MOSFET Cov Hauv Paus: 13 Kauj Ruam

2024 Tus sau: John Day | [email protected]. Kawg hloov kho: 2024-01-30 09:29

Nyob zoo! Hauv Cov Lus Qhia no, Kuv yuav qhia koj cov hauv paus ntawm MOSFETs, thiab los ntawm cov hauv paus, Kuv txhais tau tias yog lub hauv paus tiag tiag. Cov vis dis aus no yog qhov zoo rau tus neeg uas tsis tau kawm MOSFET tshaj lij, tab sis xav siv lawv hauv cov phiaj xwm. Kuv yuav tham txog n thiab p channel MOSFETs, yuav siv lawv li cas, lawv txawv li cas, vim li cas ob qho tseem ceeb, vim li cas MOSFET cov tsav tsheb thiab yam zoo li ntawd. Kuv tseem yuav tham txog qee qhov paub me ntsis txog MOSFETs thiab ntau ntxiv.

Cia peb nkag mus rau hauv.

Kauj ruam 1: Saib Video

Cov vis dis aus tau hais txhua yam uas tau piav qhia yuav tsum tau tsim rau txoj haujlwm no. Cov vis dis aus muaj qee qhov ua yeeb yaj kiab uas yuav pab sai sai rau qhov tseeb. Koj tuaj yeem saib nws yog tias koj xav pom kev tab sis yog tias koj xav tau cov ntawv, mus dhau cov kauj ruam tom ntej.

Kauj ruam 2: FET

Ua ntej pib MOSFETs, cia kuv qhia koj rau nws ua ntej, JFET lossis Junction Field Effect Effect Transistor. Nws yuav ua kom nkag siab MOSFET yooj yim dua.

Kab lus hla ntawm JFET tau qhia hauv daim duab. Lub davhlau ya nyob twg zoo ib yam rau MOSFETs lub davhlau ya nyob twg. Qhov chaw nruab nrab yog hu ua txheej txheej lossis lub cev, thiab nws tsuas yog n hom lossis p hom semiconductor nyob ntawm seb hom FET. Cov cheeb tsam tom qab ntawd tau loj hlob ntawm cov substrate uas muaj hom sib txawv dua li ntawm cov substrate muaj npe rooj vag, ntws thiab qhov chaw. Xijpeem qhov hluav taws xob koj thov, koj thov rau cov cheeb tsam no.

Niaj hnub no, los ntawm qhov pom ntawm qhov pom, nws muaj tsawg heev los tsis muaj qhov tseem ceeb. Kuv yuav tsis mus piav qhia ntau dua li qhov no vim nws yuav tau txais kev paub dhau thiab tsis xav tau ib qho twg.

Lub cim ntawm JFET yuav pab peb nkag siab lub cim ntawm MOSFET.

Kauj Ruam 3: MOSFET

Tom qab qhov no los txog MOSFET, muaj qhov sib txawv loj ntawm lub qhov rooj dav hlau. Ua ntej ua kev sib cuag rau lub rooj vag lub dav hlau txheej txheej ntawm Silicon Dioxide tau loj dua saum cov hauv paus. Qhov no yog vim li cas nws lub npe Metallic Oxide Semiconductor Field effect Transistor. SiO2 yog lub dielectric zoo heev, lossis koj tuaj yeem hais tau insulator. Qhov no nce lub qhov rooj tiv thaiv hauv qhov ntsuas ntawm kaum rau lub zog kaum ohms thiab peb xav tias hauv MOSFET lub qhov rooj tam sim no Ig ib txwm xoom. Qhov no yog qhov laj thawj vim li cas nws tseem hu ua Insulated Gate Field Effect Transistor (IGFET). Ib txheej ntawm tus neeg xyuas pib zoo xws li txhuas tau loj hlob ntxiv rau saum toj no tag nrho peb cheeb tsam, thiab tom qab ntawd muaj kev sib cuag. Hauv cheeb tsam rooj vag, koj tuaj yeem pom tias cov phaj sib npaug sib npaug zoo li tus qauv tau tsim thiab nws tau qhia txog qhov muaj peev xwm loj rau lub qhov rooj dav hlau. Lub peev xwm no hu ua lub qhov rooj muaj peev xwm thiab tuaj yeem rhuav tshem koj li kev yooj yim yog tias tsis suav nrog. Cov no kuj tseem ceeb heev thaum kawm txog qib kev tshaj lij.

