Zeziphi iiparamitha ekufuneka ndinikele ingqalelo kuzo xa ndikhetha i-Triode kunye ne-MOSFET?

Amacandelo ombane aneeparamitha zombane, kwaye kubalulekile ukushiya umda owaneleyo kumacandelo e-elektroniki xa ukhetha uhlobo lokuqinisekisa ukuzinza kunye nokusebenza kwexesha elide lamacandelo e-elektroniki. Okulandelayo yazisa ngokufutshane indlela yokukhetha i-Triode kunye ne-MOSFET.

I-Triode iyisixhobo esilawulwa yi-flow-control, i-MOSFET yisixhobo esilawulwa yi-voltage, kukho ukufana phakathi kwezi zibini, ekukhethweni kwesidingo sokuqwalasela i-voltage yokumelana, yangoku kunye nezinye iiparitha.

 

1, ngokokukhetha okuphezulu kokumelana nombane

Umqokeleli we-Triode C kunye ne-emitter E inokumelana nomthamo omkhulu phakathi kweparameter V (BR) CEO, i-voltage phakathi kwe-CE ngexesha lokusebenza ayiyi kudlula ixabiso elichaziweyo, ngaphandle koko i-Triode iya konakala ngokusisigxina.

Awona mandla ombane aphezulu akhona phakathi kombhobho D kunye nomthombo we-S we-MOSFET ngexesha lokusetyenziswa, kwaye amandla ombane kwi-DS ngexesha lokusebenza kufuneka angagqithi kwixabiso elichaziweyo. Ngokubanzi, i-voltage imelana nexabiso leI-MOSFETiphezulu kakhulu kuneTriode.

 

2, obona buchule buphezulu be-overcurrent

I-Triode ine-parameter ye-ICM, okt, umqokeleli we-overcurrent capability, kunye ne-overcurrent capability ye-MOSFET ibonakaliswe ngokwe-ID. Xa umsebenzi wangoku, i-current flowing kwi-Triode/MOSFET ayinakudlula ixabiso elichaziweyo, ngaphandle koko isixhobo siya kutshiswa.

Ukuqwalasela ukuzinza kokusebenza, umda we-30% -50% okanye nangaphezulu uvumelekile ngokubanzi.

3,Ubushushu bokusebenza

Iitshiphusi zodidi lwentengiso: uluhlu olubanzi lwe-0 ukuya +70 ℃;

Iichips zodidi lweshishini: uluhlu olubanzi lwe -40 ukuya +85 ℃;

Iitshiphusi zebanga loMkhosi: uluhlu olubanzi lwe -55 ℃ ukuya +150 ℃;

Xa usenza ukhetho lwe-MOSFET, khetha itshiphu efanelekileyo ngokwethuba lokusetyenziswa kwemveliso.

 

4, ngokokhetho lokutshintshela amaza

Zombini i-Triode kunyeI-MOSFETzineeparamitha zokutshintsha amaxesha ngamaxesha/ixesha lokuphendula. Ukuba isetyenziswe kwiisekethe eziphezulu ze-frequency, ixesha lokuphendula kwi-tube yokutshintsha kufuneka liqwalaselwe ukuhlangabezana neemeko zokusetyenziswa.

 

5,Eminye imiqathango yokukhetha

Umzekelo, iparamitha ye-Ron yokumelana ne-MOSFET, i-VTH yokuvula amandla ombaneI-MOSFET, kwaye nangokunjalo.

 

Wonke umntu kukhetho lwe-MOSFET, ungadibanisa la manqaku angentla ukuze ukhethe.