{"id":"https://openalex.org/W3134360909","doi":"https://doi.org/10.1109/isscc42613.2021.9365955","title":"33.5 A 1.25W 46.5%-Peak-Efficiency Transformer-in-Package Isolated DC-DC Converter Using Glass-Based Fan-Out Wafer-Level Packaging Achieving 50mW/mm2 Power Density","display_name":"33.5 A 1.25W 46.5%-Peak-Efficiency Transformer-in-Package Isolated DC-DC Converter Using Glass-Based Fan-Out Wafer-Level Packaging Achieving 50mW/mm2 Power Density","publication_year":2021,"publication_date":"2021-02-13","ids":{"openalex":"https://openalex.org/W3134360909","doi":"https://doi.org/10.1109/isscc42613.2021.9365955","mag":"3134360909"},"language":"en","primary_location":{"id":"doi:10.1109/isscc42613.2021.9365955","is_oa":false,"landing_page_url":"https://doi.org/10.1109/isscc42613.2021.9365955","pdf_url":null,"source":null,"license":null,"license_id":null,"version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"2021 IEEE International Solid- State Circuits Conference (ISSCC)","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/A5073798183","display_name":"Dongfang Pan","orcid":"https://orcid.org/0000-0001-9704-586X"},"institutions":[{"id":"https://openalex.org/I126520041","display_name":"University of Science and Technology of China","ror":"https://ror.org/04c4dkn09","country_code":"CN","type":"education","lineage":["https://openalex.org/I126520041","https://openalex.org/I19820366"]}],"countries":["CN"],"is_corresponding":false,"raw_author_name":"Dongfang Pan","raw_affiliation_strings":["University of Science and Technology of China, Hefei, China"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"University of Science and Technology of China, Hefei, China","institution_ids":["https://openalex.org/I126520041"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5084607178","display_name":"Guolong Li","orcid":"https://orcid.org/0000-0001-9402-5054"},"institutions":[{"id":"https://openalex.org/I126520041","display_name":"University of Science and Technology of China","ror":"https://ror.org/04c4dkn09","country_code":"CN","type":"education","lineage":["https://openalex.org/I126520041","https://openalex.org/I19820366"]}],"countries":["CN"],"is_corresponding":false,"raw_author_name":"Guolong Li","raw_affiliation_strings":["University of Science and Technology of China, Hefei, China"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"University of Science and Technology of China, Hefei, China","institution_ids":["https://openalex.org/I126520041"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5072013028","display_name":"Fangting Miao","orcid":null},"institutions":[{"id":"https://openalex.org/I126520041","display_name":"University of Science and Technology of China","ror":"https://ror.org/04c4dkn09","country_code":"CN","type":"education","lineage":["https://openalex.org/I126520041","https://openalex.org/I19820366"]}],"countries":["CN"],"is_corresponding":false,"raw_author_name":"Fangting Miao","raw_affiliation_strings":["University of Science and Technology of China, Hefei, China"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"University of Science and Technology of China, Hefei, China","institution_ids":["https://openalex.org/I126520041"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5103476318","display_name":"Biao Deng","orcid":null},"institutions":[{"id":"https://openalex.org/I126520041","display_name":"University of Science and Technology of China","ror":"https://ror.org/04c4dkn09","country_code":"CN","type":"education","lineage":["https://openalex.org/I126520041","https://openalex.org/I19820366"]}],"countries":["CN"],"is_corresponding":false,"raw_author_name":"Biao Deng","raw_affiliation_strings":["University of Science and Technology of China, Hefei, China"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"University of Science and Technology of China, Hefei, China","institution_ids":["https://openalex.org/I126520041"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5002055717","display_name":"Junying Wei","orcid":"https://orcid.org/0000-0002-5231-2888"},"institutions":[{"id":"https://openalex.org/I191208505","display_name":"Xiamen