{"id":{"repo_id":"uiuc","oai_identifier":"oai:www.ideals.illinois.edu:2142/93072"},"canonical_url":"https://search.dev.ndltd.org/etd/uiuc/oai:www.ideals.illinois.edu:2142/93072","repository":{"repo_id":"uiuc","name":"University of Illinois - Urbana-Champaign","base_url":"https://www.ideals.illinois.edu/oai-pmh"},"display":{"title":"A power supply circuit for gate driver of flying capacitor multi-level converters","abstract":"This work investigates new circuits to provide power for the gate drivers of flying capacitor multi-level (FCML) converters. FCML converters with new GaN power switches have received increased attention due to their potential to achieve high conversion efficiency and high power density. However, one of the major challenges is providing power to its gate drive circuits, as the terminals do not have constant references. The most common existing method utilizes an isolated DC/DC converter, which is bulky and energy inefficient. This thesis introduces three new techniques termed cascaded bootstrap, double charge pump and gate-driven charge pump. A new power supply circuit combining the three techniques altogether is developed and used to deliver the required gate voltage using internally available voltage nodes. The proposed circuit can help shrink the size of the overall converter, and further increase conversion efficiency. Prototypes have been built to show the functionality and simplicity of the circuit. Experimental results show that the proposed circuit is up to 3x more power efficient than the current method, at 1/10 of the cost.","abstract_html":"This work investigates new circuits to provide power for the gate drivers of flying capacitor multi-level (FCML) converters. FCML converters with new GaN power switches have received increased attention due to their potential to achieve high conversion efficiency and high power density. However, one of the major challenges is providing power to its gate drive circuits, as the terminals do not have constant references. The most common existing method utilizes an isolated DC/DC converter, which is bulky and energy inefficient. This thesis introduces three new techniques termed cascaded bootstrap, double charge pump and gate-driven charge pump. A new power supply circuit combining the three techniques altogether is developed and used to deliver the required gate voltage using internally available voltage nodes. The proposed circuit can help shrink the size of the overall converter, and further increase conversion efficiency. Prototypes have been built to show the functionality and simplicity of the circuit. Experimental results show that the proposed circuit is up to 3x more power efficient than the current method, at 1/10 of the cost.","abstract_has_math":false,"creators":["Ye, Zichao"],"institution":"University of Illinois at Urbana-Champaign","degree_name":"M.S.","degree_level":"Thesis","degree_discipline":"Electrical & Computer Engr","degree_department":null,"school":null,"contributors":["Pilawa-Podgurski, Robert"],"advisors":[],"committee_chairs":[],"committee_members":[],"year":2016,"date_issued":"2016-11-10T18:43:04Z","date_published":"2016-11-10T18:43:04Z","updated_at":"2026-07-22T22:26:35Z","subjects":["power electronics","power converter","flying capacitor multilevel converter","multi-level converter","gate driver","power supply","bootstrap","charge pump","isolated dc/dc converter"],"languages":["en"],"rights":["Copyright 2016 Zichao Ye"],"rights_urls":[],"identifier_entries":[]},"links":{"outbound_url":"http://hdl.handle.net/2142/93072","outbound_label":"Handle","outbound_source":"dc:identifier"},"metadata_groups":[{"id":"people","label":"People","entries":[{"key":"dc:contributor","label":"Contributor","values":["Pilawa-Podgurski, Robert"]},{"key":"dc:creator","label":"Author","values":["Ye, Zichao"]}]},{"id":"academic_context","label":"Academic Context","entries":[{"key":"dc:date","label":"Dc Date","values":["2016-11-10T18:43:04Z","2018-11-11T10:15:28Z","2016-07-19","2016-08"]},{"key":"dc:type","label":"Dc Type","values":["text"]},{"key":"thesis:degree_discipline","label":"Discipline","values":["Electrical & Computer Engr"]},{"key":"thesis:degree_level","label":"Degree Level","values":["Thesis"]},{"key":"thesis:degree_name","label":"Degree Name","values":["M.S."]