Lub cim rau MOSFETs tuaj yeem pom hauv daim duab txuas nrog. Tso lwm txoj kab ntawm lub rooj vag ua rau muaj kev nkag siab thaum cuam tshuam nrog JFETs, qhia tias lub qhov rooj tau raug thaiv. Cov xub taw qhia hauv lub cim no piav qhia txog kev coj ua ntawm cov khoom siv hluav taws xob ntws hauv MOSFET, uas yog qhov sib txawv ntawm qhov ntws tam sim no

Kauj Ruam 4: MOSFET Puas yog 4 Terminal Terminal?

Ib qho ntxiv uas kuv xav ntxiv yog tias tib neeg feem coob xav tias MOSFET yog peb lub davhlau ya nyob twg, thaum MOSFETs yog plaub lub davhlau ya nyob twg. Lub davhlau ya nyob twg plaub yog lub cev davhlau ya nyob twg. Tej zaum koj yuav tau pom lub cim txuas rau MOSFET, lub dav hlau nruab nrab yog rau lub cev.

Tab sis vim li cas yuav luag txhua MOSFETs tsuas muaj peb lub dav hlau tawm los ntawm nws?

Lub davhlau ya nyob twg ntawm lub cev yog sab hauv mus rau qhov chaw vim nws tsis siv rau hauv daim ntawv thov ntawm ICs yooj yim no, thiab tom qab ntawd lub cim dhau los ua qhov peb paub zoo.

Lub davhlau ya nyob twg lub cev feem ntau siv thaum lub tshuab CMOS nyuaj IC tsim. Nco ntsoov tias qhov no yog rooj plaub rau n channel MOSFET, daim duab yuav txawv me ntsis yog tias MOSFET yog p channel.

Kauj Ruam 5: Nws Ua Haujlwm Li Cas

Ok, yog li tam sim no cia saib seb nws ua haujlwm li cas.

Bipolar Junction Transistor lossis BJT yog lub cuab yeej tswj tam sim no, uas txhais tau tias tus nqi ntws tam sim no hauv nws lub davhlau ya nyob twg txiav txim siab txog qhov tam sim no uas yuav ntws los ntawm transistor, tab sis peb paub tias tsis muaj lub luag haujlwm tam sim no hauv MOSFETs lub qhov rooj dav dav thiab sib sau ua ke peb tuaj yeem hais tias nws yog lub tshuab ntsuas hluav taws xob tsis yog vim lub qhov rooj tam sim no ib txwm xoom tab sis vim nws cov qauv uas kuv yuav tsis piav qhia hauv Cov Lus Qhia no vim nws qhov nyuaj.

Cia peb txiav txim siab n n Channel MOSFET. Thaum tsis muaj qhov siv hluav taws xob hauv lub qhov rooj dav hlau, ob qho rov qab mus rau sab nraum qab diodes muaj nyob nruab nrab ntawm cov hauv paus thiab cov dej ntws thiab thaj chaw ua rau txoj hauv kev ntawm cov dej ntws thiab qhov chaw kom muaj kev tiv thaiv nyob rau hauv kev txiav txim ntawm 10 rau lub zog 12 ohms.

Kuv tau muab cov hauv paus rau tam sim no thiab pib nce qhov rooj qhov hluav taws xob. Thaum txog qhov tsawg kawg nkaus qhov hluav taws xob tau mus txog, qhov kev tiv thaiv poob qis thiab MOSFET pib ua thiab tam sim no pib ntws los ntawm kev ntws mus rau qhov chaw. Qhov tsawg kawg nkaus qhov hluav taws xob no hu ua qhov pib qhov hluav taws xob ntawm MOSFET thiab qhov ntws tam sim no yog vim tsim cov channel los ntawm cov dej ntws mus rau qhov chaw hauv cov substrate ntawm MOSFET. Raws li lub npe qhia, hauv n Channel MOSFET, cov channel tau tsim los ntawm n hom ntawm cov neeg nqa khoom tam sim no piv txwv li cov tshuab hluav taws xob, uas yog qhov sib txawv ntawm hom substrate.

Kauj Ruam 6: Tab sis…

Nws tsuas yog pib ntawm no. Ua ntawv thov qhov pib tsis txhais tau tias koj tsuas yog npaj siv MOSFET. Yog tias koj saib cov ntaub ntawv ntawm IRFZ44N, n channel MOSFET, koj yuav pom tias ntawm nws qhov pib qhov hluav taws xob, tsuas yog qee yam tsawg kawg nkaus tam sim no tuaj yeem ntws los ntawm nws. Qhov ntawd yog qhov zoo yog tias koj tsuas yog xav siv cov khoom me me zoo li LEDs nkaus xwb, tab sis, dab tsi yog lub ntsiab lus ces. Yog li rau kev siv cov khoom loj uas kos ntau tam sim no koj yuav tsum tau siv hluav taws xob ntau ntxiv rau lub qhov rooj. Qhov nce qhov rooj qhov hluav taws xob ua rau cov channel ua rau muaj dej ntws ntau dhau los ntawm nws. Txhawm rau tig MOSFET kom tiav, qhov hluav taws xob Vgs, uas yog qhov hluav taws xob nruab nrab ntawm lub qhov rooj thiab qhov chaw yuav tsum nyob ib puag ncig li ntawm 10 txog 12 Volts, uas txhais tau tias yog lub hauv paus tau pib, lub qhov rooj yuav tsum yog 12 Volts lossis li ntawd.

MOSFET peb nyuam qhuav tham txog hu ua txhim kho hom MOSFETs vim li cas cov channel tau txhim kho nrog nce qhov rooj qhov hluav taws xob. Muaj lwm hom MOSFET hu ua depletion type MOSFET. Qhov sib txawv loj yog qhov tseeb tias cov channel twb muaj tam sim no hauv hom MOSFET uas ploj lawm. Hom MOSFETs no feem ntau tsis muaj nyob hauv khw. Lub cim rau hom MOSFET ploj mus yog qhov sib txawv, cov kab khoom qhia tau tias cov channel twb muaj tam sim no.

Kauj Ruam 7: Vim Li Cas MOSFET Tsav Tsheb?

Tam sim no cia peb hais tias koj siv lub microcontroller los tswj MOSFET, tom qab ntawd koj tsuas tuaj yeem siv qhov siab tshaj 5 Volts lossis tsawg dua rau lub qhov rooj, uas yuav tsis txaus rau qhov siab tam sim no.

Yam koj tuaj yeem ua tau yog siv MOSFET tus tsav tsheb zoo li TC4420, koj tsuas yog yuav tsum muab lub logic teeb liab ntawm nws cov pins nkag thiab nws yuav saib xyuas tus so lossis koj tuaj yeem tsim tus tsav tsheb koj tus kheej, tab sis MOSFET tus tsav tsheb muaj ntau yam zoo dua hauv qhov tseeb tias nws tseem saib xyuas ntau yam ntxiv xws li lub qhov rooj muaj peev xwm thiab lwm yam.

Thaum MOSFET qhib tag, nws qhov kev tawm tsam yog qhia los ntawm Rdson thiab tuaj yeem pom yooj yim hauv cov ntawv teev npe.

Kauj Ruam 8: P Channel MOSFET

P channel MOSFET tsuas yog qhov txawv ntawm n channel MOSFET. Tam sim no ntws los ntawm qhov chaw mus rau cov dej ntws thiab cov channel tau tsim los ntawm p hom kev them nqi nqa khoom, piv txwv li qhov.

Cov hauv paus hauv p channel MOSFET yuav tsum yog qhov muaj peev xwm tshaj plaws thiab kom ua tiav nws ntawm Vgs yuav tsum yog qhov tsis zoo 10 txog 12 Volts

Piv txwv li, yog tias lub hauv paus tau txuas rau 12 Volts lub qhov rooj ntawm xoom volts yuav tsum muaj peev xwm ua kom nws qhib tau thiab yog vim li cas peb feem ntau hais tias thov 0 Volts mus rau lub qhov rooj tig ap channel MOSFET ON thiab vim qhov xav tau no MOSFET tsav tsheb rau n channel tsis tuaj yeem siv ncaj qha nrog p channel MOSFET. P channel MOSFET cov tsav tsheb muaj nyob hauv khw (zoo li TC4429) lossis koj tuaj yeem yooj yim siv lub inverter nrog n channel MOSFET tsav tsheb. P channel MOSFETs muaj qhov ua tau zoo dua tiv thaiv ntau dua li n channel MOSFETs tab sis qhov ntawd tsis txhais tau tias koj tuaj yeem siv ib n channel MOSFET rau txhua qhov kev thov tau.

Kauj Ruam 9: Tab sis Vim Li Cas?

Cia peb hais tias koj yuav tsum siv MOSFET hauv thawj qhov teeb tsa. Hom kev hloov pauv no hu ua qis qis hloov pauv vim tias koj siv MOSFET los txuas lub cuab yeej rau hauv av. Ib n channel MOSFET yuav zoo tshaj rau txoj haujlwm no li Vgs tsis txawv thiab tuaj yeem tswj tau yooj yim ntawm 12 Volts.

