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Evaluation and implementation of a 5-level hybrid DC-DC converter
In this work, a hybrid voltage regulator topology is analyzed, implemented, and evaluated. The common topologies of DC-DC converters have proven to be lacking in some aspects, such as integrability for buck converters, or maximum efficiency for switched-capacitor regulators. The hybrid topology tack...
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| Format: | Thesis |
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AUC Knowledge Fountain
2015
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| _version_ | 1867613408239550464 |
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| access_status_str | Open Access |
| author | El-Sehrawy, Farid Khaled |
| author_browse | El-Sehrawy, Farid Khaled |
| author_facet | El-Sehrawy, Farid Khaled |
| author_sort | El-Sehrawy, Farid Khaled |
| collection | Thesis |
| dc_rights_str_mv | The author retains all rights with regard to copyright. The author certifies that written permission from the owner(s) of third-party copyrighted matter included in the thesis, dissertation, paper, or record of study has been obtained. The author further certifies that IRB approval has been obtained for this thesis, or that IRB approval is not necessary for this thesis. Insofar as this thesis, dissertation, paper, or record of study is an educational record as defined in the Family Educational Rights and Privacy Act (FERPA) (20 USC 1232g), the author has granted consent to disclosure of it to anyone who requests a copy. |
| description | In this work, a hybrid voltage regulator topology is analyzed, implemented, and evaluated. The common topologies of DC-DC converters have proven to be lacking in some aspects, such as integrability for buck converters, or maximum efficiency for switched-capacitor regulators. The hybrid topology tackles these shortcomings by combining the advantages of switched-capacitor and inductor-based voltage regulators. A 5-level buck converter is evaluated, implemented, and compared to other converter implementations using the same components. The 5-Level Buck converter can achieve 5 different levels, allowing it to cover 4 operation regions, each between 2 levels. Accordingly, it covers a wide range of output voltages. By reducing the voltage difference at the inductor input, the 5-level buck converter can use smaller inductor compared to both 3-level and conventional buck converters which makes it cheaper, smaller in size, and much more efficient. Simulations show proper functionality of the 5-Level topology, while putting restrictions on the inductor size, efficiency, and component footprint (or total converter area). A test PCB is implemented for verification of the functionality and experimental measurements show that for the same switching frequency and inductor size, the 5-level buck converter achieves up to 15% efficiency improvement over a conventional buck converter and a 3-level buck converter at certain output voltage ranges. Peak efficiency of 94% has been achieved by the 5-Level hybrid converter, which includes all external switching and conduction losses. The proposed hybrid topology proved to yield high conversion efficiency even in the face of component size limitations, which indicates potential benefit in using multilevel converters for several off-chip as well as on-chip applications. |
| format | Thesis |
| id | oai:fount.aucegypt.edu:etds-1186 |
| institution | American University in Cairo (Egypt) |
| last_indexed | 2026-06-10T12:35:39.635Z |
| license_str | Other — see source repository |
| provenance_str_mv | Harvested via OAI-PMH from AUC Knowledge Fountain — bepress |
| publishDate | 2015 |
| publishDateRange | 2015 |
| publishDateSort | 2015 |
| publisher | AUC Knowledge Fountain |
| publisherStr | AUC Knowledge Fountain |
| record_format | dspace |
| source_str | AUC Knowledge Fountain — bepress |
| spelling | oai:fount.aucegypt.edu:etds-1186 Evaluation and implementation of a 5-level hybrid DC-DC converter El-Sehrawy, Farid Khaled In this work, a hybrid voltage regulator topology is analyzed, implemented, and evaluated. The common topologies of DC-DC converters have proven to be lacking in some aspects, such as integrability for buck converters, or maximum efficiency for switched-capacitor regulators. The hybrid topology tackles these shortcomings by combining the advantages of switched-capacitor and inductor-based voltage regulators. A 5-level buck converter is evaluated, implemented, and compared to other converter implementations using the same components. The 5-Level Buck converter can achieve 5 different levels, allowing it to cover 4 operation regions, each between 2 levels. Accordingly, it covers a wide range of output voltages. By reducing the voltage difference at the inductor input, the 5-level buck converter can use smaller inductor compared to both 3-level and conventional buck converters which makes it cheaper, smaller in size, and much more efficient. Simulations show proper functionality of the 5-Level topology, while putting restrictions on the inductor size, efficiency, and component footprint (or total converter area). A test PCB is implemented for verification of the functionality and experimental measurements show that for the same switching frequency and inductor size, the 5-level buck converter achieves up to 15% efficiency improvement over a conventional buck converter and a 3-level buck converter at certain output voltage ranges. Peak efficiency of 94% has been achieved by the 5-Level hybrid converter, which includes all external switching and conduction losses. The proposed hybrid topology proved to yield high conversion efficiency even in the face of component size limitations, which indicates potential benefit in using multilevel converters for several off-chip as well as on-chip applications. 2015-02-01T08:00:00Z thesis application/pdf https://fount.aucegypt.edu/etds/187 https://fount.aucegypt.edu/context/etds/article/1186/viewcontent/Farid_Sehrawy_5Level_FINAL.pdf The author retains all rights with regard to copyright. The author certifies that written permission from the owner(s) of third-party copyrighted matter included in the thesis, dissertation, paper, or record of study has been obtained. The author further certifies that IRB approval has been obtained for this thesis, or that IRB approval is not necessary for this thesis. Insofar as this thesis, dissertation, paper, or record of study is an educational record as defined in the Family Educational Rights and Privacy Act (FERPA) (20 USC 1232g), the author has granted consent to disclosure of it to anyone who requests a copy. Theses and Dissertations AUC Knowledge Fountain DC-DC Converter Hybrid |
| spellingShingle | DC-DC Converter Hybrid El-Sehrawy, Farid Khaled Evaluation and implementation of a 5-level hybrid DC-DC converter |
| title | Evaluation and implementation of a 5-level hybrid DC-DC converter |
| title_full | Evaluation and implementation of a 5-level hybrid DC-DC converter |
| title_fullStr | Evaluation and implementation of a 5-level hybrid DC-DC converter |
| title_full_unstemmed | Evaluation and implementation of a 5-level hybrid DC-DC converter |
| title_short | Evaluation and implementation of a 5-level hybrid DC-DC converter |
| title_sort | evaluation and implementation of a 5 level hybrid dc dc converter |
| topic | DC-DC Converter Hybrid |
| url | https://fount.aucegypt.edu/etds/187 https://fount.aucegypt.edu/context/etds/article/1186/viewcontent/Farid_Sehrawy_5Level_FINAL.pdf |
| work_keys_str_mv | AT elsehrawyfaridkhaled evaluationandimplementationofa5levelhybriddcdcconverter |