Te Whakakitenga i te Hoahoa me te Hanganga o ngā Maramara Silicon Carbide (SiC): Mai i ngā Kaupapa Taketake ki te Whakamahinga

Ko ngā MOSFET Silicon Carbide (SiC) he taputapu haurua hiko mahi-teitei kua noho hei mea nui i roto i ngā ahumahi mai i ngā waka hiko me te pūngao whakahou ki te aunoatanga ahumahi. Ki te whakatauritea ki ngā MOSFET silicon (Si) tuku iho, ka tukuna e ngā MOSFET SiC te mahi tino pai i raro i ngā āhuatanga tino kino, tae atu ki ngā pāmahana teitei, ngā ngaohiko, me ngā auau. Heoi, ko te whakatutuki i te mahi tino pai i roto i ngā taputapu SiC he nui atu i te whiwhi noa i ngā paparanga kounga teitei me ngā paparanga epitaxial—me whai hoahoa tino tika me ngā tukanga hanga matatau. Ka whakaratohia e tēnei tuhinga he tūhuratanga hohonu o te hanganga hoahoa me ngā tukanga hanga e taea ai ngā MOSFET SiC mahi-teitei.

1. Hoahoa Hanganga Maramara: Tahora Tika mō te Whai Huatanga Nui

Ka tīmata te hoahoa o ngā SiC MOSFET me te tahora o teWafer SiC, koinei te pūtake mō ngā āhuatanga katoa o te taputapu. He maha ngā wāhanga nui o te maramara SiC MOSFET i runga i tōna mata, tae atu ki:

• Papa Pūtake

• Papa Keti

• Papa Pūtake Kelvin

TeMowhiti Whakamutunga Tapa(raneiMowhiti Pēhanga) tētahi atu āhuatanga nui kei te taha o te maramara. Ka āwhina tēnei mowhiti ki te whakapai ake i te ngaohiko pakaru o te taputapu mā te whakaiti i te kukū o te papa hiko i ngā taha o te maramara, ā, ka ārai i ngā ia turuturu me te whakarei ake i te pono o te taputapu. I te nuinga o te wā, ko te Mowhiti Whakamutu Tapa e hangai ana ki tētahiToronga Whakamutunga Hononga (JTE)he hanganga, e whakamahi ana i te tāpiringa hohonu hei arotau i te tohatoha o te mara hiko me te whakapai ake i te ngaohiko pakaru o te MOSFET.

2. Ngā Pūtau Hohe: Te Matua o te Mahi Whakawhiti

TeNgā Pūtau HoheI roto i te SiC MOSFET, ko ngā pūtau te kawenga mō te kawe me te whakawhiti i te au. Kei te whakarite whakarara ēnei pūtau, ā, ka pā tika te maha o ngā pūtau ki te ātete whānui (Rds(on)) me te kaha o te au hiko poto o te taputapu. Hei whakapai ake i te mahi, ka whakaitihia te tawhiti i waenga i ngā pūtau (e mōhiotia ana ko te "cell pitch"), ka whakapai ake i te pai o te kawe whānui.

E rua ngā hanganga matua e taea ai te hoahoa i ngā pūtau hohe:papatahimeawaawangā hanganga. Ahakoa he māmā ake, he pono ake hoki te hanganga papatahi, he iti noa iho ōna herenga mahi nā te tawhiti o ngā pūtau. He rerekē, ka taea e ngā hanganga awaawa te whakarite kia nui ake te kiato o ngā pūtau, ka whakaiti i te Rds(on) me te āhei i te whakahaere i te au teitei ake. Ahakoa kei te piki haere te rongonui o ngā hanganga awaawa nā te pai o tā rātou mahi, kei te tuku tonu ngā hanganga papatahi i te tino pono, ā, kei te arotau tonutia mō ngā tono motuhake.

3. Hanganga JTE: Te Whakapai Ake i te Ārai Ngaohiko

TeToronga Whakamutunga Hononga (JTE)Ko te hanganga he āhuatanga hoahoa matua i roto i ngā SiC MOSFET. Ka whakapai ake te JTE i te kaha aukati-ngaohiko o te taputapu mā te whakahaere i te tohatoha o te mara hiko i ngā taha o te maramara. He mea nui tēnei hei ārai i te pakaru wawe i te taha, te wāhi e nui haere ana ngā mara hiko.

Ko te whai huatanga o te JTE e whakawhirinaki ana ki ētahi āhuatanga:

• Whānuitanga o te Rohe JTE me te Taumata DopingKo te whānui o te rohe JTE me te kukū o ngā tāpiringa ka whakatau i te tohatoha o te mara hiko i ngā taha o te taputapu. Ka taea e te rohe JTE whānui ake, ā, he nui ake te tāpiringa, te whakaiti i te mara hiko me te whakanui ake i te ngaohiko pakaru.

• Te Koki me te Hōhonutanga o te Kone JTEKa pā te koki me te hohonu o te koeko JTE ki te tohatoha o te mara hiko, ā, i te mutunga ka pā ki te ngaohiko pakaru. Ka āwhina te koki koeko iti ake me te rohe JTE hohonu ake ki te whakaiti i te kaha o te mara hiko, ā, ka whakapai ake i te kaha o te taputapu ki te tu atu i ngā ngaohiko teitei ake.

