{"id":"https://openalex.org/W4410492892","doi":"https://doi.org/10.1109/cicc63670.2025.10983352","title":"An Inductor-First Hybrid Buck-Boost Converter Featuring Seamless Single-Mode Operation, 97.2% Peak Efficiency, and 565 mA/mm <sup>3</sup> Current Density with Ultra-Compact 1 mm <sup>3</sup> -Volume Inductor","display_name":"An Inductor-First Hybrid Buck-Boost Converter Featuring Seamless Single-Mode Operation, 97.2% Peak Efficiency, and 565 mA/mm <sup>3</sup> Current Density with Ultra-Compact 1 mm <sup>3</sup> -Volume Inductor","publication_year":2025,"publication_date":"2025-04-13","ids":{"openalex":"https://openalex.org/W4410492892","doi":"https://doi.org/10.1109/cicc63670.2025.10983352"},"language":"en","primary_location":{"id":"doi:10.1109/cicc63670.2025.10983352","is_oa":false,"landing_page_url":"https://doi.org/10.1109/cicc63670.2025.10983352","pdf_url":null,"source":null,"license":null,"license_id":null,"version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"2025 IEEE Custom Integrated Circuits Conference (CICC)","raw_type":"proceedings-article"},"type":"article","indexed_in":["crossref"],"open_access":{"is_oa":false,"oa_status":"closed","oa_url":null,"any_repository_has_fulltext":false},"authorships":[{"author_position":"first","author":{"id":"https://openalex.org/A5101918710","display_name":"Hyunjun Park","orcid":"https://orcid.org/0000-0002-9642-3504"},"institutions":[{"id":"https://openalex.org/I197347611","display_name":"Korea University","ror":"https://ror.org/047dqcg40","country_code":"KR","type":"education","lineage":["https://openalex.org/I197347611"]}],"countries":["KR"],"is_corresponding":true,"raw_author_name":"Hyunjun Park","raw_affiliation_strings":["Korea University,Seoul,Korea"],"affiliations":[{"raw_affiliation_string":"Korea University,Seoul,Korea","institution_ids":["https://openalex.org/I197347611"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5101679627","display_name":"Yunho Lee","orcid":"https://orcid.org/0009-0004-5664-8209"},"institutions":[{"id":"https://openalex.org/I197347611","display_name":"Korea University","ror":"https://ror.org/047dqcg40","country_code":"KR","type":"education","lineage":["https://openalex.org/I197347611"]}],"countries":["KR"],"is_corresponding":false,"raw_author_name":"Yunho Lee","raw_affiliation_strings":["Korea University,Seoul,Korea"],"affiliations":[{"raw_affiliation_string":"Korea University,Seoul,Korea","institution_ids":["https://openalex.org/I197347611"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5100343622","display_name":"Minsu Kim","orcid":"https://orcid.org/0000-0002-3590-0290"},"institutions":[{"id":"https://openalex.org/I197347611","display_name":"Korea University","ror":"https://ror.org/047dqcg40","country_code":"KR","type":"education","lineage":["https://openalex.org/I197347611"]}],"countries":["KR"],"is_corresponding":false,"raw_author_name":"Minsu Kim","raw_affiliation_strings":["Korea University,Seoul,Korea"],"affiliations":[{"raw_affiliation_string":"Korea University,Seoul,Korea","institution_ids":["https://openalex.org/I197347611"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5035934964","display_name":"Woojoong Jung","orcid":"https://orcid.org/0000-0002-6150-1410"},"institutions":[{"id":"https://openalex.org/I197347611","display_name":"Korea University","ror":"https://ror.org/047dqcg40","country_code":"KR","type":"education","lineage":["https://openalex.org/I197347611"]}],"countries":["KR"],"is_corresponding":false,"raw_author_name":"Woojoong Jung","raw_affiliation_strings":["Korea University,Seoul,Korea"],"affiliations":[{"raw_affiliation_string":"Korea University,Seoul,Korea","institution_ids":["https://openalex.org/I197347611"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5101430508","display_name":"Hong