I-Mastering MOSFET njengoTshintsho: Gqibezela iSikhokelo sokuPhunyezwa kuMbane woMbane woMbane-Olukey

Isishwankathelo esiKhawulezayo:Esi sikhokelo sibanzi siphonononga indlela yokuzisebenzisa ngempumelelo ii-MOSFET njengotshintsho kwizicelo ze-elektroniki, kugxilwe ekuphunyezweni okusebenzayo kunye nezisombululo zehlabathi lokwenyani.

Ukuqonda iMiyalelo yoTshintsho yeMOSFET

I-Metal-Oxide-Semiconductor Field-Effect Transistors (MOSFETs) iguqule izinto zombane zala maxesha ngokubonelela ngesisombululo esisebenzayo nesithembekileyo sokutshintsha. Njengomboneleli okhokelayo wee-MOSFETs ezikumgangatho ophezulu, siya kukukhokela kuyo yonke into ekufuneka uyazi malunga nokusebenzisa la malungu aguquguqukayo njengokutshintsha.

Imigaqo yokuSebenza eyiSiseko

Ii-MOSFETs zisebenza njengotshintsho olulawulwa ngumbane, zibonelela ngeenzuzo ezininzi ngaphezulu kokutshintsha koomatshini bemveli kunye nezinye izixhobo zesemiconductor:

Izantya zokutshintsha ngokukhawuleza (uluhlu lwe-nanosecond)
Uchaso olusezantsi kwimeko (RDS(kwi))
Ukusetyenziswa kwamandla amancinci kwiindawo ezimileyo
Akukho kunxiba kunye nokukrazula koomatshini

Qhagamshelana nathi nge-MOSFET Solutions

I-MOSFET Tshintshela Iindlela zokuSebenza kunye neempawu

Imimandla yokuSebenza ePhambili

Ummandla wokuSebenza	Umqathango weVGS	Ukutshintsha iLizwe	Isicelo
Ummandla osikiweyo	VGS <VTH	OFF State	Vula ukusebenza kwesekethe
Ummandla weLinear/Triode	VGS > VTH	KWIState	Ukutshintsha usetyenziso
Ummandla wokugcwalisa	VGS >> VTH	Iphuculwe ngokupheleleyo	Eyona meko yokutshintsha

IiParameters ezibalulekileyo zoTshintsho lwezicelo

I-RDS(ivuliwe):Ukumelana nomthombo we-drain-state
VGS(th):I-voltage yesango lombane
Isazisi(ubuninzi):Ubuninzi bombhobho wangoku
I-VDS(ubuninzi):Ubuninzi bombane womthombo wokuhambisa amanzi

IziKhokelo eziSebenzayo zokuPhumeza

Iimfuno zokuqhuba isango

Ukuqhuba kwesango okufanelekileyo kubalulekile ekusebenzeni ngokufanelekileyo kokutshintsha kwe-MOSFET. Qwalasela le miba ibalulekileyo:

Iimfuno zombane wesango (ngokuqhelekileyo yi-10-12V ukuze uphuculwe ngokupheleleyo)
Iimpawu zentlawulo yesango
Ukutshintsha iimfuno zesantya
Ukukhetha ukuchasana kwesango

IiSekethe zoKhuselo

Sebenzisa la manyathelo okukhusela ukuqinisekisa ukusebenza okuthembekileyo:

Ukhuseleko lomthombo wesango
- I-Zener diode yokukhusela ukugqithiswa kwamandla
- Isixhasi sesango somda wangoku
Ukhuseleko lwemithombo yamanzi amdaka
- Iisekethe ze-snubber ze-voltage spikes
- I-Freewheeling diodes yemithwalo eguquguqukayo

Jonga uKhetho lwethu lweMOSFET

Ukuqwalaselwa kwesicelo

Izicelo zoBonelelo lwaMandla

Kunikezelo lwamandla kwimowudi yokutshintsha (SMPS), ii-MOSFETs zisebenza njengezinto eziphambili zokutshintsha. Iingqwalasela eziphambili ziquka:

Ikhono lokusebenza lokuphindaphinda okuphezulu
I-RDS ephantsi (kwi) yokuphucula ukusebenza kakuhle
Iimpawu zokutshintsha ngokukhawuleza
Iimfuno zolawulo lobushushu

Izicelo zoLawulo lweeMoto

Kwizicelo zokuqhuba iimoto, qwalasela le miba:

Ikhono lokuphatha langoku
Ukubuyisela umva ukhuseleko lombane
Ukutshintsha iimfuno zamaza
Iingqwalasela zokutshatyalaliswa kobushushu

Ukusombulula iingxaki kunye nokuPhuculwa kokuSebenza

Imiba eqhelekileyo kunye nezisombululo

Khupha	Oonobangela Abanokubakho	Izisombululo
Ilahleko eziphezulu zokutshintsha	Ukungaqhubi kakuhle kwesango, ukuyila kakuhle	Lungiselela isango lokuqhuba, uphucule uyilo lwePCB
Ii-Oscillations	I-Parasitic inductance, ukumanzisa okungonelanga	Yongeza ukuchasana kwesango, sebenzisa iisekethe ze-snubber
Ukubaleka kwe-thermal	Ukupholisa okungonelanga, ukuphindaphinda okuphezulu kokutshintsha	Ukuphucula ulawulo lwe-thermal, ukunciphisa ukuphindaphinda kokutshintsha

Iingcebiso zokuSebenza ngokuSebenzisa

Lungiselela uyilo lwePCB kwiziphumo ezincinci zeparasitic
Khetha i-gate drive circuitry efanelekileyo
Sebenzisa ulawulo olusebenzayo lobushushu
Sebenzisa iisekethe ezifanelekileyo zokukhusela

Kutheni ukhetha iiMOSFET zethu?

Inkcazo ye-RDS (on) ehamba phambili kwishishini
Inkxaso yobugcisa ebanzi
Ikhonkco lonikezelo oluthembekileyo
Amaxabiso okhuphiswano

Cela iQuote Ngoku

Iindlela zexesha elizayo kunye noPhuhliso

Hlala uphambi kwegophe ngezi teknoloji zeMOSFET zivelayo:

I-Bandgap semiconductors (SiC, GaN)
Itekhnoloji yokupakisha ekwinqanaba eliphezulu
Ukuphuculwa kwezisombululo zolawulo lwe-thermal
Ukudibanisa kunye neesekethe zokuqhuba kakuhle

Ngaba ufuna uKhokelo lobuGcisa?

Iqela lethu leengcali likulungele ukukunceda ukhethe isisombululo esifanelekileyo seMOSFET kwisicelo sakho. Qhagamshelana nathi ngoncedo lobuqu kunye nenkxaso yobugcisa.

Qhagamshelana neQela lethu lobuGcisa

Ukubamba i-MOSFET njengoTshintsho: Gqibezela iSikhokelo sokuPhunyezwa kuMbane woMbane