• Te Whakakorenga o te MataHe mea nui te paparanga whakawātea mata ki te whakaiti i ngā ia turuturu o te mata, me te whakanui ake i te ngaohiko pakaru. Mā te paparanga whakawātea kua tino arotauhia ka taea te mahi pono o te taputapu ahakoa ngā ngaohiko teitei.

Ko te whakahaere wera tētahi atu whakaaro nui i roto i te hoahoa JTE. Ka taea e ngā MOSFET SiC te mahi i ngā pāmahana teitei ake i ō rātou hoa silicon, engari ka taea e te wera nui te whakaiti i te mahi me te pono o te taputapu. Nō reira, he mea nui te hoahoa wera, tae atu ki te tohatoha wera me te whakaiti i te ahotea wera, hei whakarite i te pumau o te taputapu mō te wā roa.

4. Ngā Ngaronga Whakawhiti me te Ātete Arataki: Te Arotautanga o te Mahi

I roto i ngā SiC MOSFET,ātete arataki(Rds(on)) mengā ngaronga whakawhitie rua ngā mea matua e whakatau ana i te whai huatanga whānui. Ahakoa ko Rds(on) te kaiwhakahaere o te whai huatanga o te kawe iahiko, ka puta ngā ngaronga whakawhiti i te wā e whakawhiti ana i waenga i ngā āhua on me off, ka whai wāhi ki te whakaputa wera me te ngaronga pūngao.

Hei whakapai ake i ēnei tawhā, me whai whakaaro ki ētahi āhuatanga hoahoa:

• Pūtau PitchHe mea nui te piko, te mokowā rānei i waenga i ngā pūtau hohe, ki te whakatau i te tere o te Rds(on) me te whakawhiti. Mā te whakaiti i te piko ka nui ake te kiato o ngā pūtau me te iti ake o te ātete kawe hiko, engari me taurite hoki te whanaungatanga i waenga i te rahi o te piko me te pono o te kuaha kia kore ai e nui rawa ngā ia turuturu.

• Matotoru o te Waikura KūahaKa pā te matotoru o te paparanga waikura kuaha ki te kaha o te kuaha, ka pā tēnei ki te tere whakawhiti me te Rds(on). Ka whakanuia e te waikura kuaha angiangi te tere whakawhiti engari ka piki ake hoki te mōrearea o te turuturu o te kuaha. Nō reira, he mea nui te kimi i te matotoru waikura kuaha tino pai hei whakataurite i te tere me te pono.

• Ātete KūahaKa pā te ātete o te rauemi kuaha ki te tere whakawhiti me te ātete whānui ki te kawe hiko. Mā te whakauruātete kūahaMā te whakaurunga tika ki roto i te maramara, ka māmā ake te hoahoa o te kōwae, ka whakaiti i te uauatanga me ngā hapa pea i roto i te tukanga tākai.

5. Ātete Kēti Whakauru: Te Whakangawari i te Hoahoa o te Mātā

I roto i ētahi hoahoa SiC MOSFET,ātete kuaha whakaurue whakamahia ana, e whakangawari ana i te hoahoa me te tukanga hanga o te kōwae. Mā te whakakore i te hiahia mō ngā ātete kuaha o waho, ka whakaitihia e tēnei huarahi te maha o ngā wāhanga e hiahiatia ana, ka tapahia ngā utu hanga, ā, ka whakapai ake i te pono o te kōwae.

He maha ngā painga o te whakaurunga o te ātete kuaha ki runga i te maramara:

• Huihuinga Kōwae WhakangawariMā te ātete kuaha whakauru ka māmā ake te tukanga waea, ā, ka whakaiti i te mōrearea o te rahunga.

• Te Whakaiti UtuMā te tango atu i ngā wāhanga o waho ka whakaitihia te pire rauemi (BOM) me ngā utu hanga katoa.

• Ngāwari o te TākaiMā te whakaurunga o te ātete kuaha ka taea te hanga hoahoa mō ngā kōwae kiato ake, kia whai hua ake hoki, ka pai ake te whakamahinga o te wāhi i roto i te takai whakamutunga.

6. Whakamutunga: He Tukanga Hoahoa Uaua mō ngā Pūrere Matatau

Ko te hoahoa me te hanga i ngā SiC MOSFET he mahi tahi uaua o ngā tawhā hoahoa maha me ngā tukanga hanga. Mai i te arotau i te tahora maramara, te hoahoa pūtau hohe, me ngā hanganga JTE, ki te whakaiti i te ātete ara iahiko me ngā mate whakawhiti, me tino whakarite ia wāhanga o te taputapu kia tutuki ai te mahi pai rawa atu.

I te haere tonu o ngā whanaketanga o te hangarau hoahoa me te hanga, kei te piki haere te whai hua, te pono, me te whai hua o ngā SiC MOSFET. I te tipu haere o te hiahia mō ngā taputapu mahi-teitei, whai-pūngao-pai, kua rite ngā SiC MOSFET ki te whai wāhi nui ki te whakakaha i te whakatupuranga o ngā pūnaha hiko e whai ake nei, mai i ngā waka hiko ki ngā whatunga pūngao whakahou me tua atu.