An 80-W 94.6%-Efficient Multi-Phase Multi-Inductor Hybrid Converter

Gabsu Seo; Ratul Das; Dragan Maksimovic; Hanh-Phuc Le

doi:10.1109/APEC.2019.8721952

An 80-W 94.6%-Efficient Multi-Phase Multi-Inductor Hybrid Converter

Gabsu Seo
, Ratul Das
, Dragan Maksimovic
, Hanh-Phuc Le

Power Systems Engineering

University of Colorado Boulder

Research output: Contribution to conference › Paper › peer-review

55 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	American English
Pages	25-29
Number of pages	5
DOIs	https://doi.org/10.1109/APEC.2019.8721952 https://doi.org/10.1109/APEC.2019.8721952
State	Published - 24 May 2019
Event	34th Annual IEEE Applied Power Electronics Conference and Exposition, APEC 2019 - Anaheim, United States Duration: 17 Mar 2019 → 21 Mar 2019

Conference

Conference	34th Annual IEEE Applied Power Electronics Conference and Exposition, APEC 2019
Country/Territory	United States
City	Anaheim
Period	17/03/19 → 21/03/19

Bibliographical note

Publisher Copyright:
© 2019 IEEE.

NLR Publication Number

NREL/CP-5D00-74261

Keywords

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

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Cite this

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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.",

keywords = "Capacitance optimization, Complete soft-charging, Hybrid converter, Multi phase operation, Switched capacitor network",

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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.

KW - Capacitance optimization

KW - Complete soft-charging

KW - Hybrid converter

KW - Multi phase operation

KW - Switched capacitor network

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M3 - Paper

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

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ER -

An 80-W 94.6%-Efficient Multi-Phase Multi-Inductor Hybrid Converter

Abstract

Conference

Bibliographical note

NLR Publication Number

Keywords

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