Ni ubuhe buryo bwo gusaba kuri MOSFET?

MOSFETs ikoreshwa cyane muburyo bwa analogi na sisitemu kandi bifitanye isano rya bugufi nubuzima bwacu.Ibyiza bya MOSFETs ni: umuzunguruko wa drake uroroshye cyane. Inzira ya shoferi ya TTL. Icya kabiri, MOSFETs ihindura byihuse kandi irashobora gukora kumuvuduko mwinshi kuko nta ngaruka zo kubika amafaranga. Mubyongeyeho, MOSFETs ntabwo zifite uburyo bwa kabiri bwo gutsindwa. Ubushyuhe buri hejuru, akenshi imbaraga zo kwihangana, niko bishoboka ko hashobora kugabanuka ubushyuhe, ariko kandi no mubushuhe bwagutse kugirango butange imikorere myiza.MOSFETS yakoreshejwe mumubare munini wibisabwa, mubikoresho bya elegitoroniki byabaguzi, ibicuruzwa byinganda, amashanyarazi ibikoresho, terefone zigezweho nibindi bicuruzwa byifashishwa bya elegitoroniki bishobora kuboneka ahantu hose.

 

Isesengura ryimanza nyinshi

1 Guhindura porogaramu zitanga amashanyarazi

Mubisobanuro, iyi porogaramu isaba MOSFETs kuyobora no gufunga buri gihe. Mugihe kimwe, hariho topologiya nyinshi zishobora gukoreshwa muguhindura amashanyarazi, nka DC-DC itanga amashanyarazi akunze gukoreshwa mumashanyarazi yibanze ashingira kuri MOSFETs ebyiri kugirango akore umurimo wo guhinduranya, aba bahinduranya ubundi muri inductor kugirango babike imbaraga, hanyuma fungura imbaraga kumuzigo. Kugeza ubu, abashushanya akenshi bahitamo imirongo ya magana ya kHz ndetse no hejuru ya 1MHz, bitewe nuburyo iyo inshuro nyinshi, ntoya kandi yoroshye ibice bya magneti. Ikintu cya kabiri cyingenzi cyane MOSFET muguhindura ibikoresho birimo ingufu zisohoka, voltage yumubyimba, inzitizi yumuryango nimbaraga za avalanche.

 

2, porogaramu yo kugenzura ibinyabiziga

Porogaramu igenzura moteri nubundi buryo busaba imbaragaMOSFETS. Ubusanzwe igice-kiraro kigenzura imiyoboro ikoresha MOSFETS ebyiri (ikiraro cyuzuye gikoresha bine), ariko MOSFETs ebyiri zigihe (igihe cyapfuye) zirangana. Kuri iyi porogaramu, igihe cyo gukira (trr) ni ngombwa cyane. Iyo ugenzura umutwaro wa inductive (nka moteri ihinduranya moteri), umuzenguruko ugenzura uhindura MOSFET mumuzunguruko wikiraro ukajya kuri reta, icyo gihe ikindi cyerekezo cyumuzingi wikiraro gihindura byigihe gito umuyaga ukoresheje diode yumubiri muri MOSFET. Rero, ikigezweho cyongeye kuzenguruka kandi gikomeza guha moteri. Iyo MOSFET yambere yongeye gukora, amafaranga yabitswe mubindi diode ya MOSFET agomba gukurwaho no gusohoka binyuze muri MOSFET yambere. Nigihombo cyingufu, nuko trr ngufi, igihombo gito.

 

3, porogaramu zikoresha imodoka

Imikoreshereze yimbaraga MOSFETs mubikoresho byimodoka yazamutse vuba mumyaka 20 ishize. ImbaragaBYINSHIni Byahiswemo kuko birashobora kwihanganira ibintu byihuta byumuvuduko mwinshi biterwa na sisitemu isanzwe ya elegitoroniki yimodoka, nko kumena imitwaro no guhinduka gutunguranye kwingufu za sisitemu, kandi pake yayo iroroshye, cyane cyane ikoresha TO220 na TO247. Muri icyo gihe, porogaramu nka windows ya power, inshinge za lisansi, guhanagura rimwe na rimwe, hamwe no kugenzura ubwato bigenda bihinduka buhoro buhoro mumamodoka menshi, kandi ibikoresho bisa nimbaraga birasabwa mugushushanya. Muri kiriya gihe, imbaraga zimodoka MOSFETs zahindutse uko moteri, solenoide, hamwe ninshinge za lisansi byamenyekanye cyane.

 

MOSFETs ikoreshwa mubikoresho byimodoka ikubiyemo ibintu byinshi bya voltage, imigezi, hamwe no kurwanya. Ibikoresho bigenzura ibinyabiziga bikoresha ibiraro ukoresheje 30V na 40V bigabanya ingufu za voltage, ibikoresho 60V bikoreshwa mugutwara imizigo aho gupakurura imitwaro itunguranye no gutangira ibintu bigomba kugenzurwa, kandi tekinoroji ya 75V irasabwa mugihe urwego rwinganda rwimuriwe muri sisitemu ya batiri 42V. Ibikoresho bifasha cyane bya voltage bisaba gukoresha moderi 100V kugeza kuri 150V, naho ibikoresho bya MOSFET hejuru ya 400V bikoreshwa mubice byabashoferi ba moteri no kugenzura imiyoboro yo gusohora cyane (HID).

 

Imodoka ya MOSFET yimodoka itwara kuva kuri 2A kugeza hejuru ya 100A, hamwe no kurwanya-kuva kuri 2mΩ kugeza 100mΩ. Imizigo myinshi irimo moteri, indangagaciro, amatara, ibice byo gushyushya, inteko za capacito piezoelectric hamwe nibikoresho bya DC / DC. Guhindura inshuro zisanzwe kuva kuri 10kHz kugeza 100kHz, hamwe na caveat ko kugenzura moteri bidakwiriye guhinduranya imirongo iri hejuru ya 20kHz. Ibindi bisabwa byingenzi ni imikorere ya UIS, imiterere yimikorere kurwego rwo hejuru yubushyuhe (-40 dogere kugeza kuri dogere 175, rimwe na rimwe kugera kuri dogere 200) hamwe no kwizerwa cyane kurenza ubuzima bwimodoka.

 

4, amatara ya LED n'amatara

Mugushushanya amatara ya LED n'amatara akoresha MOSFET, kubushakashatsi bwa LED burigihe, koresha NMOS. imbaraga MOSFET na transistor ya bipolar mubisanzwe biratandukanye. Ubushobozi bw'irembo bwayo ni bunini. Ubushobozi bugomba kwishyurwa mbere yo kuyobora. Iyo voltage ya capacitor irenze voltage yumubare, MOSFET itangira gukora. Niyo mpamvu, ni ngombwa kumenya mugihe cyashushanyaga ko ubushobozi bwumutwaro wumushoferi wamarembo bugomba kuba bunini bihagije kugirango harebwe ko kwishyuza ubushobozi buke bwamarembo (CEI) byarangiye mugihe gisabwa na sisitemu.

 

Guhindura umuvuduko wa MOSFET biterwa cyane no kwishyuza no gusohora ubushobozi bwinjiza. Nubwo uyikoresha adashobora kugabanya agaciro ka Cin, ariko arashobora kugabanya agaciro ka gate Drive ya loop signal inkomoko yimbere yo kurwanya imbere, bigaragarira cyane hano, tuvuga ko guhitamo kwaBYINSHIbivuga hanze ya MOSFET yimodoka ihoraho-ya IC. yubatswe muri MOSFET IC ntabwo ikeneye gusuzumwa. Muri rusange, MOSFET yo hanze izasuzumwa kumashanyarazi arenze 1A. Kugirango ubone ubushobozi bunini kandi bworoshye LED bwimbaraga, MOSFET yo hanze niyo nzira yonyine yo guhitamo IC ikeneye gutwarwa nubushobozi bukwiye, kandi ubushobozi bwa MOSFET bwinjiza nibintu byingenzi.