skip to main content
DOE PAGES title logo U.S. Department of Energy
Office of Scientific and Technical Information

This content will become publicly available on September 17, 2020

Title: Dual Inductor Hybrid Converter for Point-of-Load Voltage Regulator Modules

Abstract

Achieving high-efficiency power conversion with high power density for large conversion ratio is crucially needed yet challenging in point-of-load applications because of increasing demands of loads. This paper presents a new hybrid converter to address this need. The converter uses two interleaved inductors for complete soft charging of flying capacitors to efficiently provide high output currents with no capacitor hard-charge loss. This dual inductor hybrid (DIH) converter features a smaller number of switches and more effective switch utilization than a recently reported Hybrid Dickson converter, yielding substantially less switch losses represented by smaller volt-ampere products and smaller equivalent output resistance. Converter operation principle is analyzed in detail to confirm the feasibility and benefits, and design considerations are provided to identify a practical design process. Experimental results verify the converter's operation principles and advantages with a 300-kHz 20-W prototype achieving 95.02% peak efficiency and 225 W/in3 power density. Its advantages and performance promise a good candidate point-of-load converter architecture for demanding applications, such as in data centers, telecommunication, and high-performance digital systems.

Authors:
 [1];  [2];  [2]
  1. National Renewable Energy Lab. (NREL), Golden, CO (United States)
  2. Univ. of Colorado, Boulder, 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), Solar Energy Technologies Office (EE-4S)
OSTI Identifier:
1566804
Report Number(s):
NREL/JA-5D00-74628
Journal ID: ISSN 0093-9994
Grant/Contract Number:  
AC36-08GO28308
Resource Type:
Accepted Manuscript
Journal Name:
IEEE Transactions on Industry Applications
Additional Journal Information:
Journal Name: IEEE Transactions on Industry Applications; Journal ID: ISSN 0093-9994
Publisher:
IEEE
Country of Publication:
United States
Language:
English
Subject:
24 POWER TRANSMISSION AND DISTRIBUTION; hybrid converter; power density; point-of-load; GaN devices; soft charging; switched-capacitor converter; inductor current sharing

Citation Formats

Seo, Gabsu, Das, Ratul, and Le, Hanh-Phuc. Dual Inductor Hybrid Converter for Point-of-Load Voltage Regulator Modules. United States: N. p., 2019. Web. doi:10.1109/TIA.2019.2941945.
Seo, Gabsu, Das, Ratul, & Le, Hanh-Phuc. Dual Inductor Hybrid Converter for Point-of-Load Voltage Regulator Modules. United States. doi:10.1109/TIA.2019.2941945.
Seo, Gabsu, Das, Ratul, and Le, Hanh-Phuc. Tue . "Dual Inductor Hybrid Converter for Point-of-Load Voltage Regulator Modules". United States. doi:10.1109/TIA.2019.2941945.
@article{osti_1566804,
title = {Dual Inductor Hybrid Converter for Point-of-Load Voltage Regulator Modules},
author = {Seo, Gabsu and Das, Ratul and Le, Hanh-Phuc},
abstractNote = {Achieving high-efficiency power conversion with high power density for large conversion ratio is crucially needed yet challenging in point-of-load applications because of increasing demands of loads. This paper presents a new hybrid converter to address this need. The converter uses two interleaved inductors for complete soft charging of flying capacitors to efficiently provide high output currents with no capacitor hard-charge loss. This dual inductor hybrid (DIH) converter features a smaller number of switches and more effective switch utilization than a recently reported Hybrid Dickson converter, yielding substantially less switch losses represented by smaller volt-ampere products and smaller equivalent output resistance. Converter operation principle is analyzed in detail to confirm the feasibility and benefits, and design considerations are provided to identify a practical design process. Experimental results verify the converter's operation principles and advantages with a 300-kHz 20-W prototype achieving 95.02% peak efficiency and 225 W/in3 power density. Its advantages and performance promise a good candidate point-of-load converter architecture for demanding applications, such as in data centers, telecommunication, and high-performance digital systems.},
doi = {10.1109/TIA.2019.2941945},
journal = {IEEE Transactions on Industry Applications},
number = ,
volume = ,
place = {United States},
year = {2019},
month = {9}
}

Journal Article:
Free Publicly Available Full Text
This content will become publicly available on September 17, 2020
Publisher's Version of Record

Save / Share: