An 80-W 94.6%-efficient multi-phase multi-inductor hybrid converter

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

doi:10.1109/APEC.2019.8721952

An 80-W 94.6%-efficient multi-phase multi-inductor hybrid converter

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

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

49 Scopus citations

Abstract

This paper presents a new Multi-Phase Multi-Inductor Hybrid (MP-MIH) converter that features high efficiency at large conversion ratios, while operating the switches with duty cycles larger than state-of-the-art hybrid topologies. In this converter, the capacitors are soft-charged and soft-discharged through three inductors operated in three interleaving phases. An experimental six-level three-phase converter prototype achieves 94.6% peak efficiency and 425 W/in power density for conversions from 48V to 1V-2V at loads of up to 40A. This multi-phase multi-inductor hybrid converter architecture can be extended to any number of switched-capacitor network levels to support wide range of input and output voltages and load currents in data centers, telecommunication and other high-performance digital systems.

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	25-29
Number of pages	5
ISBN (Electronic)	9781538683309
DOIs	https://doi.org/10.1109/APEC.2019.8721952
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

Capacitance optimization
Complete soft-charging
Hybrid converter
Multi phase operation
Switched capacitor network

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

Publisher link

10.1109/APEC.2019.8721952

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Das, R., Seo, G. S., Maksimovic, D., & Le, H. P. (2019). An 80-W 94.6%-efficient multi-phase multi-inductor hybrid converter. In 34th Annual IEEE Applied Power Electronics Conference and Exposition, APEC 2019 (pp. 25-29). Article 8721952 (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.2019.8721952

An 80-W 94.6%-efficient multi-phase multi-inductor hybrid converter. / Das, Ratul; Seo, Gab Su; Maksimovic, Dragan et al.
34th Annual IEEE Applied Power Electronics Conference and Exposition, APEC 2019. Institute of Electrical and Electronics Engineers Inc., 2019. p. 25-29 8721952 (Conference Proceedings - IEEE Applied Power Electronics Conference and Exposition - APEC; Vol. 2019-March).

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

Das, R, Seo, GS, Maksimovic, D & Le, HP 2019, An 80-W 94.6%-efficient multi-phase multi-inductor hybrid converter. in 34th Annual IEEE Applied Power Electronics Conference and Exposition, APEC 2019., 8721952, Conference Proceedings - IEEE Applied Power Electronics Conference and Exposition - APEC, vol. 2019-March, Institute of Electrical and Electronics Engineers Inc., pp. 25-29, 34th Annual IEEE Applied Power Electronics Conference and Exposition, APEC 2019, Anaheim, United States, 3/17/19. https://doi.org/10.1109/APEC.2019.8721952

Das R, Seo GS, Maksimovic D, Le HP. An 80-W 94.6%-efficient multi-phase multi-inductor hybrid converter. In 34th Annual IEEE Applied Power Electronics Conference and Exposition, APEC 2019. Institute of Electrical and Electronics Engineers Inc. 2019. p. 25-29. 8721952. (Conference Proceedings - IEEE Applied Power Electronics Conference and Exposition - APEC). doi: 10.1109/APEC.2019.8721952

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title = "An 80-W 94.6\%-efficient multi-phase multi-inductor hybrid converter",

abstract = "This paper presents a new Multi-Phase Multi-Inductor Hybrid (MP-MIH) converter that features high efficiency at large conversion ratios, while operating the switches with duty cycles larger than state-of-the-art hybrid topologies. In this converter, the capacitors are soft-charged and soft-discharged through three inductors operated in three interleaving phases. An experimental six-level three-phase converter prototype achieves 94.6\% peak efficiency and 425 W/in power density for conversions from 48V to 1V-2V at loads of up to 40A. This multi-phase multi-inductor hybrid converter architecture can be extended to any number of switched-capacitor network levels to support wide range of input and output voltages and load currents in data centers, telecommunication and other high-performance digital systems.",

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N2 - This paper presents a new Multi-Phase Multi-Inductor Hybrid (MP-MIH) converter that features high efficiency at large conversion ratios, while operating the switches with duty cycles larger than state-of-the-art hybrid topologies. In this converter, the capacitors are soft-charged and soft-discharged through three inductors operated in three interleaving phases. An experimental six-level three-phase converter prototype achieves 94.6% peak efficiency and 425 W/in power density for conversions from 48V to 1V-2V at loads of up to 40A. This multi-phase multi-inductor hybrid converter architecture can be extended to any number of switched-capacitor network levels to support wide range of input and output voltages and load currents in data centers, telecommunication and other high-performance digital systems.

AB - This paper presents a new Multi-Phase Multi-Inductor Hybrid (MP-MIH) converter that features high efficiency at large conversion ratios, while operating the switches with duty cycles larger than state-of-the-art hybrid topologies. In this converter, the capacitors are soft-charged and soft-discharged through three inductors operated in three interleaving phases. An experimental six-level three-phase converter prototype achieves 94.6% peak efficiency and 425 W/in power density for conversions from 48V to 1V-2V at loads of up to 40A. This multi-phase multi-inductor hybrid converter architecture can be extended to any number of switched-capacitor network levels to support wide range of input and output voltages and load currents in data centers, telecommunication and other high-performance digital systems.

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An 80-W 94.6%-efficient multi-phase multi-inductor hybrid converter

Abstract

Publication series

Conference

Bibliographical note

Keywords

UN SDGs

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