Qhov txawv ntawm MOSFET thiab IGBT yog dab tsi? Olukey yuav teb koj cov lus nug!

Raws li kev hloov pauv, MOSFET thiab IGBT feem ntau tshwm sim hauv hluav taws xob circuits. Lawv kuj zoo ib yam nyob rau hauv tsos thiab cov yam ntxwv tsis. Kuv ntseeg tias ntau tus neeg yuav xav tsis thoob vim li cas qee lub voj voog yuav tsum siv MOSFET, thaum lwm tus ua. IGBT?

Qhov txawv ntawm lawv yog dab tsi? Tom ntej no,Olukeyyuav teb koj cov lus nug!

Dab tsi yog aMOSFET?

MOSFET, Suav lub npe tag nrho yog hlau-oxide semiconductor field effect transistor. Vim hais tias lub rooj vag ntawm lub teb cov nyhuv transistor yog cais los ntawm ib txheej insulating, nws tseem hu ua ib tug insulated gate field effect transistor. MOSFET tuaj yeem muab faib ua ob hom: "N-hom" thiab "P-hom" raws li qhov polarity ntawm nws "channel" (ua haujlwm cab kuj), feem ntau kuj hu ua N MOSFET thiab P MOSFET.

Ntau yam channel schematics ntawm MOSFET

Lub MOSFET nws tus kheej muaj nws tus kheej parasitic diode, uas yog siv los tiv thaiv lub MOSFET los ntawm burning tawm thaum VDD yog overvoltage. Vim tias ua ntej lub overvoltage ua rau kev puas tsuaj rau MOSFET, lub diode thim rov qab ua ntej thiab coj cov tam sim no loj rau hauv av, yog li tiv thaiv MOSFET los ntawm kev hlawv tawm.

IGBT yog dab tsi?

IGBT (Insulated Gate Bipolar Transistor) yog ib qho khoom siv hluav taws xob sib xyaw ua ke ntawm cov transistor thiab MOSFET.

Cov cim Circuit Court ntawm IGBT tseem tsis tau koom ua ke. Thaum kos daim duab kos duab, cov cim ntawm triode thiab MOSFET feem ntau qiv. Lub sijhawm no, koj tuaj yeem txiav txim siab seb nws yog IGBT lossis MOSFET los ntawm tus qauv cim ntawm daim duab schematic.

Nyob rau tib lub sijhawm, koj yuav tsum tau saib xyuas seb IGBT puas muaj lub cev diode. Yog tias nws tsis cim rau ntawm daim duab, nws tsis txhais hais tias nws tsis muaj nyob. Tshwj tsis yog cov ntaub ntawv tseem ceeb hais txog lwm yam, qhov no diode tam sim no. Lub cev diode hauv IGBT tsis yog kab mob parasitic, tab sis tshwj xeeb yog tsim los tiv thaiv qhov tsis yooj yim thim rov qab tiv thaiv hluav taws xob ntawm IGBT. Nws tseem hu ua FWD (freewheeling diode).

Cov qauv sab hauv ntawm ob qhov sib txawv

Peb tus ncej ntawm MOSFET yog qhov chaw (S), ntws (D) thiab rooj vag (G).

Peb tus ncej ntawm IGBT yog collector (C), emitter (E) thiab rooj vag (G).

Ib qho IGBT yog tsim los ntawm kev ntxiv ib txheej ntxiv rau qhov ntws ntawm MOSFET. Lawv cov qauv hauv qab no yog raws li nram no:

Daim ntawv thov teb ntawm ob qhov sib txawv

Cov qauv sab hauv ntawm MOSFET thiab IGBT sib txawv, uas txiav txim siab lawv daim ntawv thov.

Vim yog cov qauv ntawm MOSFET, feem ntau nws tuaj yeem ua tiav qhov tam sim no loj, uas tuaj yeem ncav cuag KA, tab sis qhov yuav tsum tau ua ntej qhov hluav taws xob tiv taus muaj peev xwm tsis muaj zog li IGBT. Nws cov cheeb tsam tseem ceeb yog hloov cov khoom siv hluav taws xob, ballasts, high-frequency induction cua sov, high-frequency inverter vuam tshuab, kev sib txuas lus fais fab mov thiab lwm yam khoom siv hluav taws xob siab.

IGBT tuaj yeem tsim tau ntau lub zog, tam sim no thiab qhov hluav taws xob, tab sis qhov zaus tsis siab dhau. Tam sim no, qhov nyuaj hloov ceev ntawm IGBT tuaj yeem ncav cuag 100KHZ. IGBT yog dav siv nyob rau hauv vuam tshuab, inverters, zaus converters, electroplating electrolytic fais fab mov, ultrasonic induction cua sov thiab lwm yam teb.

Cov yam ntxwv tseem ceeb ntawm MOSFET thiab IGBT

MOSFET muaj cov yam ntxwv ntawm cov input impedance siab, hloov ceev ceev, zoo thermal stability, voltage tswj tam sim no, thiab lwm yam nyob rau hauv lub Circuit Court, nws yuav siv tau raws li amplifier, hluav taws xob hloov thiab lwm yam hom phiaj.

Raws li hom tshiab ntawm cov khoom siv hluav taws xob semiconductor, IGBT muaj cov yam ntxwv ntawm cov khoom siv hluav taws xob siab, tsis tshua muaj hluav taws xob tswj hluav taws xob, kev tswj xyuas yooj yim, hluav taws xob tsis zoo, thiab kev ua siab ntev tam sim no, thiab tau siv dav hauv ntau yam khoom siv hluav taws xob.

Qhov zoo tshaj plaws sib npaug Circuit Court ntawm IGBT yog qhia hauv daim duab hauv qab no. IGBT yog qhov ua ke ntawm MOSFET thiab transistor. MOSFET muaj qhov tsis zoo ntawm kev tiv thaiv siab, tab sis IGBT kov yeej qhov tsis txaus. IGBT tseem muaj qhov tsis zoo ntawm qhov hluav taws xob siab. .

IGBT zoo tagnrho sib npaug Circuit Court

Feem ntau, qhov zoo ntawm MOSFET yog tias nws muaj cov yam ntxwv zoo siab thiab tuaj yeem ua haujlwm ntawm ntau pua kHz thiab mus txog MHz. Qhov tsis zoo yog tias qhov kev tawm tsam yog qhov loj thiab kev siv hluav taws xob loj hauv high-voltage thiab high-tam sim no cov xwm txheej. IGBT ua tau zoo nyob rau hauv tsawg zaus thiab siab zog, nrog me me rau-kuj thiab siab tiv taus voltage.

Xaiv MOSFET lossis IGBT

Nyob rau hauv Circuit Court, seb puas yuav xaiv MOSFET raws li lub hwj chim hloov raj los yog IGBT yog ib lo lus nug uas engineers feem ntau ntsib. Yog hais tias cov yam ntxwv xws li qhov voltage, tam sim no, thiab hloov lub zog ntawm lub kaw lus raug muab coj los txiav txim siab, cov ntsiab lus hauv qab no tuaj yeem ua tiav:

Cov neeg feem ntau nug: "Puas yog MOSFET lossis IGBT zoo dua?" Qhov tseeb, tsis muaj qhov zoo lossis qhov tsis zoo ntawm ob qho tib si. Qhov tseem ceeb tshaj plaws yog saib nws daim ntawv thov tiag tiag.

Yog tias koj tseem muaj lus nug txog qhov txawv ntawm MOSFET thiab IGBT, koj tuaj yeem tiv tauj Olukey kom paub meej.

Olukey feem ntau faib WINSOK nruab nrab thiab qis voltage MOSFET cov khoom. Cov khoom siv dav siv hauv kev lag luam tub rog, LED / LCD tsav tsheb boards, lub rooj tsav tsheb tsav tsheb, them ceev ceev, hluav taws xob luam yeeb, LCD saib, khoom siv hluav taws xob, khoom siv hauv tsev me, khoom kho mob, thiab cov khoom siv Bluetooth. Cov nplais hluav taws xob, tsheb hluav taws xob, khoom siv network, khoom siv hauv tsev, khoos phis tawj peripherals thiab ntau yam khoom siv digital.