MOSFET ntaus ntawv xaiv los txiav txim siab txhua yam ntawm yam, los ntawm me me los xaiv N-hom lossis P-hom, pob hom, loj rau MOSFET voltage, on-resistance, thiab lwm yam., cov ntawv thov sib txawv sib txawv.Cov kab lus hauv qab no qhia txog MOSFET cov cuab yeej xaiv ntawm 3 txoj cai loj, kuv ntseeg tias tom qab nyeem koj yuav muaj ntau yam.
1. Fais fab MOSFET xaiv kauj ruam ib: P-tube, los yog N-tube?
Muaj ob hom fais fab MOSFETs: N-channel thiab P-channel, nyob rau hauv tus txheej txheem ntawm kev tsim qauv los xaiv N-tube los yog P-tube, rau cov ntawv thov tshwj xeeb los xaiv, N-channel MOSFETs xaiv tus qauv, tus nqi qis;P-channel MOSFETs xaiv cov qauv tsawg dua, tus nqi siab.
Yog tias qhov hluav taws xob ntawm S-ncej kev sib txuas ntawm lub hwj chim MOSFET tsis yog qhov siv hauv av ntawm lub kaw lus, N-channel yuav tsum muaj lub tshuab hluav taws xob hauv av, hloov hluav taws xob lossis bootstrap tsav, tsav Circuit Court complex;P-channel tuaj yeem tsav ncaj qha, tsav yooj yim.
Yuav tsum xav txog N-channel thiab P-channel daim ntawv thov feem ntau
ib.Cov khoos phis tawj khoos phis tawj, desktops thiab cov servers siv los muab CPU thiab lub kaw lus txias kiv cua, lub tshuab luam ntawv pub mis lub cev muaj zog tsav, lub tshuab nqus tsev nqus tsev vacuum, cua purifiers, hluav taws xob kiv cua thiab lwm yam khoom siv hauv tsev tswj lub cev muaj zog, cov tshuab no siv cov qauv siv hluav taws xob tag nrho, txhua tus choj caj npab. ntawm lub raj tuaj yeem siv P-tube, tuaj yeem siv N-tube.
b.Kev sib txuas lus system 48V input system ntawm kub-plug MOSFETs tso rau ntawm qhov siab kawg, koj tuaj yeem siv P-tubes, koj tuaj yeem siv N-tubes.
c.Phau ntawv lub computer input circuit nyob rau hauv series, ua lub luag hauj lwm ntawm kev tiv thaiv rov qab kev twb kev txuas thiab load hloov ob rov qab-rau-rov qab zog MOSFETs, kev siv N-channel yuav tsum tau tswj lub nti sab hauv integrated tsav nqi twj tso kua mis, kev siv ntawm P-channel. tuaj yeem tsav ncaj qha.
2. Xaiv hom pob
Fais fab MOSFET channel hom los txiav txim qhov thib ob kauj ruam los txiav txim siab pob, pob cov ntsiab lus xaiv yog.
ib.Kub nce thiab thermal tsim yog qhov tseem ceeb tshaj plaws rau kev xaiv cov pob
Cov pob ntawv sib txawv muaj qhov sib txawv ntawm cov thermal tsis kam thiab lub zog dissipation, ntxiv rau kev xav txog cov thermal tej yam kev mob ntawm lub cev thiab lub ambient kub, xws li seb puas muaj huab cua txias, lub dab dej kub lub cev thiab qhov luaj li cas txwv, seb ib puag ncig yog kaw thiab lwm yam, Lub hauv paus ntsiab lus yog los xyuas kom meej qhov kub thiab txias ntawm lub hwj chim MOSFET thiab system efficiency, lub premise ntawm xaiv tsis thiab pob ntau lub hwj chim MOSFET.
Qee lub sij hawm vim muaj lwm yam mob, yuav tsum tau siv ntau yam MOSFETs nyob rau tib lub sijhawm los daws qhov teeb meem ntawm cov cua sov dissipation, xws li hauv PFC daim ntawv thov, hluav taws xob lub cev muaj zog tswj, kev sib txuas lus, xws li module fais fab mov theem nrab synchronous rectification daim ntaub ntawv, raug xaiv nyob rau hauv parallel nrog ntau lub raj.
