On-Chip Transformer Design and Modeling for Fully Integrated Isolated DC/DC Converters
abstract: Isolated DC/DC converters are used to provide electrical isolation between two supply domain systems. A fully integrated isolated DC/DC converter having no board-level components and fabricated using standard integrated circuits (IC) process is highly desirable in order to increase the sys...
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2014
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Online Access: | http://hdl.handle.net/2286/R.I.25857 |
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ndltd-asu.edu-item-258572018-06-22T03:05:22Z On-Chip Transformer Design and Modeling for Fully Integrated Isolated DC/DC Converters abstract: Isolated DC/DC converters are used to provide electrical isolation between two supply domain systems. A fully integrated isolated DC/DC converter having no board-level components and fabricated using standard integrated circuits (IC) process is highly desirable in order to increase the system reliability and reduce costs. The isolation between the low-voltage side and high-voltage side of the converter is realized by a transformer that transfers energy while blocking the DC loop. The resonant mode power oscillator is used to enable high efficiency power transfer. The on-chip transformer is expected to have high coil inductance, high quality factors and high coupling coefficient to reduce the loss in the oscillation. The performance of a transformer is highly dependent on the vertical structure, horizontal geometry and other indispensable structures that make it compatible with the IC process such as metal fills and patterned ground shield (PGS). With the help of three-dimensional (3-D) electro-magnetic (EM) simulation software, the 3-D transformer model is simulated and the simulation result is got with high accuracy. In this thesis an on-chip transformer for a fully integrated DC/DC converter using standard IC process is developed. Different types of transformers are modeled and simulated in HFSS. The performances are compared to select the optimum design. The effects of the additional structures including PGS and metal fills are also simulated. The transformer is tested with a network analyzer and the testing results show a good consistency with the simulation results when taking the chip traces, printed circuit board (PCB) traces, bond wires and SMA connectors into account. Dissertation/Thesis Zhao, Yao (Author) Bakkaloglu, Bertan (Advisor) Kiaei, Sayfe (Committee member) Kitchen, Jennifer (Committee member) Arizona State University (Publisher) Electrical engineering EM simulation isolation model on-chip transformer eng 60 pages Masters Thesis Electrical Engineering 2014 Masters Thesis http://hdl.handle.net/2286/R.I.25857 http://rightsstatements.org/vocab/InC/1.0/ All Rights Reserved 2014 |
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NDLTD |
language |
English |
format |
Dissertation |
sources |
NDLTD |
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Electrical engineering EM simulation isolation model on-chip transformer |
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Electrical engineering EM simulation isolation model on-chip transformer On-Chip Transformer Design and Modeling for Fully Integrated Isolated DC/DC Converters |
description |
abstract: Isolated DC/DC converters are used to provide electrical isolation between two supply domain systems. A fully integrated isolated DC/DC converter having no board-level components and fabricated using standard integrated circuits (IC) process is highly desirable in order to increase the system reliability and reduce costs. The isolation between the low-voltage side and high-voltage side of the converter is realized by a transformer that transfers energy while blocking the DC loop. The resonant mode power oscillator is used to enable high efficiency power transfer. The on-chip transformer is expected to have high coil inductance, high quality factors and high coupling coefficient to reduce the loss in the oscillation. The performance of a transformer is highly dependent on the vertical structure, horizontal geometry and other indispensable structures that make it compatible with the IC process such as metal fills and patterned ground shield (PGS). With the help of three-dimensional (3-D) electro-magnetic (EM) simulation software, the 3-D transformer model is simulated and the simulation result is got with high accuracy.
In this thesis an on-chip transformer for a fully integrated DC/DC converter using standard IC process is developed. Different types of transformers are modeled and simulated in HFSS. The performances are compared to select the optimum design. The effects of the additional structures including PGS and metal fills are also simulated. The transformer is tested with a network analyzer and the testing results show a good consistency with the simulation results when taking the chip traces, printed circuit board (PCB) traces, bond wires and SMA connectors into account. === Dissertation/Thesis === Masters Thesis Electrical Engineering 2014 |
author2 |
Zhao, Yao (Author) |
author_facet |
Zhao, Yao (Author) |
title |
On-Chip Transformer Design and Modeling for Fully Integrated Isolated DC/DC Converters |
title_short |
On-Chip Transformer Design and Modeling for Fully Integrated Isolated DC/DC Converters |
title_full |
On-Chip Transformer Design and Modeling for Fully Integrated Isolated DC/DC Converters |
title_fullStr |
On-Chip Transformer Design and Modeling for Fully Integrated Isolated DC/DC Converters |
title_full_unstemmed |
On-Chip Transformer Design and Modeling for Fully Integrated Isolated DC/DC Converters |
title_sort |
on-chip transformer design and modeling for fully integrated isolated dc/dc converters |
publishDate |
2014 |
url |
http://hdl.handle.net/2286/R.I.25857 |
_version_ |
1718700493592592384 |