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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 3 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.

Authors:
 [1];  [2];  [1];  [1]
  1. University of Colorado
  2. National Renewable Energy Laboratory (NREL), Golden, CO (United States)
Publication Date:
Research Org.:
National Renewable Energy Lab. (NREL), Golden, CO (United States)
Sponsoring Org.:
USDOE Office of Energy Efficiency and Renewable Energy (EERE)
OSTI Identifier:
1531143
Report Number(s):
NREL/CP-5D00-74261
DOE Contract Number:  
AC36-08GO28308
Resource Type:
Conference
Resource Relation:
Conference: Presented at the 2019 IEEE Applied Power Electronics Conference and Exposition (APEC), 17-21 March 2019, Anaheim, California
Country of Publication:
United States
Language:
English
Subject:
24 POWER TRANSMISSION AND DISTRIBUTION; hybrid converter; complete soft-charging; switched capacitor network; capacitance optimization; multi phase operation

Citation Formats

Das, Ratul, Seo, Gabsu, Maksimovic, Dragan, and Le, Hanh-Phuc. An 80-W 94.6%-Efficient Multi-Phase Multi-Inductor Hybrid Converter. United States: N. p., 2019. Web. doi:10.1109/APEC.2019.8721952.
Das, Ratul, Seo, Gabsu, Maksimovic, Dragan, & Le, Hanh-Phuc. An 80-W 94.6%-Efficient Multi-Phase Multi-Inductor Hybrid Converter. United States. doi:10.1109/APEC.2019.8721952.
Das, Ratul, Seo, Gabsu, Maksimovic, Dragan, and Le, Hanh-Phuc. Mon . "An 80-W 94.6%-Efficient Multi-Phase Multi-Inductor Hybrid Converter". United States. doi:10.1109/APEC.2019.8721952.
@article{osti_1531143,
title = {An 80-W 94.6%-Efficient Multi-Phase Multi-Inductor Hybrid Converter},
author = {Das, Ratul and Seo, Gabsu and Maksimovic, Dragan and Le, Hanh-Phuc},
abstractNote = {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 3 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.},
doi = {10.1109/APEC.2019.8721952},
journal = {},
number = ,
volume = ,
place = {United States},
year = {2019},
month = {5}
}

Conference:
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