Tab sis yog tias koj xav siv n channel MOSFET rau sab siab hloov pauv, lub hauv paus tuaj yeem nyob txhua qhov chaw ntawm av thiab Vcc, uas thaum kawg yuav cuam tshuam rau qhov hluav taws xob Vgs raws li lub qhov rooj hluav taws xob tsis tu ncua. Qhov no yuav muaj kev cuam tshuam loj heev rau kev ua haujlwm zoo ntawm MOSFET. Tsis tas li MOSFET kub hnyiab yog Vgs ntau dua li qhov tau hais tseg siab tshaj plaws uas nyob ib puag ncig 20 Volts ntawm qhov nruab nrab.

Li no, nws tsis yog ncuav mog qab zib taug kev mus siv n channel MOSFETs ntawm no, peb ua dab tsi yog peb siv p channel MOSFET txawm tias muaj kev tiv thaiv ntau dua raws li nws muaj qhov zoo dua uas Vgs yuav nyob tas li thaum lub sijhawm hloov siab. Tseem muaj lwm txoj hauv kev zoo li bootstrapping, tab sis kuv yuav tsis npog lawv tam sim no.

Kauj ruam 10: Id-Vds Nkhaus

Thaum kawg, cia peb ua nrawm saib ntawm Id-Vds nkhaus. MOSFET ua haujlwm ntawm peb cheeb tsam, thaum Vgs tsawg dua qhov pib qhov hluav taws xob, MOSFET raug txiav tawm hauv cheeb tsam, piv txwv li nws tawm. Yog tias Vgs loj dua qhov pib qhov hluav taws xob tab sis tsawg dua qhov sib npaug ntawm qhov hluav taws xob poob nruab nrab ntawm cov dej ntws thiab qhov chaw thiab qhov pib qhov hluav taws xob, nws tau hais tias yog nyob hauv cheeb tsam triode lossis cheeb tsam tawm. Hauv cheeb tsam liner, MOSFET tuaj yeem siv los ua qhov ntsuas hluav taws xob sib txawv. Yog tias Vgs ntau dua li qhov ntsuas hluav taws xob tau hais tseg, tom qab ntawd cov dej ntws tawm tas li nws tau hais tias yuav ua haujlwm hauv thaj av saturation thiab ua kom MOSFET ua raws li kev hloov pauv nws yuav tsum tau ua haujlwm hauv cheeb tsam no raws li qhov siab tshaj plaws tuaj yeem hla MOSFET hauv cheeb tsam no

Kauj Ruam 11: Tshooj Lus Qhia

n Channel MOSFET: IRFZ44N

INDIA - https://amzn.to/2vDTF6DUS - https://amzn.to/2vB6oXwUK -

p Channel MOSFET: IRF9630US - https://amzn.to/2vB6oXwUK -

n Channel MOSFET Driver: TC4420US -

p Channel MOSFET Tsav Tsheb: TC4429

Kauj ruam 12: Qhov ntawd yog nws

Tam sim no koj yuav tsum paub txog cov hauv paus ntawm MOSFETs thiab tuaj yeem txiav txim siab MOSFET zoo meej rau koj txoj haujlwm.

Tab sis cov lus nug tseem nyob, thaum twg peb yuav tsum siv MOSFETs? Cov lus teb yooj yim yog thaum koj yuav tsum hloov pauv cov khoom loj uas xav tau hluav taws xob ntau thiab tam sim no. MOSFETs muaj qhov zoo ntawm kev siv hluav taws xob tsawg kawg piv rau BJTs txawm tias muaj dej ntau dua.

Yog tias kuv plam ib yam dab tsi, lossis ua tsis raug, lossis koj muaj lus qhia, thov tawm tswv yim hauv qab no.

Txiav txim siab tso npe rau peb Cov Lus Qhia thiab YouTube channel. Ua tsaug rau kev nyeem, pom koj hauv Cov Lus Qhia tom ntej.

Kauj Ruam 13: Cov Khoom Siv

n Channel MOSFET: IRFZ44NINDIA - https://amzn.to/2vDTF6DUS - https://amzn.to/2vB6oXwUK -

p Channel MOSFET: IRF9630US - https://amzn.to/2Jmm437UK -

n Channel MOSFET Tsav Tsheb: TC4420US -

p Channel MOSFET Tsav Tsheb: TC4429