing the integrated inductor practical value in industry.

AB - As a popular topology in point of load (PoL) application, multiphase buck converter always faces a trade-off problem between faster load-transient response and smaller inductor ripple current, which is solved by the coupled inductor in a number of literatures. This paper is aimed at modeling and analysis for a four-legged integrated indirect coupled inductor applied in a four-phase buck converter for 5 V DC to PoL application. The quantitative analysis is conducted through an equivalent steady-state inductance model. Inductor operation is investigated under different duty cycle in the circuit simulation using parameters extracted from FEM simulation. The result is then verified using a highly compact converter prototype. Finally, efficiency performance of the prototype is tested for seeing the integrated inductor practical value in industry.

U2 - 10.1109/APEC43580.2023.10131131

DO - 10.1109/APEC43580.2023.10131131

M3 - Article in proceedings

SN - 978-1-6654-7540-2

SP - 3307

EP - 3313

BT - Proceedings of 2023 IEEE Applied Power Electronics Conference and Exposition

PB - IEEE

T2 - 38<sup>th</sup> Annual IEEE Applied Power Electronics Conference and Exposition

Y2 - 19 March 2023 through 23 March 2023

ER -

Modeling and Analysis of Coupling Effect in Four Legged Core for Multi-phase Buck Converter

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