},{"key":"thesis:institution_name","label":"Thesis Institution Name","values":["University of Illinois at Urbana-Champaign"]}]},{"id":"subjects_keywords","label":"Subjects and Keywords","entries":[{"key":"dc:subject","label":"Dc Subject","values":["power electronics","power converter","flying capacitor multilevel converter","multi-level converter","gate driver","power supply","bootstrap","charge pump","isolated dc/dc converter"]}]},{"id":"language_rights","label":"Language and Rights","entries":[{"key":"dc:language","label":"Dc Language","values":["en"]},{"key":"dc:rights","label":"Dc Rights","values":["Copyright 2016 Zichao Ye"]}]},{"id":"identifiers","label":"Identifiers","entries":[{"key":"dc:identifier","label":"Identifier","values":["http://hdl.handle.net/2142/93072"]}]},{"id":"additional","label":"Additional Metadata","entries":[{"key":"dc:description","label":"Description","values":["This work investigates new circuits to provide power for the gate drivers of flying capacitor multi-level (FCML) converters. FCML converters with new GaN power switches have received increased attention due to their potential to achieve high conversion efficiency and high power density. However, one of the major challenges is providing power to its gate drive circuits, as the terminals do not have constant references. The most common existing method utilizes an isolated DC/DC converter, which is bulky and energy inefficient. This thesis introduces three new techniques termed cascaded bootstrap, double charge pump and gate-driven charge pump. A new power supply circuit combining the three techniques altogether is developed and used to deliver the required gate voltage using internally available voltage nodes. The proposed circuit can help shrink the size of the overall converter, and further increase conversion efficiency. Prototypes have been built to show the functionality and simplicity of the circuit. Experimental results show that the proposed circuit is up to 3x more power efficient than the current method, at 1/10 of the cost.","Submission published under a 24 month embargo labeled 'U of I Access', the embargo will last until 2018-08-01","The student, Zichao Ye, accepted the attached license on 2016-07-18 at 10:58.","The student, Zichao Ye, submitted this Thesis for approval on 2016-07-18 at 11:08.","This Thesis was approved for publication on 2016-07-19 at 13:34.","DSpace SAF Submission Ingestion Package generated from Vireo submission #9984 on 2016-11-10 at 12:25:30","Made available in DSpace on 2016-11-10T18:43:04Z (GMT). No. of bitstreams: 2 YE-THESIS-2016.pdf: 15175180 bytes, checksum: 85a06b8933102c74272bb78fd64ff2ac (MD5) LICENSE.txt: 4206 bytes, checksum: a49d2e3bb479690e2f6210c6736767a8 (MD5) Previous issue date: 2016-07-19","Embargo set by: Seth Robbins for item 95495 Lift date: 2018-11-10T18:43:22Z Reason: Author requested U of Illinois access only (OA after 2yrs) in Vireo ETD system","U of I Only Restriction Lifted for Item 95495 on 2018-11-11T10:15:28Z."]},{"key":"dc:format","label":"Dc Format","values":["application/pdf"]},{"key":"dc:title","label":"Title","values":["A power supply circuit for gate driver of flying capacitor multi-level converters"]}]}],"canonical_facts":{"dc:contributor":["Pilawa-Podgurski, Robert"],"dc:creator":["Ye, Zichao"],"dc:date":["2016-11-10T18:43:04Z","2018-11-11T10:15:28Z","2016-07-19","2016-08"],"dc:description":["This work investigates new circuits to provide power for the gate drivers of flying capacitor multi-level (FCML) converters. FCML converters with new GaN power switches have received increased attention due to their potential to achieve high conversion efficiency and high power density. However, one of the major challenges is providing power to its gate drive circuits, as the terminals do not have constant references. The most common existing method utilizes an isolated DC/DC converter, which is bulky and energy inefficient. This thesis introduces three new techniques termed cascaded bootstrap, double charge pump and gate-driven charge pump. A new power supply circuit combining the three techniques altogether is developed and used to deliver the required gate voltage using internally available voltage nodes. The proposed circuit can help shrink the size of the overall converter, and further increase conversion efficiency. Prototypes have been built to show the functionality and simplicity of the circuit. Experimental results show that the proposed circuit is up to 3x more power efficient than the current method, at 1/10 of the cost.","Submission published under a 24 month embargo labeled 'U of I Access', the embargo will last until 2018-08-01","The student, Zichao Ye, accepted the attached license on 2016-07-18 at 10:58.","The student, Zichao Ye, submitted this Thesis for approval on 2016-07-18 at 11:08.","This Thesis was approved for publication on 2016-07-19 at 13:34.","DSpace SAF Submission Ingestion Package generated from Vireo submission #9984 on 2016-11-10 at 12:25:30","Made available in DSpace on 2016-11-10T18:43:04Z (GMT). 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