Seok Kim","orcid":"https://orcid.org/0000-0003-2814-6602"},"institutions":[{"id":"https://openalex.org/I197347611","display_name":"Korea University","ror":"https://ror.org/047dqcg40","country_code":"KR","type":"education","lineage":["https://openalex.org/I197347611"]}],"countries":["KR"],"is_corresponding":false,"raw_author_name":"Hongseok Kim","raw_affiliation_strings":["Korea University,Seoul,Korea"],"affiliations":[{"raw_affiliation_string":"Korea University,Seoul,Korea","institution_ids":["https://openalex.org/I197347611"]}]},{"author_position":"last","author":{"id":"https://openalex.org/A5042373004","display_name":"Hyung\u2010Min Lee","orcid":"https://orcid.org/0000-0003-1191-3553"},"institutions":[{"id":"https://openalex.org/I197347611","display_name":"Korea University","ror":"https://ror.org/047dqcg40","country_code":"KR","type":"education","lineage":["https://openalex.org/I197347611"]}],"countries":["KR"],"is_corresponding":false,"raw_author_name":"Hyung-Min Lee","raw_affiliation_strings":["Korea University,Seoul,Korea"],"affiliations":[{"raw_affiliation_string":"Korea University,Seoul,Korea","institution_ids":["https://openalex.org/I197347611"]}]}],"institutions":[],"countries_distinct_count":1,"institutions_distinct_count":6,"corresponding_author_ids":["https://openalex.org/A5101918710"],"corresponding_institution_ids":["https://openalex.org/I197347611"],"apc_list":null,"apc_paid":null,"fwci":0.7428,"has_fulltext":false,"cited_by_count":1,"citation_normalized_percentile":{"value":0.72091707,"is_in_top_1_percent":false,"is_in_top_10_percent":false},"cited_by_percentile_year":{"min":91,"max":95},"biblio":{"volume":null,"issue":null,"first_page":"1","last_page":"3"},"is_retracted":false,"is_paratext":false,"is_xpac":false,"primary_topic":{"id":"https://openalex.org/T10361","display_name":"Silicon Carbide Semiconductor Technologies","score":0.9962999820709229,"subfield":{"id":"https://openalex.org/subfields/2208","display_name":"Electrical and Electronic Engineering"},"field":{"id":"https://openalex.org/fields/22","display_name":"Engineering"},"domain":{"id":"https://openalex.org/domains/3","display_name":"Physical Sciences"}},"topics":[{"id":"https://openalex.org/T10361","display_name":"Silicon Carbide Semiconductor Technologies","score":0.9962999820709229,"subfield":{"id":"https://openalex.org/subfields/2208","display_name":"Electrical and Electronic Engineering"},"field":{"id":"https://openalex.org/fields/22","display_name":"Engineering"},"domain":{"id":"https://openalex.org/domains/3","display_name":"Physical Sciences"}},{"id":"https://openalex.org/T10175","display_name":"Advanced DC-DC Converters","score":0.9947999715805054,"subfield":{"id":"https://openalex.org/subfields/2208","display_name":"Electrical and Electronic Engineering"},"field":{"id":"https://openalex.org/fields/22","display_name":"Engineering"},"domain":{"id":"https://openalex.org/domains/3","display_name":"Physical Sciences"}},{"id":"https://openalex.org/T10099","display_name":"GaN-based semiconductor devices and materials","score":0.9933000206947327,"subfield":{"id":"https://openalex.org/subfields/3104","display_name":"Condensed Matter Physics"},"field":{"id":"https://openalex.org/fields/31","display_name":"Physics and Astronomy"},"domain":{"id":"https://openalex.org/domains/3","display_name":"Physical Sciences"}}],"keywords":[{"id":"https://openalex.org/keywords/inductor","display_name":"Inductor","score":0.8633068799972534},{"id":"https://openalex.org/keywords/current-density","display_name":"Current density","score":0.5916568636894226},{"id":"https://openalex.org/keywords/current","display_name":"Current (fluid)","score":0.5081396102905273},{"id":"https://openalex.org/keywords/optoelectronics","display_name":"Optoelectronics","score":0.49492448568344116},{"id":"https://openalex.org/keywords/physics","display_name":"Physics","score":0.49359381198883057},{"id":"https://openalex.org/keywords/buck-converter","display_name":"Buck converter","score":0.47794583439826965},{"id":"https://openalex.org/keywords/volume","display_name":"Volume (thermodynamics)","score":0.46549686789512634},{"id":"https://openalex.org/keywords/mode","display_name":"Mode (computer interface)","score":0.436564564704895},{"id":"https://openalex.org/keywords/materials-science","display_name":"Materials science","score":0.4341225028038025},{"id":"https://openalex.org/keywords/electrical-engineering","display_name":"Electrical engineering","score":0.4128909707069397},{"id":"https://openalex.org/keywords/computer-science","display_name":"Computer science","score":0.2507970333099365},{"id":"https://openalex.org/keywords/voltage","display_name":"Voltage","score":0.24249911308288574},{"id":"https://openalex.org/keywords/engineering","display_name":"Engineering","score":0.17443609237670898},{"id":"https://openalex.org/keywords/thermodynamics","display_name":"Thermodynamics","score":0.06983432173728943}],"concepts":[{"id":"https://openalex.org/C144534570","wikidata":"https://www.wikidata.org/wiki/Q5325","display_name":"Inductor","level":3,"score":0.8633068799972534},{"id":"https://openalex.org/C207740977","wikidata":"https://www.wikidata.org/wiki/Q234072","display_name":"Current density","level":2,"score":0.5916568636894226},{"id":"https://openalex.org/C148043351","wikidata":"https://www.wikidata.org/wiki/Q4456944","display_name":"Current (fluid)","level":2,"score":0.5081396102905273},{"id":"https://openalex.org/C49040817","wikidata":"https://www.wikidata.org/wiki/Q193091","display_name":"Optoelectronics","level":1,"score":0.49492448568344116},{"id":"https://openalex.org/C121332964","wikidata":"https://www.wikidata.org/wiki/Q413","display_name":"Physics","level":0,"score":0.49359381198883057},{"id":"https://openalex.org/C150818752","wikidata":"https://www.wikidata.org/wiki/Q83804","display_name":"Buck converter","level":3,"score":0.47794583439826965},{"id":"https://openalex.org/C20556612","wikidata":"https://www.wikidata.org/wiki/Q4469374","display_name":"Volume (thermodynamics)","level":2,"score":0.46549686789512634},{"id":"https://openalex.org/C48677424","wikidata":"https://www.wikidata.org/wiki/Q6888088","display_name":"Mode (computer interface)","level":2,"score":0.436564564704895},{"id":"https://openalex.org/C192562407","wikidata":"https://www.wikidata.org/wiki/Q228736","display_name":"Materials science","level":0,"score":0.4341225028038025},{"id":"https://openalex.org/C119599485","wikidata":"https://www.wikidata.org/wiki/Q43035","display_name":"Electrical engineering","level":1,"score":0.4128909707069397},{"id":"https://openalex.org/C41008148","wikidata":"https://www.wikidata.org/wiki/Q21198","display_name":"Computer science","level":0,"score":0.2507970333099365},{"id":"https://openalex.org/C165801399","wikidata":"https://www.wikidata.org/wiki/Q25428","display_name":"Voltage","level":2,"score":0.24249911308288574},{"id":"https://openalex.org/C127413603","wikidata":"https://www.wikidata.org/wiki/Q11023","display_name":"Engineering","level":0,"score":0.17443609237670898},{"id":"https://openalex.org/C97355855","wikidata":"https://www.wikidata.org/wiki/Q11473","display_name":"Thermodynamics","level":1,"score":0.06983432173728943},{"id":"https://openalex.org/C111919701","wikidata":"https://www.wikidata.org/wiki/Q9135","display_name":"Operating system","level":1,"score":0.0},{"id":"https://openalex.org/C62520636","wikidata":"https://www.wikidata.org/wiki/Q944","display_name":"Quantum