E like me nā mea hoʻololi, ʻike pinepine ʻia ʻo MOSFET a me IGBT i nā kaapuni uila.Ua like pū lākou me nā hiʻohiʻona a me nā hiʻohiʻona.Manaʻo wau he nui ka poʻe e noʻonoʻo i ke kumu e pono ai kekahi mau kaapuni e hoʻohana i ka MOSFET, aʻo nā mea ʻē aʻe.IGBT?
He aha ka ʻokoʻa ma waena o lākou?Aʻe,ʻOlukeye pane i kāu mau nīnau!
He aha ka aMOSFET?
MOSFET, ka inoa Kina piha he metal-oxide semiconductor field effect transistor.No ka mea ua hoʻokaʻawale ʻia ka ʻīpuka o kēia transistor hopena kahua e kahi papa insulating, ua kapa ʻia ʻo ia he insulated gate field effect transistor.Hiki ke hoʻokaʻawale ʻia ka MOSFET i ʻelua ʻano: "N-type" a me "P-type" e like me ka polarity o kāna "channel" (mea lawe hana), i kapa ʻia ʻo N MOSFET a me P MOSFET.
Loaʻa i ka MOSFET ponoʻī kāna diode parasitic ponoʻī, i hoʻohana ʻia e pale i ka MOSFET mai ke ahi ʻana i ka wā o ka VDD over-voltage.No ka mea, ma mua o ka hoʻopōʻino ʻana o ka overvoltage i ka MOSFET, ua hoʻohaʻahaʻa mua ka diode a kuhikuhi i ke au nui i ka honua, a laila e pale ai i ka MOSFET mai ke ahi ʻana.
He aha ka IGBT?
ʻO IGBT (Insulated Gate Bipolar Transistor) he mea hana semiconductor pūhui i haku ʻia me kahi transistor a me kahi MOSFET.
ʻAʻole i hui pū ʻia nā hōʻailona kaapuni o IGBT.Ke kahakiʻi ʻana i ke kiʻikuhi schematic, ʻaiʻē ʻia nā hōʻailona o ka triode a me MOSFET.I kēia manawa, hiki iā ʻoe ke hoʻoholo inā he IGBT a i ʻole MOSFET mai ke kumu hoʻohālike i kaha ʻia ma ke kiʻikuhi schematic.
I ka manawa like, pono ʻoe e noʻonoʻo inā he diode kino ka IGBT.Inā ʻaʻole i kaha ʻia ma ke kiʻi, ʻaʻole ia he manaʻo ʻaʻole ia.Inā ʻaʻole i hōʻike ʻia ka ʻikepili kūhelu, aia kēia diode.ʻO ka diode kino i loko o ka IGBT ʻaʻole ia he parasitic, akā ua hoʻonohonoho kūikawā ʻia e pale i ka fragile reverse withstand voltage o ka IGBT.Ua kapa ʻia ʻo ia ʻo FWD (freewheeling diode).
He ʻokoʻa ke ʻano o loko o nā mea ʻelua
ʻO nā pou ʻekolu o MOSFET he kumu (S), ka wai (D) a me ka puka (G).
ʻO nā pou ʻekolu o ka IGBT he ʻohi (C), emitter (E) a me ka puka (G).
Kūkulu ʻia kahi IGBT ma ka hoʻohui ʻana i kahi papa hou i ke kahawai o kahi MOSFET.ʻO kā lākou hana i loko e like me kēia:
ʻOkoʻa nā kahua noi o nā mea ʻelua
ʻOkoʻa nā hale o loko o MOSFET a me IGBT, e hoʻoholo ana i kā lākou mau kahua noi.
Ma muli o ke ʻano o MOSFET, hiki iā ia ke hoʻokō maʻamau i kahi manawa nui, hiki ke hiki i KA, akā ʻaʻole ikaika e like me ka IGBT ka mana koi koi.ʻO kāna mau wahi noi nui ke hoʻololi nei i nā lako mana, nā ballast, ka hoʻomehana induction kiʻekiʻe, nā mīkini welding inverter kiʻekiʻe, nā lako mana kamaʻilio a me nā kahua lako mana kiʻekiʻe.