University","ror":"https://ror.org/00mcjh785","country_code":"CN","type":"education","lineage":["https://openalex.org/I191208505"]}],"countries":["CN"],"is_corresponding":false,"raw_author_name":"Junying Wei","raw_affiliation_strings":["Xiamen University, Xiamen, China"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Xiamen University, Xiamen, China","institution_ids":["https://openalex.org/I191208505"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5101795019","display_name":"Daquan Yu","orcid":"https://orcid.org/0000-0001-8065-2612"},"institutions":[{"id":"https://openalex.org/I191208505","display_name":"Xiamen University","ror":"https://ror.org/00mcjh785","country_code":"CN","type":"education","lineage":["https://openalex.org/I191208505"]}],"countries":["CN"],"is_corresponding":false,"raw_author_name":"Daquan Yu","raw_affiliation_strings":["Xiamen University, Xiamen, China"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Xiamen University, Xiamen, China","institution_ids":["https://openalex.org/I191208505"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5084722425","display_name":"Ming Liu","orcid":"https://orcid.org/0000-0002-5853-9194"},"institutions":[{"id":"https://openalex.org/I19820366","display_name":"Chinese Academy of Sciences","ror":"https://ror.org/034t30j35","country_code":"CN","type":"government","lineage":["https://openalex.org/I19820366"]},{"id":"https://openalex.org/I4210119392","display_name":"Institute of Microelectronics","ror":"https://ror.org/02s6gs133","country_code":"CN","type":"facility","lineage":["https://openalex.org/I19820366","https://openalex.org/I4210119392"]}],"countries":["CN"],"is_corresponding":false,"raw_author_name":"Ming Liu","raw_affiliation_strings":["Institute of Microelectronics of the Chinese Academy of Sciences, Beijing, China"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Institute of Microelectronics of the Chinese Academy of Sciences, Beijing, China","institution_ids":["https://openalex.org/I4210119392","https://openalex.org/I19820366"]}]},{"author_position":"last","author":{"id":"https://openalex.org/A5075157873","display_name":"Lin Cheng","orcid":"https://orcid.org/0000-0002-3285-0187"},"institutions":[{"id":"https://openalex.org/I126520041","display_name":"University of Science and Technology of China","ror":"https://ror.org/04c4dkn09","country_code":"CN","type":"education","lineage":["https://openalex.org/I126520041","https://openalex.org/I19820366"]}],"countries":["CN"],"is_corresponding":false,"raw_author_name":"Lin Cheng","raw_affiliation_strings":["University of Science and Technology of China, Hefei, China"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"University of Science and Technology of China, Hefei, China","institution_ids":["https://openalex.org/I126520041"]}]}],"institutions":[],"countries_distinct_count":1,"institutions_distinct_count":8,"corresponding_author_ids":[],"corresponding_institution_ids":[],"apc_list":null,"apc_paid":null,"fwci":2.0341,"has_fulltext":false,"cited_by_count":29,"citation_normalized_percentile":{"value":0.86607106,"is_in_top_1_percent":false,"is_in_top_10_percent":false},"cited_by_percentile_year":{"min":89,"max":99},"biblio":{"volume":null,"issue":null,"first_page":"468","last_page":"470"},"is_retracted":false,"is_paratext":false,"is_xpac":false,"primary_topic":{"id":"https://openalex.org/T11249","display_name":"Wireless Power Transfer Systems","score":0.9994000196456909,"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/T11249","display_name":"Wireless Power Transfer Systems","score":0.9994000196456909,"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":0.9991000294685364,"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/T11230","display_name":"Innovative Energy Harvesting Technologies","score":0.9926000237464905,"subfield":{"id":"https://openalex.org/subfields/2210","display_name":"Mechanical Engineering"},"field":{"id":"https://openalex.org/fields/22","display_name":"Engineering"},"domain":{"id":"https://openalex.org/domains/3","display_name":"Physical