Ndingenza ntoni ukulungisa iMOSFET yam efudumala kakubi?

Iisekethe zokubonelela ngombane, okanye iisekethe zokubonelela ngombane kwintsimi yokuqhubela phambili, ngokuqinisekileyo zisebenziseIi-MOSFETs, eziziindidi ezininzi kwaye zinemisebenzi emininzi. Ukutshintsha unikezelo lwamandla okanye izicelo zokuqhubela phambili, kungokwemvelo ukusebenzisa umsebenzi walo wokutshintsha.

Nokuba luphi uhlobo lwe-N okanye uhlobo lwe-PI-MOSFET, umgaqo ngokusisiseko uyafana, i-MOSFET yongezwa kwisango lesiphelo sebhondi yangoku ukulawula icala lemveliso ye-drain yangoku, i-MOSFET sisixhobo esilawulwa yi-voltage esekwe kungokunje okongeziweyo kwisango kwisango. Ukuguqulwa kweempawu zesixhobo, akuthandeki ekutshintsheni njenge-transistor ngenxa yesiseko sangoku esibangelwa yimpembelelo yokugcinwa kwentlawulo efanelekileyo, kwaye ke, kwisicelo sokutshintsha, isantya sokutshintsha kwe-MOSFET kufuneka sikhawuleze kuno transistor Isantya sokutshintsha kufuneka sikhawuleze kune-triode.

I-MOSFETezincinci-zangoku ubushushu oonobangela

I-1, umgaqo wesekethe yengxaki kukuvumela i-MOSFET ukuba isebenze kwimo yomgca wokusebenza, kunokuba kwimeko yokutshintsha. Oku kukwangunobangela wobushushu beMOSFET. Ukuba ukutshintshwa kwe-N-MOS, i-voltage yokusebenza ye-G-level ngaphezu kokunikezelwa kwamandla okutshintsha i-V embalwa, ukwenzela ukuba ivule kwaye ivale ngokupheleleyo, i-P-MOS yenye indlela. Ayiphelelanga ngokupheleleyo kwaye ilahleko inkulu kakhulu ekhokelela ekukhutshweni kwamandla okuphuma, isekethe elinganayo yeDC ye-impedance inkulu, ilahleko iyandiswa, ngoko ke i-U * ndiyandisiwe, ukuncipha kubonisa ubushushu. Oku kwakhona kuthintelwe isekethe yolawulo lwenkqubo yoyilo olungachanekanga.

2, i-frequency iphezulu kakhulu, ubukhulu becala ngamanye amaxesha kusukelwa kakhulu umthamo ogqibeleleyo, okukhokelela kuphuculo lokuphindaphinda, i-MOSFET ekwandisweni kokusetyenziswa, ngoko ke ubushushu bunyuke.

I-3, ayizange iyenze inkqubo yoyilo yokukhutshwa kobushushu eyaneleyo, okwangoku iphezulu kakhulu, ixabiso langoku lokunyamezela kwe-MOSFET, ngokubanzi kufuneka kugcinwe ukukhutshwa okulungileyo kokushisa kunokwenziwa. Ke ngoko, i-ID ingaphantsi kunomsinga ophezulu, kusenokwenzeka ukuba ishushu kakhulu, kufuneka yanele ukunceda i-heat sink.

I-4, ukhetho lwemodeli ye-MOSFET aluchanekanga, amandla aphumayo awachanekanga, ukuchasana kwe-MOSFET akuthathelwa ngqalelo, okukhokelela ekwandeni kokutshintsha kokuphazamiseka kweempawu.

I-MOSFET encinci yokufudumeza yangoku ibaluleke kakhulu ukuba ingasonjululwa njani?