Multiphase control for robust and complete soft-charging operation of dual inductor hybrid converter

Tianshi Xie; Ratul Das; Gab Su Seo; Dragan Maksimovic; Hanh Phuc Le

doi:10.1109/APEC.2019.8721951

Multiphase control for robust and complete soft-charging operation of dual inductor hybrid converter

Tianshi Xie, Ratul Das, Gab Su Seo, Dragan Maksimovic, Hanh Phuc Le

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

21 Scopus citations

Abstract

This paper presents a new Multiphase Dual Inductor Hybrid (MP-DIH) Converter for application in data center and telecommunication systems. The converter is based on addition of two output filter inductors to a Dickson switched-capacitor converter. The inductors are operated in multiple phases that are non-overlapped and evenly distributed over one switching cycle, completely soft-charging all flying capacitors even in the presence of practical capacitor mismatches and voltage ripples. In this converter operation, each branch of the switched-capacitor network is activated individually in one charging phase, and two interleaved inductors are employed to softly charge and discharge the capacitors to achieve high efficiency without any complex capacitor sizing or split phase operation. To verify the topology and its soft-charging advantages, a 48V-to-1.8V 20W experimental converter prototype is constructed. The converter achieves 92.4% peak efficiency for 40V-to-1.8V conversion and 92.1% peak efficiency for 48V-to-1.8V conversion at 4A load, and with 20% capacitance variations.

Original language	English (US)
Title of host publication	34th Annual IEEE Applied Power Electronics Conference and Exposition, APEC 2019
Publisher	Institute of Electrical and Electronics Engineers Inc.
Pages	1-5
Number of pages	5
ISBN (Electronic)	9781538683309
DOIs	https://doi.org/10.1109/APEC.2019.8721951
State	Published - May 24 2019
Externally published	Yes
Event	34th Annual IEEE Applied Power Electronics Conference and Exposition, APEC 2019 - Anaheim, United States Duration: Mar 17 2019 → Mar 21 2019

Publication series

Name	Conference Proceedings - IEEE Applied Power Electronics Conference and Exposition - APEC
Volume	2019-March

Conference

Conference	34th Annual IEEE Applied Power Electronics Conference and Exposition, APEC 2019
Country/Territory	United States
City	Anaheim
Period	3/17/19 → 3/21/19

Bibliographical note

Publisher Copyright:
© 2019 IEEE.

Keywords

Complete soft-charging
Hybrid converter
Multiphase operation
Switched capacitor network

Publisher link

10.1109/APEC.2019.8721951

Find It

Find It at U of M Libraries

Cite this

Xie, T., Das, R., Seo, G. S., Maksimovic, D., & Le, H. P. (2019). Multiphase control for robust and complete soft-charging operation of dual inductor hybrid converter. In 34th Annual IEEE Applied Power Electronics Conference and Exposition, APEC 2019 (pp. 1-5). Article 8721951 (Conference Proceedings - IEEE Applied Power Electronics Conference and Exposition - APEC; Vol. 2019-March). Institute of Electrical and Electronics Engineers Inc.. https://doi.org/10.1109/APEC.2019.8721951

Multiphase control for robust and complete soft-charging operation of dual inductor hybrid converter. / Xie, Tianshi; Das, Ratul; Seo, Gab Su et al.
34th Annual IEEE Applied Power Electronics Conference and Exposition, APEC 2019. Institute of Electrical and Electronics Engineers Inc., 2019. p. 1-5 8721951 (Conference Proceedings - IEEE Applied Power Electronics Conference and Exposition - APEC; Vol. 2019-March).

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

Xie, T, Das, R, Seo, GS, Maksimovic, D & Le, HP 2019, Multiphase control for robust and complete soft-charging operation of dual inductor hybrid converter. in 34th Annual IEEE Applied Power Electronics Conference and Exposition, APEC 2019., 8721951, Conference Proceedings - IEEE Applied Power Electronics Conference and Exposition - APEC, vol. 2019-March, Institute of Electrical and Electronics Engineers Inc., pp. 1-5, 34th Annual IEEE Applied Power Electronics Conference and Exposition, APEC 2019, Anaheim, United States, 3/17/19. https://doi.org/10.1109/APEC.2019.8721951

Xie T, Das R, Seo GS, Maksimovic D, Le HP. Multiphase control for robust and complete soft-charging operation of dual inductor hybrid converter. In 34th Annual IEEE Applied Power Electronics Conference and Exposition, APEC 2019. Institute of Electrical and Electronics Engineers Inc. 2019. p. 1-5. 8721951. (Conference Proceedings - IEEE Applied Power Electronics Conference and Exposition - APEC). doi: 10.1109/APEC.2019.8721951

Xie, Tianshi ; Das, Ratul ; Seo, Gab Su et al. / Multiphase control for robust and complete soft-charging operation of dual inductor hybrid converter. 34th Annual IEEE Applied Power Electronics Conference and Exposition, APEC 2019. Institute of Electrical and Electronics Engineers Inc., 2019. pp. 1-5 (Conference Proceedings - IEEE Applied Power Electronics Conference and Exposition - APEC).