Yog tias tsis tuaj yeem siv ntau lub raj sib txuas tsis tuaj yeem siv, ntxiv rau kev xaiv lub zog MOSFET nrog kev ua tau zoo dua, ntxiv rau, cov pob loj dua lossis cov pob tshiab tuaj yeem siv tau, piv txwv li, hauv qee cov khoom siv hluav taws xob AC / DC TO220 yuav hloov mus rau TO247 pob;hauv qee cov khoom siv hluav taws xob sib txuas lus, DFN8 * 8 pob tshiab yog siv.
b.Qhov loj txwv ntawm qhov system
Qee lub tshuab hluav taws xob raug txwv los ntawm qhov loj ntawm PCB thiab qhov siab ntawm sab hauv, xws li module fais fab kev sib txuas lus vim qhov siab ntawm cov kev txwv feem ntau siv DFN5 * 6, DFN3 * 3 pob;nyob rau hauv ib co ACDC fais fab mov, kev siv ultra-nyias tsim los yog vim muaj kev txwv ntawm lub plhaub, sib dhos TO220 pob fais fab MOSFET pins ncaj qha rau hauv paus, qhov siab ntawm cov kev txwv tsis tuaj yeem siv TO247 pob.
Qee tus qauv tsim ultra-thin ncaj qha khoov lub cuab yeej pins tiaj tus, qhov txheej txheem tsim khoom tsim no yuav ua nyuaj.
Hauv kev tsim lub peev xwm loj-muaj peev xwm lithium roj teeb tiv thaiv lub rooj tsavxwm, vim qhov kev txwv hnyav hnyav, feem ntau tam sim no siv chip-theem CSP pob los txhim kho kev ua haujlwm thermal kom ntau li ntau tau, thaum ua kom qhov me me.
c.Tus nqi tswj
Thaum ntxov muaj ntau lub tshuab hluav taws xob siv cov pob ntsaws ntsaws, cov xyoo no vim muaj cov nqi zog ntau ntxiv, ntau lub tuam txhab pib hloov mus rau SMD pob, txawm hais tias cov nqi vuam ntawm SMD dua li ntsaws-hauv siab, tab sis qib siab ntawm automation ntawm SMD vuam, tag nrho cov nqi tseem tuaj yeem tswj tau ntawm qhov tsim nyog.Hauv qee qhov kev siv xws li desktop motherboards thiab boards uas tsis tshua muaj nqi-sensitive, lub zog MOSFETs hauv DPAK pob khoom feem ntau yog siv vim cov nqi qis ntawm cov pob no.
Yog li ntawd, nyob rau hauv kev xaiv ntawm lub hwj chim MOSFET pob, los ua ke lawv tus kheej lub tuam txhab style thiab cov khoom nta, coj mus rau hauv tus account lub saum toj no yam.
3. Xaiv qhov kev tiv thaiv ntawm lub xeev RDSON, ceeb toom: tsis yog tam sim no
Ntau lub sij hawm engineers muaj kev txhawj xeeb txog RDSON, vim RDSON thiab conduction poob yog ncaj qha ntsig txog, qhov me me ntawm RDSON, lub zog me dua MOSFET conduction poob, qhov ua tau zoo dua, qhov kub thiab txias nce.
Ib yam li ntawd, engineers kom deb li deb tau ua raws li qhov project dhau los lossis cov khoom uas twb muaj lawm hauv cov tsev qiv ntawv cov ntaub ntawv, rau RDSON ntawm txoj kev xaiv tiag tiag tsis muaj ntau yam los xav txog.Thaum qhov kub thiab txias ntawm qhov xaiv lub hwj chim MOSFET tsawg dhau, rau cov nqi vim li cas, yuav hloov mus rau RDSON cov khoom loj dua;Thaum qhov kub thiab txias ntawm lub hwj chim MOSFET siab dhau lawm, qhov kev ua tau zoo ntawm qhov system tsis tshua muaj, yuav hloov mus rau RDSON cov khoom me me, los yog los ntawm kev ua kom zoo rau sab nraud tsav Circuit Court, txhim kho txoj hauv kev los kho cov cua sov dissipation, thiab lwm yam.
Yog tias nws yog ib txoj haujlwm tshiab, tsis muaj qhov project yav dhau los ua raws, ces yuav ua li cas xaiv lub zog MOSFET RDSON?Nov yog ib txoj hauv kev los qhia rau koj: txoj kev siv hluav taws xob siv hluav taws xob.
