Fully integrated multi-phase buck converter with coupled air core inductors
Abstract
A multi-phase buck switching converter having grouped pairs of phases, each phase using two magnetically coupled air-core inductors. For each group, a first driver circuit controlling switching of a first power transistor switching circuit coupled to a first air-core inductor output for driving an output load at the first phase. A second driver circuit controlling switching of a second power transistor switching circuit coupled to a second air-core inductor output for driving said output load at the second phase. The first and second phases are spaced 180° apart. The coupled air-core inductors per group of such orientation, separation distance and mutual inductance polarity relative to each other such that magnetic coupling between the two or more inductors at each phase results in a net increase in effective inductance per unit volume. Each air-core inductor is a metal slab of defined length, height and thickness formed using back-end-of-line semiconductor manufacturing process.
- Inventors:
- Issue Date:
- Research Org.:
- International Business Machines Corp., Armonk, NY (United States)
- Sponsoring Org.:
- USDOE
- OSTI Identifier:
- 1600398
- Patent Number(s):
- 10505456
- Application Number:
- 16/124,334
- Assignee:
- International Business Machines Corporation (Armonk, NY)
- Patent Classifications (CPCs):
-
H - ELECTRICITY H01 - BASIC ELECTRIC ELEMENTS H01F - MAGNETS
H - ELECTRICITY H02 - GENERATION H02M - APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS
- DOE Contract Number:
- 95083063
- Resource Type:
- Patent
- Resource Relation:
- Patent File Date: 09/07/2018
- Country of Publication:
- United States
- Language:
- English
Citation Formats
Zhang, Xin, Takken, Todd E., Wang, Naigang, and Chang, Leland. Fully integrated multi-phase buck converter with coupled air core inductors. United States: N. p., 2019.
Web.
Zhang, Xin, Takken, Todd E., Wang, Naigang, & Chang, Leland. Fully integrated multi-phase buck converter with coupled air core inductors. United States.
Zhang, Xin, Takken, Todd E., Wang, Naigang, and Chang, Leland. Tue .
"Fully integrated multi-phase buck converter with coupled air core inductors". United States. https://www.osti.gov/servlets/purl/1600398.
@article{osti_1600398,
title = {Fully integrated multi-phase buck converter with coupled air core inductors},
author = {Zhang, Xin and Takken, Todd E. and Wang, Naigang and Chang, Leland},
abstractNote = {A multi-phase buck switching converter having grouped pairs of phases, each phase using two magnetically coupled air-core inductors. For each group, a first driver circuit controlling switching of a first power transistor switching circuit coupled to a first air-core inductor output for driving an output load at the first phase. A second driver circuit controlling switching of a second power transistor switching circuit coupled to a second air-core inductor output for driving said output load at the second phase. The first and second phases are spaced 180° apart. The coupled air-core inductors per group of such orientation, separation distance and mutual inductance polarity relative to each other such that magnetic coupling between the two or more inductors at each phase results in a net increase in effective inductance per unit volume. Each air-core inductor is a metal slab of defined length, height and thickness formed using back-end-of-line semiconductor manufacturing process.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {2019},
month = {12}
}
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