Cov tiam neeg thib peb ntawm cov semiconductors, uas sawv cev los ntawm gallium nitride (GaN) thiab silicon carbide (SiC), tau tsim kho sai sai vim lawv cov khoom zoo heev. Txawm li cas los xij, yuav ua li cas ntsuas qhov tseeb ntawm cov kev cai thiab cov yam ntxwv ntawm cov khoom siv no kom siv tau lawv lub peev xwm thiab ua kom zoo dua lawv cov kev ua haujlwm thiab kev ntseeg tau xav tau cov khoom siv ntsuas siab thiab cov txheej txheem kev tshaj lij.
Cov khoom siv tshiab uas siv dav dav (WBG) uas sawv cev los ntawm silicon carbide (SiC) thiab gallium nitride (GaN) tab tom siv ntau dua thiab ntau dua. Hauv kev siv hluav taws xob, cov khoom no nyob ze rau cov insulators dua li silicon thiab lwm yam khoom siv semiconductor. Cov khoom no yog tsim los kov yeej cov kev txwv ntawm silicon vim tias nws yog cov khoom siv nqaim thiab yog li ua rau muaj kev xau hluav taws xob tsis zoo, uas ua rau pom tseeb dua thaum kub, voltage lossis zaus nce ntxiv. Qhov txwv rau qhov xau no yog kev ua haujlwm tsis raug tswj, sib npaug rau kev ua haujlwm tsis ua haujlwm ntawm semiconductor.
Ntawm ob yam khoom siv dav dav no, GaN feem ntau yog tsim rau cov phiaj xwm siv hluav taws xob qis thiab nruab nrab, nyob ib puag ncig 1 kV thiab qis dua 100 A. Ib qho chaw loj hlob tseem ceeb rau GaN yog nws siv rau hauv teeb pom kev zoo LED, tab sis kuj loj hlob hauv lwm yam kev siv hluav taws xob tsawg xws li kev sib txuas lus hauv tsheb thiab RF. Qhov sib txawv, cov thev naus laus zis nyob ib puag ncig SiC tau tsim zoo dua li GaN thiab zoo dua rau cov ntawv thov hluav taws xob siab dua xws li cov inverters traction tsheb fais fab, kev xa hluav taws xob, cov khoom siv HVAC loj, thiab cov kab ke kev lag luam.
Cov khoom siv SiC muaj peev xwm ua haujlwm ntawm qhov hluav taws xob siab dua, qhov hloov pauv zaus siab dua, thiab qhov kub siab dua li Si MOSFETs. Hauv qab cov xwm txheej no, SiC muaj kev ua tau zoo dua, kev ua haujlwm zoo dua, lub zog ceev thiab kev ntseeg siab. Cov txiaj ntsig no pab cov neeg tsim qauv txo qhov loj me, qhov hnyav thiab tus nqi ntawm cov hloov hluav taws xob kom ua rau lawv sib tw ntau dua, tshwj xeeb tshaj yog nyob rau hauv cov lag luam muaj txiaj ntsig xws li kev tsav dav hlau, tub rog thiab tsheb fais fab.
SiC MOSFETs ua lub luag haujlwm tseem ceeb hauv kev tsim cov khoom siv hloov pauv hluav taws xob tiam tom ntej vim lawv muaj peev xwm ua tiav kev siv hluav taws xob zoo dua hauv kev tsim qauv raws li cov khoom me me. Qhov kev hloov pauv no kuj xav kom cov engineers rov mus saib qee qhov kev tsim qauv thiab kev sim uas ib txwm siv los tsim cov khoom siv hluav taws xob.
Qhov kev xav tau rau kev kuaj mob hnyav tab tom loj hlob tuaj
Yuav kom paub txog lub peev xwm ntawm SiC thiab GaN cov khoom siv, yuav tsum muaj kev ntsuas kom meej thaum lub sijhawm hloov pauv kom ua haujlwm tau zoo thiab ntseeg tau. Cov txheej txheem sim rau SiC thiab GaN semiconductor cov khoom siv yuav tsum xav txog qhov ua haujlwm siab dua thiab voltages ntawm cov khoom siv no.
Kev tsim cov cuab yeej kuaj thiab ntsuas, xws li cov tshuab hluav taws xob ua haujlwm tsis raws cai (AFGs), oscilloscopes, cov cuab yeej ntsuas qhov chaw (SMU), thiab cov cuab yeej ntsuas parameter, tab tom pab cov kws tsim hluav taws xob ua tiav cov txiaj ntsig muaj zog dua sai dua. Qhov kev hloov kho tshiab ntawm cov khoom siv no tab tom pab lawv daws cov teeb meem txhua hnub. "Kev txo qis kev poob ntawm kev hloov pauv tseem yog qhov teeb meem loj rau cov kws ua haujlwm hluav taws xob," Jonathan Tucker, tus thawj coj ntawm Power Supply Marketing ntawm Teck/Gishili tau hais. Cov qauv tsim no yuav tsum tau ntsuas kom zoo kom ntseeg tau tias muaj kev sib xws. Ib qho ntawm cov txheej txheem ntsuas tseem ceeb hu ua kev sim ob npaug (DPT), uas yog txoj kev txheem rau kev ntsuas cov kev hloov pauv ntawm MOSFETs lossis IGBT cov khoom siv hluav taws xob.
Kev teeb tsa los ua SiC semiconductor ob lub pulse test suav nrog: lub tshuab hluav taws xob ua haujlwm los tsav MOSFET grid; Oscilloscope thiab software tsom xam rau kev ntsuas VDS thiab ID. Ntxiv rau kev sim ob lub pulse, uas yog, ntxiv rau kev sim theem circuit, muaj kev sim theem khoom siv, kev sim theem khoom thiab kev sim theem system. Kev tsim kho tshiab hauv cov cuab yeej sim tau ua rau cov kws tsim qauv ntawm txhua theem ntawm lub neej ua haujlwm rau cov khoom siv hloov pauv hluav taws xob uas tuaj yeem ua tau raws li cov kev cai tsim qauv nruj thiab tsim nyog tus nqi.
Kev npaj txhij los ua pov thawj cov khoom siv los teb rau kev hloov pauv txoj cai thiab cov kev xav tau tshiab rau cov khoom siv kawg, txij li kev tsim hluav taws xob mus rau cov tsheb fais fab, tso cai rau cov tuam txhab ua haujlwm ntawm cov khoom siv hluav taws xob kom tsom mus rau kev tsim kho tshiab thiab tsim lub hauv paus rau kev loj hlob yav tom ntej.
Lub sijhawm tshaj tawm: Lub Peb Hlis-27-2023