Ob peb hnub dhau los, Mr. Chen Ziying, Tus Thawj Saib Xyuas Kev Lag Luam ntawm Infineon Industrial Power Control Division, Greater Tuam Tshoj, thiab Mr. Cheng Wentao, Infineon Technology Power and Sensing Division, Daim Ntawv Thov Kev Lag Luam Tus Thawj Coj ntawm Greater Tuam Tshoj, tau tham txog tus nqi ntawm peb tiam semiconductor. technology thiab kev tsim kho kev lag luam hauv kev sib tham hauv xov xwm. Nyob rau hauv-tob txhais ntawm technology thiab technology tiam sis.
Hauv lub sijhawm tom qab Moor, ntawm ib sab, tib neeg lub neej tab tom nrhiav kev txhim kho lub neej zoo nrog cov thev naus laus zis xws li Internet ntawm Txhua Yam, kev txawj ntse, cov ntaub ntawv loj, cov nroog ntse, thiab kev thauj mus los ntse, thiab kev loj hlob sai. yog ceev. Ntawm qhov tod tes, kev txhim kho kev nyab xeeb thoob ntiaj teb los ntawm kev ua neej nyob qis qis tau dhau los ua txhua tus neeg pom zoo.
Tam sim no, kwv yees li ib feem peb ntawm lub ntiaj teb lub zog xav tau yog hluav taws xob xav tau. Qhov kev xav tau ntawm lub zog nce zuj zus, qhov qis qis ntawm cov khoom siv roj fossil, thiab kev hloov pauv huab cua xav kom peb nrhiav kom muaj zog dua thiab muaj txiaj ntsig ntau dua, kev xa tawm, thiab kev faib tawm. , Cia thiab siv.
Nyob rau hauv tag nrho cov kev hloov pauv hluav taws xob, lub zog-txuag lub peev xwm ntawm peb tiam semiconductor thev naus laus zis tuaj yeem ua rau muaj txiaj ntsig zoo rau kev ua tiav cov hom phiaj txuag hluav taws xob mus sij hawm ntev hauv ntiaj teb. Tsis tas li ntawd, cov khoom siv dav dav thiab cov kev daws teeb meem yog qhov tsim nyog rau kev txhim kho kev ua haujlwm, ua kom ceev, txo qhov loj me, txo qhov hnyav, thiab txo tag nrho cov nqi. Yog li ntawd, lawv yuav siv dav hauv kev thauj mus los, cov chaw khaws ntaub ntawv, cov tsev ntse, cov khoom siv hauv tsev, cov khoom siv hluav taws xob ntawm tus kheej, thiab lwm yam. Pab txhawb kev txhim kho kev siv hluav taws xob hauv cov ntawv thov scenarios.
Piv txwv li, nyob rau hauv daim ntawv thov ntawm lub hwj chim hluav taws xob systems, high-ceev fais fab kev pab cuam nrog withstand voltages saum 1200V tau xav tias yuav tshwm sim. Cov cuab yeej zoo li no niaj hnub no' tsis yog-SiC MOSFETs. Lub silicon MOSFET feem ntau yog siv nyob rau hauv qis thiab nruab nrab lub zog teb hauv qab 650V.
Ntxiv nrog rau kev kub ceev, silicon carbide kuj muaj cov yam ntxwv ntawm cov thermal conductivity, siab tawg lub zog, siab saturated electron drift rate, thiab lwm yam, thiab tshwj xeeb tshaj yog haum rau cov ntawv thov uas xav tau kub, siab zog, siab siab, siab zaus. , thiab hnyav tej yam kev mob xws li hluav taws xob tsis kam. .
Lub zog ceev yog lwm qhov tseem ceeb ntawm cov cuab yeej siv cuab yeej cuab tam. Lub nti cheeb tsam ntawm SiC MOSFET tsawg dua li ntawm IGBT. Piv txwv li, qhov loj ntawm 100A / 1200V SiC MOSFET yog li ib feem tsib ntawm cov lej ntawm IGBT thiab freewheeling diode. Yog li ntawd, nyob rau hauv high-power density thiab high-ceev lub cev muaj zog tsav daim ntaub ntawv, tus nqi ntawm SiC MOSFETs yuav ua tau zoo xav, nrog rau 650V SiC MOSFETs.