mechanics","level":1,"score":0.0}],"mesh":[],"locations_count":1,"locations":[{"id":"doi:10.1109/cicc63670.2025.10983352","is_oa":false,"landing_page_url":"https://doi.org/10.1109/cicc63670.2025.10983352","pdf_url":null,"source":null,"license":null,"license_id":null,"version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"2025 IEEE Custom Integrated Circuits Conference (CICC)","raw_type":"proceedings-article"}],"best_oa_location":null,"sustainable_development_goals":[{"display_name":"Affordable and clean energy","score":0.6700000166893005,"id":"https://metadata.un.org/sdg/7"}],"awards":[],"funders":[],"has_content":{"grobid_xml":false,"pdf":false},"content_urls":null,"referenced_works_count":10,"referenced_works":["https://openalex.org/W2793909808","https://openalex.org/W2966538813","https://openalex.org/W3015909866","https://openalex.org/W3186561861","https://openalex.org/W4313476520","https://openalex.org/W4392746377","https://openalex.org/W4392776391","https://openalex.org/W4396918358","https://openalex.org/W4403279513","https://openalex.org/W6734907101"],"related_works":["https://openalex.org/W2027630214","https://openalex.org/W4405446272","https://openalex.org/W2798896958","https://openalex.org/W2080420513","https://openalex.org/W2168095168","https://openalex.org/W2006863447","https://openalex.org/W2537886641","https://openalex.org/W2130876290","https://openalex.org/W2084159017","https://openalex.org/W2611979962"],"abstract_inverted_index":{"To":[0],"manage":[1],"power":[2,75],"on":[3],"mobile":[4],"devices":[5],"using":[6],"batteries,":[7],"a":[8,26,40,91,120,153],"buck-boost":[9,99],"converter":[10,37,63],"has":[11],"been":[12],"widely":[13],"exploited":[14],"with":[15,83,125,156],"growing":[16],"market":[17],"demand":[18],"for":[19,68,89,130],"its":[20,49],"step-up":[21],"and":[22,60,73],"step-down":[23],"functions.":[24],"Although":[25],"supply":[27],"voltage":[28,43,50,146],"<tex":[29,44,53,111,122,135,139,149],"xmlns:mml=\"http://www.w3.org/1998/Math/MathML\"":[30,45,54,95,112,123,136,140,150],"xmlns:xlink=\"http://www.w3.org/1999/xlink\">$(V_{\\text{IN}}=2.9-4.2\\mathrm{V})$</tex>":[31],"from":[32,102],"the":[33,36,66,117],"battery":[34],"varies,":[35],"can":[38],"provide":[39],"target":[41],"output":[42],"xmlns:xlink=\"http://www.w3.org/1999/xlink\">$(V_{OUT}=3.4V)$</tex>":[46],"by":[47],"adjusting":[48],"conversion":[51],"ratio":[52],"xmlns:xlink=\"http://www.w3.org/1999/xlink\">$\\left(M=V_{\\text{OUT}}":[55],"/":[56],"V_{\\text{IN}}\\right)$</tex>":[57],"between":[58],"0.8":[59],"1.2.":[61],"This":[62],"highly":[64],"requires":[65],"breakthrough":[67],"achieving":[69],"both":[70],"high":[71,74,108,157],"efficiency":[72,118],"density.":[76],"However,":[77],"these":[78],"goals":[79],"are":[80],"at":[81],"odds":[82],"inductor's":[84],"large":[85,134],"DC":[86],"resistance":[87],"(DCR)":[88],"employing":[90],"compact":[92],"inductor":[93,109,155],"(<tex":[94],"xmlns:xlink=\"http://www.w3.org/1999/xlink\">$L$</tex>).":[96],"The":[97],"conventional":[98],"topology":[100],"suffers":[101],"significant":[103],"conduction":[104],"loss":[105],"due":[106,143],"to":[107,144],"current":[110],"xmlns:xlink=\"http://www.w3.org/1999/xlink\">$(l_{\\mathrm{L}})$</tex>,":[113],"which":[114],"further":[115],"degrades":[116],"when":[119],"smaller":[121],"xmlns:xlink=\"http://www.w3.org/1999/xlink\">$L$</tex>":[124,151],"higher":[126],"DCR":[127],"is":[128],"used":[129],"compact-sized":[131],"systems.":[132],"Moreover,":[133],"xmlns:xlink=\"http://www.w3.org/1999/xlink\">$I_{L}$</tex>":[137],"ripple":[138],"xmlns:xlink=\"http://www.w3.org/1999/xlink\">$(\\Delta":[141],"l_{\\mathrm{L}})$</tex>":[142],"wide":[145],"swing":[147],"across":[148],"necessitates":[152],"bulky":[154],"inductance.":[158]},"counts_by_year":[{"year":2025,"cited_by_count":1}],"updated_date":"2025-11-23T05:10:03.516525","created_date":"2025-05-20T00:00:00"}