Hiki i ka IGBT ke hana i ka nui o ka mana, ka manawa a me ka uila, akā ʻaʻole kiʻekiʻe ke alapine.I kēia manawa, hiki i ka wikiwiki hoʻololi paʻakikī o IGBT ke hiki i 100KHZ.Hoʻohana nui ʻia ʻo IGBT i nā mīkini welding, inverters, frequency converters, electroplating electrolytic power supply, ultrasonic induction heat a me nā māla ʻē aʻe.
ʻO nā hiʻohiʻona nui o MOSFET a me IGBT
Loaʻa i ka MOSFET nā hiʻohiʻona o ka impedance hoʻokomo kiʻekiʻe, ka wikiwiki o ka hoʻololi ʻana, ke kūpaʻa wela maikaʻi, ka mana o ka mana uila, a me nā mea ʻē aʻe.
Ma ke ʻano he ʻano hou o ka mīkini semiconductor uila, loaʻa i ka IGBT nā hiʻohiʻona o ka impedance hoʻokomo kiʻekiʻe, ka hoʻohana ʻana i ka mana uila haʻahaʻa, ke kaʻa kaʻa maʻalahi, ke kūpaʻa uila kiʻekiʻe, a me ka hoʻomanawanui nui o kēia manawa, a ua hoʻohana nui ʻia i nā ʻano uila uila.
Hōʻike ʻia ke kaʻapuni like kūpono o IGBT ma ke kiʻi ma lalo nei.ʻO IGBT ka hui pū ʻana o MOSFET a me ka transistor.Loaʻa i ka MOSFET ka hemahema o ke kūpaʻa kiʻekiʻe, akā ua lanakila ʻo IGBT i kēia hemahema.Loaʻa ka IGBT i ka haʻahaʻa-kū'ē i ka volta kiʻekiʻe..
Ma keʻano laulā, ʻo ka pōmaikaʻi o MOSFET ʻo ia ka loaʻa ʻana o nā hiʻohiʻona kiʻekiʻe kiʻekiʻe a hiki ke hana ma ke alapine o nā haneli o kHz a hiki i MHz.ʻO ka hemahema ʻo ia ka nui o ka on-resistance a nui ka hoʻohana ʻana i ka mana i nā kūlana kiʻekiʻe-volt a me nā kūlana kiʻekiʻe.Hana maikaʻi ʻo IGBT i nā kūlana haʻahaʻa haʻahaʻa a me nā kūlana mana kiʻekiʻe, me ka liʻiliʻi ma ke kū'ē a me ke kūpaʻa kiʻekiʻe.
E koho i ka MOSFET a i ʻole IGBT
Ma ke kaapuni, inā paha e koho i ka MOSFET ma ke ʻano he paipu hoʻololi mana a i ʻole IGBT he nīnau e hālāwai pinepine ai nā ʻenekinia.Inā noʻonoʻo ʻia nā mea e like me ka volta, ka manawa, a me ka mana hoʻololi o ka ʻōnaehana, hiki ke hōʻuluʻulu ʻia kēia mau mea:
Nīnau pinepine ka poʻe: "Ua ʻoi aku ka maikaʻi o MOSFET a i ʻole IGBT?"ʻOiaʻiʻo, ʻaʻohe ʻokoʻa maikaʻi a maikaʻi ʻole ma waena o nā mea ʻelua.ʻO ka mea nui e ʻike i kāna hoʻohana maoli.
Inā he mau nīnau kāu e pili ana i ka ʻokoʻa ma waena o MOSFET a me IGBT, hiki iā ʻoe ke kelepona iā Olukey no nā kikoʻī.
Hāʻawi nui ʻo Olukey i nā huahana WINSOK medium a haʻahaʻa haʻahaʻa MOSFET.Hoʻohana nui ʻia nā huahana i ka ʻoihana koa, nā papa alakaʻi LED/LCD, nā papa hoʻokele kaʻa, ka hoʻouka wikiwiki ʻana, nā paka uila, nā nānā LCD, nā lako mana, nā mea pono hale liʻiliʻi, nā huahana olakino, a me nā huahana Bluetooth.ʻO nā unahi uila, nā mea uila kaʻa, nā huahana pūnaewele, nā mea pono hale, nā peripheral kamepiula a me nā huahana kikohoʻe like ʻole.
Ka manawa hoʻouna: Dec-18-2023