Nyob rau hauv cov nqe lus ntawm high voltage kuj, high-voltage SiC high-ceev cov cuab yeej saum toj no 1200V tuaj yeem txhim kho kev ua haujlwm ntawm lub cev thiab lub zog ntawm lub zog los ntawm kev nce qhov zaus ntawm qhov system. Nov yog ob qho piv txwv:
· Rau lub zog hluav taws xob ntawm DC them pawg ntawm cov tsheb hluav taws xob, yog tias siv Si MOSFET, ob-theem LLCs yuav tsum tau txuas nrog hauv series, thiab cov circuits nyuaj. Yog tias siv SiC MOSFET, ib-theem LLC tuaj yeem ua tiav, uas ua rau kom muaj zog ib leeg ntawm lub zog ntawm pawg them nyiaj.
· Rau flyback fais fab mov nyob rau hauv peb-theem system, 1700V SiC MOSFET kuj yog ib tug zoo meej tov. Piv nrog 1500V silicon MOSFET, qhov poob tuaj yeem raug txo los ntawm 50% thiab qhov ua tau zoo tuaj yeem nce los ntawm 2.5%.
Hais txog kev ntseeg siab thiab kev ruaj ntseg zoo, SiC cov cuab yeej muaj ob hom: rooj vag planar thiab trench rooj vag. Infineon's trench rooj vag SiC MOSFET tuaj yeem zam qhov teeb meem ntawm lub rooj vag oxide kev ntseeg siab ntawm lub rooj vag planar, thiab lub zog ceev kuj tseem siab dua.
Nws yog qhov tseeb vim hais tias ntawm cov khoom zoo ntawm SiC MOSFET uas nws muaj cov ntawv thov sib xws hauv photovoltaic inverters, UPS, ESS, hluav taws xob them tsheb, roj hlwb, lub cev muaj zog thiab tsheb fais fab.
Txawm li cas los xij, puas yuav silicon carbide los ua qhov kev daws teeb meem kawg rau txhua daim ntawv thov?
Raws li peb txhua tus paub, IGBT thev naus laus zis, tus neeg sawv cev ntawm silicon-based fais fab semiconductors, tau ntsib qee qhov teeb meem hauv kev txhim kho kev ua haujlwm ntxiv. Kev hloov pauv thiab kev txo qis ntawm cov conduction saturation voltage poob yog ib qho kev txwv, thiab qhov chaw ntawm kev txo qhov poob thiab kev txhim kho kev ua tau zoo tau txais me me thiab me me, yog li kev lag luam tau pib cia siab tias SiC tuaj yeem dhau los ua kev cuam tshuam kev siv tshuab. Txawm li cas los xij, qhov kev xav no tsis yog qhov dav heev. Ua ntej ntawm tag nrho cov, thev naus laus zis ntawm silicon-based IGBTs sawv cev los ntawm Infineon kuj tau nce qib. TRENCHSTOP™5 thiab IGBT7 siv micro-trench technology yog qhov tseem ceeb tshiab. Nrog rau kev nce qib ntawm kev ntim tshuab, kev ua haujlwm thiab lub zog ceev ntawm IGBT cov cuab yeej tau nce. Siab dua. Nyob rau tib lub sijhawm, cov khoom tsim los rau cov kev siv sib txawv tuaj yeem tsim tshwj xeeb los txhim kho kev ua haujlwm ntawm cov khoom siv silicon hauv lub cev, yog li txhim kho kev ua haujlwm thiab kev siv nyiaj txiag. Yog li ntawd, txoj kev loj hlob ntawm peb tiam semiconductors yuav tsum tau nrog cov khoom siv silicon. Nyob rau tib lub sijhawm raws li kev txhim kho thev naus laus zis, kuj tseem muaj kev xav txog cov khoom lag luam loj loj rau cov kev siv sib txawv. Nws cia siab tias cov cuab yeej thib peb yuav sai sai no hauv txhua daim ntawv thov. Nws yog qhov tsis muaj tseeb los hloov cov khoom siv silicon hauv qhov xwm txheej.
