Momwe mungayezere molondola zida za SiC ndi GaN kuti mugwiritse ntchito zomwe zingatheke, kukhathamiritsa bwino komanso kudalirika

Mbadwo wachitatu wa semiconductors, woimiridwa ndi gallium nitride (GaN) ndi silicon carbide (SiC), wapangidwa mofulumira chifukwa cha katundu wawo wabwino kwambiri. Komabe, momwe mungayezere molondola magawo ndi mawonekedwe a zidazi kuti muthe kukwanitsa zomwe zingatheke ndikuwongolera bwino komanso kudalirika kwawo kumafuna zida zoyezera mwatsatanetsatane komanso njira zamaluso.

Zida zatsopano zamtundu wa wide band gap (WBG) zomwe zimayimiridwa ndi silicon carbide (SiC) ndi gallium nitride (GaN) zikugwiritsidwa ntchito kwambiri. Mwamagetsi, zinthu izi zili pafupi ndi zotetezera kuposa silicon ndi zida zina za semiconductor. Zinthuzi zidapangidwa kuti zigonjetse malire a silicon chifukwa ndi chinthu chocheperako chopanda band ndipo chifukwa chake chimayambitsa kutsika kwamphamvu kwamagetsi, komwe kumawonekera kwambiri kutentha, magetsi kapena ma frequency akuwonjezeka. Malire omveka a kutayikira uku ndi kusayendetsedwa bwino, kofanana ndi kulephera kwa semiconductor.

Pazigawo ziwiri zazikuluzikuluzikuluzikuluzikuluzikuluzikuluzikuluzikuluzikuluzikuluzikuluzikuluzikulu,GaN ndiyoyenera makamaka pakukhazikitsa magetsi otsika ndi apakatikati,ozungulira 1 kV ndi pansi pa 100 A. Malo amodzi okulirapo a GaN ndikugwiritsa ntchito kuyatsa kwa LED, komanso kukulira m'njira zina zotsika mphamvu. monga magalimoto ndi RF mauthenga. Mosiyana ndi zimenezi, matekinoloje ozungulira SiC amapangidwa bwino kuposa GaN ndipo ali oyenerera kugwiritsa ntchito mphamvu zapamwamba monga magetsi oyendetsa galimoto yamagetsi, kutumiza mphamvu, zipangizo zazikulu za HVAC, ndi machitidwe a mafakitale.

Zida za SiC zimatha kugwira ntchito pamagetsi apamwamba, ma frequency osinthika, komanso kutentha kwambiri kuposa ma Si MOSFET. Pansi pazimenezi, SiC imakhala ndi magwiridwe antchito apamwamba, magwiridwe antchito, kachulukidwe kamphamvu komanso kudalirika. Zopindulitsazi zikuthandiza opanga kuchepetsa kukula, kulemera ndi mtengo wa otembenuza mphamvu kuti apange mpikisano wochuluka, makamaka m'magulu opindulitsa a msika monga ndege, asilikali ndi magalimoto amagetsi.

Ma SiC MOSFET amatenga gawo lofunikira popanga zida zosinthira mphamvu za m'badwo wotsatira chifukwa chotha kupeza mphamvu zochulukirapo pamapangidwe otengera tinthu tating'onoting'ono. Kusinthaku kumafunanso kuti mainjiniya ayang'anenso njira zina zopangira ndi kuyesa zomwe zidagwiritsidwa ntchito popanga zida zamagetsi zamagetsi.

Kufunika koyesedwa kolimba kukukulirakulira

Kuti muzindikire kuthekera kwa zida za SiC ndi GaN, miyeso yolondola imafunika panthawi yosinthira kuti mukwaniritse bwino komanso kudalirika. Njira zoyesera za zida za SiC ndi GaN semiconductor ziyenera kuganizira za kuchuluka kwa magwiridwe antchito ndi ma voltages a zidazi.

Kupanga zida zoyesera ndi zoyezera, monga ma jenereta opangira ntchito mosagwirizana (AFGs), ma oscilloscopes, zida zoyezera magwero (SMU), ndi zowunikira ma parameter, zikuthandizira akatswiri opanga magetsi kuti akwaniritse zotsatira zamphamvu mwachangu. Kusintha kwa zida uku kumawathandiza kuthana ndi zovuta za tsiku ndi tsiku. "Kuchepetsa kutayika kosinthika kumakhalabe vuto lalikulu kwa akatswiri opanga zida zamagetsi," adatero Jonathan Tucker, wamkulu wa Power Supply Marketing ku Teck/Gishili. Mapangidwe awa ayenera kuyezedwa mwamphamvu kuti atsimikizire kusasinthika. Imodzi mwa njira zoyezera kwambiri imatchedwa "double pulse test" (DPT), yomwe ndi njira yokhazikika yoyezera magawo osinthira a MOSFET kapena zida zamagetsi za IGBT.

Kukonzekera kuchita SiC semiconductor double pulse test kumaphatikizapo: ntchito jenereta kuyendetsa MOSFET grid; Oscilloscope ndi kusanthula mapulogalamu kuyeza VDS ndi ID. Kuphatikiza pa kuyesa kwapawiri, ndiye kuti, kuwonjezera pakuyesa kwa gawo la dera, pali kuyezetsa kwazinthu, kuyesa kwa magawo ndi kuyesa kwadongosolo. Zatsopano pazida zoyesera zathandiza akatswiri opanga mapangidwe pazigawo zonse za moyo wawo kuti agwiritse ntchito zida zosinthira mphamvu zomwe zimatha kukwaniritsa zofunikira zamapangidwe mopanda mtengo.

Kukonzekera kutsimikizira zida poyankha kusintha kwaulamuliro ndi zosowa zatsopano zaukadaulo pazida zogwiritsa ntchito kumapeto, kuchokera kumagetsi opangira magetsi kupita ku magalimoto amagetsi, zimalola makampani omwe amagwira ntchito pamagetsi amagetsi kuti aziganizira zaukadaulo wowonjezera komanso kukhazikitsa maziko akukula kwamtsogolo.