@inproceedings{7f6165a50b5d42f196d597f417f5d66e,

title = "Multiphase control for robust and complete soft-charging operation of dual inductor hybrid converter",

abstract = "This paper presents a new Multiphase Dual Inductor Hybrid (MP-DIH) Converter for application in data center and telecommunication systems. The converter is based on addition of two output filter inductors to a Dickson switched-capacitor converter. The inductors are operated in multiple phases that are non-overlapped and evenly distributed over one switching cycle, completely soft-charging all flying capacitors even in the presence of practical capacitor mismatches and voltage ripples. In this converter operation, each branch of the switched-capacitor network is activated individually in one charging phase, and two interleaved inductors are employed to softly charge and discharge the capacitors to achieve high efficiency without any complex capacitor sizing or split phase operation. To verify the topology and its soft-charging advantages, a 48V-to-1.8V 20W experimental converter prototype is constructed. The converter achieves 92.4% peak efficiency for 40V-to-1.8V conversion and 92.1% peak efficiency for 48V-to-1.8V conversion at 4A load, and with 20% capacitance variations.",

keywords = "Complete soft-charging, Hybrid converter, Multiphase operation, Switched capacitor network",

author = "Tianshi Xie and Ratul Das and Seo, {Gab Su} and Dragan Maksimovic and Le, {Hanh Phuc}",

note = "Publisher Copyright: {\textcopyright} 2019 IEEE.; 34th Annual IEEE Applied Power Electronics Conference and Exposition, APEC 2019 ; Conference date: 17-03-2019 Through 21-03-2019",

year = "2019",

month = may,

day = "24",

doi = "10.1109/APEC.2019.8721951",

language = "English (US)",

series = "Conference Proceedings - IEEE Applied Power Electronics Conference and Exposition - APEC",

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

pages = "1--5",

booktitle = "34th Annual IEEE Applied Power Electronics Conference and Exposition, APEC 2019",

}

TY - GEN

T1 - Multiphase control for robust and complete soft-charging operation of dual inductor hybrid converter

AU - Xie, Tianshi

AU - Das, Ratul

AU - Seo, Gab Su

AU - Maksimovic, Dragan

AU - Le, Hanh Phuc

PY - 2019/5/24

Y1 - 2019/5/24

N2 - This paper presents a new Multiphase Dual Inductor Hybrid (MP-DIH) Converter for application in data center and telecommunication systems. The converter is based on addition of two output filter inductors to a Dickson switched-capacitor converter. The inductors are operated in multiple phases that are non-overlapped and evenly distributed over one switching cycle, completely soft-charging all flying capacitors even in the presence of practical capacitor mismatches and voltage ripples. In this converter operation, each branch of the switched-capacitor network is activated individually in one charging phase, and two interleaved inductors are employed to softly charge and discharge the capacitors to achieve high efficiency without any complex capacitor sizing or split phase operation. To verify the topology and its soft-charging advantages, a 48V-to-1.8V 20W experimental converter prototype is constructed. The converter achieves 92.4% peak efficiency for 40V-to-1.8V conversion and 92.1% peak efficiency for 48V-to-1.8V conversion at 4A load, and with 20% capacitance variations.

AB - This paper presents a new Multiphase Dual Inductor Hybrid (MP-DIH) Converter for application in data center and telecommunication systems. The converter is based on addition of two output filter inductors to a Dickson switched-capacitor converter. The inductors are operated in multiple phases that are non-overlapped and evenly distributed over one switching cycle, completely soft-charging all flying capacitors even in the presence of practical capacitor mismatches and voltage ripples. In this converter operation, each branch of the switched-capacitor network is activated individually in one charging phase, and two interleaved inductors are employed to softly charge and discharge the capacitors to achieve high efficiency without any complex capacitor sizing or split phase operation. To verify the topology and its soft-charging advantages, a 48V-to-1.8V 20W experimental converter prototype is constructed. The converter achieves 92.4% peak efficiency for 40V-to-1.8V conversion and 92.1% peak efficiency for 48V-to-1.8V conversion at 4A load, and with 20% capacitance variations.

KW - Complete soft-charging

KW - Hybrid converter

KW - Multiphase operation

KW - Switched capacitor network

UR - http://www.scopus.com/inward/record.url?scp=85067130556&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=85067130556&partnerID=8YFLogxK

U2 - 10.1109/APEC.2019.8721951

DO - 10.1109/APEC.2019.8721951

M3 - Conference contribution

AN - SCOPUS:85067130556

T3 - Conference Proceedings - IEEE Applied Power Electronics Conference and Exposition - APEC

SP - 1

EP - 5

BT - 34th Annual IEEE Applied Power Electronics Conference and Exposition, APEC 2019

PB - Institute of Electrical and Electronics Engineers Inc.

T2 - 34th Annual IEEE Applied Power Electronics Conference and Exposition, APEC 2019

Y2 - 17 March 2019 through 21 March 2019

ER -

Multiphase control for robust and complete soft-charging operation of dual inductor hybrid converter

Abstract

Publication series

Conference

Bibliographical note

Keywords

Publisher link

Find It

Other files and links

Fingerprint

Cite this