Sciences"}}],"keywords":[{"id":"https://openalex.org/keywords/transformer","display_name":"Transformer","score":0.6371760964393616},{"id":"https://openalex.org/keywords/electromagnetic-coil","display_name":"Electromagnetic coil","score":0.6329395771026611},{"id":"https://openalex.org/keywords/electrical-engineering","display_name":"Electrical engineering","score":0.6155821681022644},{"id":"https://openalex.org/keywords/capacitor","display_name":"Capacitor","score":0.5998736619949341},{"id":"https://openalex.org/keywords/galvanic-isolation","display_name":"Galvanic isolation","score":0.5886942148208618},{"id":"https://openalex.org/keywords/inductor","display_name":"Inductor","score":0.489199161529541},{"id":"https://openalex.org/keywords/materials-science","display_name":"Materials science","score":0.4876081049442291},{"id":"https://openalex.org/keywords/converters","display_name":"Converters","score":0.47350767254829407},{"id":"https://openalex.org/keywords/power-density","display_name":"Power density","score":0.4196591079235077},{"id":"https://openalex.org/keywords/voltage","display_name":"Voltage","score":0.41050955653190613},{"id":"https://openalex.org/keywords/electronic-engineering","display_name":"Electronic engineering","score":0.3977067470550537},{"id":"https://openalex.org/keywords/engineering","display_name":"Engineering","score":0.32721006870269775},{"id":"https://openalex.org/keywords/power","display_name":"Power (physics)","score":0.21334674954414368},{"id":"https://openalex.org/keywords/physics","display_name":"Physics","score":0.09052956104278564}],"concepts":[{"id":"https://openalex.org/C66322947","wikidata":"https://www.wikidata.org/wiki/Q11658","display_name":"Transformer","level":3,"score":0.6371760964393616},{"id":"https://openalex.org/C30403606","wikidata":"https://www.wikidata.org/wiki/Q2981904","display_name":"Electromagnetic coil","level":2,"score":0.6329395771026611},{"id":"https://openalex.org/C119599485","wikidata":"https://www.wikidata.org/wiki/Q43035","display_name":"Electrical engineering","level":1,"score":0.6155821681022644},{"id":"https://openalex.org/C52192207","wikidata":"https://www.wikidata.org/wiki/Q5322","display_name":"Capacitor","level":3,"score":0.5998736619949341},{"id":"https://openalex.org/C70234604","wikidata":"https://www.wikidata.org/wiki/Q780813","display_name":"Galvanic isolation","level":4,"score":0.5886942148208618},{"id":"https://openalex.org/C144534570","wikidata":"https://www.wikidata.org/wiki/Q5325","display_name":"Inductor","level":3,"score":0.489199161529541},{"id":"https://openalex.org/C192562407","wikidata":"https://www.wikidata.org/wiki/Q228736","display_name":"Materials science","level":0,"score":0.4876081049442291},{"id":"https://openalex.org/C2778422915","wikidata":"https://www.wikidata.org/wiki/Q10302051","display_name":"Converters","level":3,"score":0.47350767254829407},{"id":"https://openalex.org/C21881925","wikidata":"https://www.wikidata.org/wiki/Q3503313","display_name":"Power density","level":3,"score":0.4196591079235077},{"id":"https://openalex.org/C165801399","wikidata":"https://www.wikidata.org/wiki/Q25428","display_name":"Voltage","level":2,"score":0.41050955653190613},{"id":"https://openalex.org/C24326235","wikidata":"https://www.wikidata.org/wiki/Q126095","display_name":"Electronic engineering","level":1,"score":0.3977067470550537},{"id":"https://openalex.org/C127413603","wikidata":"https://www.wikidata.org/wiki/Q11023","display_name":"Engineering","level":0,"score":0.32721006870269775},{"id":"https://openalex.org/C163258240","wikidata":"https://www.wikidata.org/wiki/Q25342","display_name":"Power (physics)","level":2,"score":0.21334674954414368},{"id":"https://openalex.org/C121332964","wikidata":"https://www.wikidata.org/wiki/Q413","display_name":"Physics","level":0,"score":0.09052956104278564},{"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/isscc42613.2021.9365955","is_oa":false,"landing_page_url":"https://doi.org/10.1109/isscc42613.2021.9365955","pdf_url":null,"source":null,"license":null,"license_id":null,"version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"2021 