Thaum tsim cov khoom siv hluav taws xob, cov xwm txheej paub yog: cov khoom siv hluav taws xob ntau, cov zis hluav taws xob / cov zis tam sim no, kev ua haujlwm zoo, kev khiav hauj lwm zaus, tsav voltage, ntawm chav kawm, muaj lwm yam kev qhia thiab lub zog MOSFETs feem ntau rau cov kev txwv no.Cov kauj ruam yog raws li nram no.
ib.Raws li cov input voltage ntau, cov zis voltage / tso zis tam sim no, efficiency, xam qhov siab tshaj plaws poob ntawm lub system.
b.Fais fab Circuit Court spurious poob, tsis muaj hluav taws xob Circuit Court Cheebtsam poob zoo li qub, IC zoo li qub poob thiab tsav poob, ua rau kev kwv yees ntxhib, tus nqi empirical tuaj yeem suav txog 10% mus rau 15% ntawm tag nrho cov kev poob.
Yog tias lub zog hluav taws xob muaj qhov ntsuas tam sim no, suav lub zog siv ntawm qhov ntsuas tam sim no.Tag nrho poob rho tawm cov kev poob saum toj no, qhov seem yog cov cuab yeej hluav taws xob, transformer lossis inductor fais fab tuag.
Qhov seem ntawm lub zog poob yuav raug faib rau cov khoom siv hluav taws xob thiab cov khoom siv hluav taws xob lossis cov khoom siv hluav taws xob hauv ib qho kev faib ua feem, thiab yog tias koj tsis paub meej, qhov nruab nrab faib los ntawm tus naj npawb ntawm cov khoom, kom koj tau txais lub zog poob ntawm txhua MOSFET.
c.Lub zog poob ntawm MOSFET yog muab faib rau qhov kev hloov pauv thiab kev hloov pauv hauv ib qho kev faib ua feem, thiab yog tias tsis paub tseeb, qhov kev hloov pauv thiab kev poob qis yog faib sib npaug.
d.Los ntawm MOSFET conduction poob thiab RMS tam sim no ntws, xam qhov siab tshaj plaws tso cai conduction tsis kam, qhov kev tiv thaiv no yog MOSFET ntawm qhov siab tshaj plaws kev sib tshuam kub RDSON.
Cov ntaub ntawv nyob rau hauv lub hwj chim MOSFET RDSON cim nrog ib tug kev ntsuam xyuas tej yam kev mob, nyob rau hauv txawv tej yam kev mob muaj ntau yam muaj nuj nqis, qhov ntsuas kub: TJ = 25 ℃, RDSON muaj ib tug zoo kub coefficient, yog li raws li lub siab tshaj plaws kev khiav hauj lwm junction kub ntawm lub MOSFET thiab RDSON kub coefficient, los ntawm cov saum toj no RDSON xam tus nqi, kom tau tus coj RDSON ntawm 25 ℃ kub.
e.RDSON los ntawm 25 ℃ los xaiv qhov tsim nyog hom fais fab MOSFET, raws li qhov tseeb tsis ntawm MOSFET RDSON, nqis los yog nce trim.
Los ntawm cov kauj ruam saum toj no, kev xaiv ua ntej ntawm lub zog MOSFET qauv thiab RDSON tsis.
Kab lus no tau raug rho tawm los ntawm lub network, thov hu rau peb kom tshem tawm kev ua txhaum cai, ua tsaug!
Zhejiang NeoDen Technology Co., Ltd. tau raug tsim thiab xa tawm ntau yam me me thiab qhov chaw tshuab txij li xyoo 2010. Ua kom zoo dua ntawm peb tus kheej muaj kev paub txog R&D, kev cob qhia zoo, NeoDen yeej lub koob npe nrov los ntawm cov neeg siv khoom thoob ntiaj teb.
Nrog lub ntiaj teb muaj nyob hauv ntau dua 130 lub teb chaws, kev ua tau zoo heev, qhov raug siab thiab kev ntseeg siab ntawm NeoDen PNP cov cav tov ua rau lawv zoo meej rau R & D, kev tshaj lij prototyping thiab me me rau nruab nrab batch ntau lawm.Peb muab kev daws teeb meem ntawm ib qho khoom siv SMT nres.
Ntxiv: No.18, Tianzihu Avenue, Tianzihu Town, Anji County, Huzhou City, Zhejiang Province, Suav teb
Xov tooj: 86-571-26266266
Post lub sij hawm: Apr-19-2022