Chidziwitso cha mfundo zogwirira ntchito za ma MOSFET omwe amagwiritsidwa ntchito kwambiri

Masiku ano pa omwe amagwiritsidwa ntchito kwambiri mphamvuMOSFETkufotokoza mwachidule mfundo zake zogwirira ntchito. Onani momwe imazindikirira ntchito yakeyake.

 

Metal-Oxide-Semiconductor ndiko, Metal-Oxide-Semiconductor, ndendende, dzina ili limafotokoza kapangidwe ka MOSFET mu gawo lophatikizika, ndiko kuti: mu kapangidwe ka semiconductor chipangizo, kuphatikiza silicon dioxide ndi chitsulo, mapangidwe. wa pachipata.

 

Gwero ndi kukhetsa kwa MOSFET ndizotsutsana, onse kukhala madera amtundu wa N omwe amapangidwa mumtundu wa P-backgate. Nthawi zambiri, madera awiriwa ndi ofanana, ngakhale malekezero awiri a kusintha sikungakhudze ntchito ya chipangizocho, chipangizo choterocho chimatengedwa ngati symmetrical.

 

Gulu: molingana ndi mtundu wazinthu zamakina ndi mtundu wa chipata cha insulated cha njira iliyonse ya N ndi P-channel ziwiri; molingana ndi njira yoyendetsera: MOSFET imagawidwa kukhala kuchepa ndi kupititsa patsogolo, kotero MOSFET imagawidwa mu N-channel depletion ndi kupititsa patsogolo; P-chanelo kuchepa ndi kukulitsa magulu anayi akuluakulu.

MOSFET mfundo ntchito - structural makhalidwe aMOSFETimapanga chonyamulira chimodzi chokha cha polarity (polys) chomwe chimakhudzidwa ndi conductive, ndi transistor unipolar. Kuwongolera kumafanana ndi MOSFET yamphamvu yotsika, koma mawonekedwe ake ali ndi kusiyana kwakukulu, MOSFET yamphamvu yotsika ndi chipangizo cholumikizira chopingasa, mphamvu zambiri za MOSFET vertical conductive structure, zomwe zimadziwikanso kuti VMOSFET, zomwe zimathandizira kwambiri MOSFET. chipangizo voteji ndi panopa kupirira mphamvu. Chofunikira chachikulu ndi chakuti pali kusanjikiza kwa silika pakati pa chipata chachitsulo ndi njira, motero kumakhala ndi kukana kwakukulu kolowera, chubuchi chimayendetsa magawo awiri apamwamba a n diffusion zone kuti apange n-mtundu conductive njira. Ma MOSFET opititsa patsogolo ma n-channel ayenera kuyikidwa pachipata ndi kukondera kutsogolo, ndipo pokhapokha mphamvu yamagetsi yachipata imakhala yayikulu kuposa mphamvu yamagetsi yamagetsi opangidwa ndi n-channel MOSFET. N-channel depletion type MOSFETs ndi n-channel MOSFETs momwe njira zoyendetsera zimapangidwira ngati palibe magetsi a chipata (chipata cha magetsi ndi zero).

 

Mfundo yoyendetsera ntchito ya MOSFET ndikuwongolera kuchuluka kwa "charge induced" pogwiritsa ntchito VGS kusintha mawonekedwe a conductive channel opangidwa ndi "charge induced", ndiyeno kukwaniritsa cholinga chowongolera kukhetsa kwapano. Pakupanga machubu, kudzera m'kati insulating wosanjikiza zikamera chiwerengero chachikulu cha ayoni zabwino, kotero mbali ina ya mawonekedwe akhoza ananyengerera zambiri zoipa mlandu, izi zoipa mlandu kwa mkulu malowedwe a zonyansa mu N. dera lolumikizidwa ndi mapangidwe a njira yoyendetsera, ngakhale mu VGS = 0 palinso ID yayikulu yotayikira. pamene chipata voteji kusinthidwa, kuchuluka kwa mlandu anachititsa mu tchanelo nawonso kusintha, ndi conductive njira m'lifupi ndi narrowness wa njira ndi kusintha, motero kutayikira panopa ID ndi voteji chipata. ID yamakono imasiyanasiyana ndi magetsi a gate.

 

Tsopano ntchito yaMOSFETyathandiza kwambiri kuphunzira kwa anthu, kugwira ntchito moyenera, komanso kuwongolera moyo wathu. Timamvetsetsa bwino za izi kudzera mu kumvetsetsa kosavuta. Sizidzangogwiritsidwa ntchito ngati chida, kumvetsetsa bwino makhalidwe ake, mfundo ya ntchito, yomwe idzatipatsenso zosangalatsa zambiri.