IEEE International Solid- State Circuits Conference (ISSCC)","raw_type":"proceedings-article"}],"best_oa_location":null,"sustainable_development_goals":[{"id":"https://metadata.un.org/sdg/7","score":0.7200000286102295,"display_name":"Affordable and clean energy"}],"awards":[],"funders":[],"has_content":{"pdf":false,"grobid_xml":false},"content_urls":null,"referenced_works_count":7,"referenced_works":["https://openalex.org/W2594531757","https://openalex.org/W2751348345","https://openalex.org/W2802403743","https://openalex.org/W2921401512","https://openalex.org/W2921644351","https://openalex.org/W3015933661","https://openalex.org/W6776113852"],"related_works":["https://openalex.org/W631083485","https://openalex.org/W2027630214","https://openalex.org/W4313452936","https://openalex.org/W2097026685","https://openalex.org/W2480068220","https://openalex.org/W2048093852","https://openalex.org/W2102542442","https://openalex.org/W2049526694","https://openalex.org/W1561400108","https://openalex.org/W4285031945"],"abstract_inverted_index":{"Power":[0],"delivering":[1],"with":[2,57,124,185,217],"galvanic":[3],"isolation":[4,27,60,76],"is":[5,29,47,63,120,138,164,169,175],"essential":[6],"to":[7,106,142,191,195,215],"guarantee":[8],"system":[9],"safety":[10],"and":[11,43,74,101,149,166,182],"reliability":[12],"in":[13,49,140,229,247],"harsh":[14],"industry":[15],"environments.":[16],"However,":[17,156,199],"efficiently":[18],"transferring":[19],"power":[20,38,56,73,128,153,250],"of":[21,23,110,117,129,147,154,160,252],"hundreds":[22],"mW":[24],"across":[25],"an":[26,44],"barrier":[28],"challenging":[30],"for":[31,97],"such":[32,161],"sizeand":[33],"costconstrained":[34],"applications.":[35],"Isolated":[36],"capacitive":[37],"transfer":[39],"using":[40,81,134,178],"on-chip":[41,67],"capacitors":[42],"off-chip":[45],"inductor":[46],"demonstrated":[48],"[1],":[50],"but":[51],"it":[52],"only":[53,218,253],"delivers":[54],"62mW":[55],"<;":[58],"1kV":[59],"voltage":[61],"that":[62,207,240],"limited":[64],"by":[65,177],"the":[66,71,75,99,102,115,118,157,167,173,193,200,210,213,223],"capacitors.":[68],"To":[69],"increase":[70],"output":[72,127,152,220],"voltage,":[77],"isolated":[78,225],"DC-DC":[79],"converters":[80,226],"silicon-based":[82],"postprocessed":[83],"micro-transformers":[84],"have":[85],"been":[86],"reported":[87],"recently":[88],"[2-4].":[89],"In":[90,171],"[2],":[91],"6-\u03bcm-thick":[92],"plated":[93],"Au":[94],"are":[95,189,227],"used":[96],"both":[98],"primary":[100],"secondary":[103],"coil":[104],"windings":[105],"achieve":[107,143],"quality":[108,187],"factors":[109,188],"6.8":[111],"at":[112,197],"200MHz,":[113],"while":[114],"efficiency":[116,146,214],"converter":[119,194],"lower":[121],"than":[122],"34%":[123,216],"a":[125,135,144,150,162,230,248],"maximum":[126,151,249],"0.8W.":[130],"A":[131],"performance-enhanced":[132],"micro-transformer":[133,174],"magnetic":[136],"core":[137],"proposed":[139,202],"[3]":[141,238],"peak":[145],"52%":[148],"1.1W.":[155],"fabrication":[158],"process":[159],"transformer":[163],"complex":[165],"cost":[168],"high.":[170],"[4],":[172],"formed":[176],"ultrathick":[179],"metal":[180],"windings,":[181],"high":[183,186],"inductances":[184],"achieved":[190],"allow":[192],"switch":[196],"11MHz.":[198],"topology":[201],"produces":[203],"large":[204],"resonant":[205],"currents":[206],"flow":[208],"into":[209],"coils,":[211],"degrading":[212],"165mW":[219],"power.":[221],"Moreover,":[222],"abovementioned":[224],"assembled":[228],"small-outline":[231],"integrated-circuit":[232],"(SOIC)":[233],"8-lead":[234],"[2]":[235],"or":[236,243],"28-lead":[237],"packages":[239],"measure":[241],"6mm\u00d710mm":[242],"10mm\u00d718mm,":[244],"respectively,":[245],"resulting":[246],"density":[251],"13.33mW/mm2.":[254]},"counts_by_year":[{"year":2026,"cited_by_count":1},{"year":2025,"cited_by_count":8},{"year":2024,"cited_by_count":10},{"year":2023,"cited_by_count":4},{"year":2022,"cited_by_count":5},{"year":2021,"cited_by_count":1}],"updated_date":"2026-06-11T09:08:48.828518","created_date":"2025-10-10T00:00:00"}