Fais fab adapter yog lub npe hu ua high-efficiency thiab lub zog txuag hluav taws xob. Nws sawv cev rau txoj kev loj hlob ntawm kev tswj fais fab mov. Tam sim no, monolithic fais fab adapter integrated circuit tau siv dav vim nws qhov zoo ntawm kev sib koom ua ke siab, kev ua haujlwm siab, qhov yooj yim tshaj plaws peripheral circuit thiab qhov Performance index zoo tshaj plaws. Nws tau dhau los ua cov khoom nyiam ntawm nruab nrab thiab qis zog fais fab fais fab adapter hauv kev tsim.
Pulse width modulation
Ib qho modulation tswj hom feem ntau siv nyob rau hauv lub hwj chim adapter. Pulse width modulation yog hom kev tswj hwm analog, uas hloov pauv qhov kev tsis ncaj ncees ntawm transistor puag lossis MOS rooj vag raws li kev hloov pauv ntawm cov khoom thauj mus los hloov lub sij hawm conduction ntawm transistor lossis MOS, thiaj li hloov cov zis ntawm switching tswj fais fab mov. Nws cov yam ntxwv yog ua kom lub zaus hloov pauv tsis tu ncua, uas yog, lub voj voog hloov pauv tseem tsis hloov pauv, thiab hloov cov mem tes dav kom txo qis qhov kev hloov pauv ntawm cov zis hluav taws xob ntawm lub hwj chim adapter thaum daim phiaj voltage thiab load hloov.
Hla load kho tus nqi
Hla kev tswj tus nqi yog hais txog qhov kev hloov pauv ntawm cov zis hluav taws xob los ntawm kev hloov pauv ntawm cov khoom siv hluav taws xob hauv ntau lub zog hluav taws xob adapter. Kev hloov pauv ntawm lub zog thauj khoom yuav ua rau kev hloov pauv ntawm lub zog tso zis. Thaum lub load nce, cov zis txo. Ntawm qhov tsis sib xws, thaum lub load txo, cov zis nce. Cov zis hloov pauv tshwm sim los ntawm kev hloov pauv ntawm lub zog zoo yog me me, thiab qhov ntsuas dav dav yog 3% - 5%. Nws yog ib qho tseem ceeb index los ntsuas qhov voltage stabilizing kev ua tau zoo ntawm multi-channel tso zis fais fab adapter.
Parallel kev ua haujlwm
Txhawm rau txhim kho qhov tso zis tam sim no thiab cov zis hluav taws xob, ntau lub zog hloov hluav taws xob tuaj yeem siv ua ke. Thaum lub sijhawm ua haujlwm sib luag, qhov tso zis hluav taws xob ntawm txhua lub hwj chim adapter yuav tsum yog tib yam (lawv cov zis hluav taws xob tau tso cai sib txawv), thiab txoj kev sib koom tam sim no (tom qab no hu ua txoj kev sib faib tam sim no) tau txais los xyuas kom meej tias cov zis tam sim no ntawm txhua tus. fais fab adapter yog faib raws li qhov proportional coefficient.
Electromagnetic cuam tshuam lim
Electromagnetic cuam tshuam lim, tseem hu ua "EMI filter", yog cov khoom siv hluav taws xob hauv hluav taws xob siv los cuam tshuam electromagnetic cuam tshuam, tshwj xeeb tshaj yog nrov hauv cov kab hluav taws xob lossis cov kab hluav taws xob tswj. Nws yog cov cuab yeej lim dej uas tuaj yeem tiv thaiv lub suab nrov ntawm daim phiaj hluav taws xob thiab txhim kho kev tiv thaiv kev cuam tshuam ntawm cov khoom siv hluav taws xob thiab kev ntseeg tau ntawm lub cev. Electromagnetic cuam tshuam lim belongs rau bidirectional RF lim. Ntawm qhov tod tes, nws yuav tsum lim tawm cov khoom siv hluav taws xob sab nraud uas tau qhia los ntawm AC fais fab mov;
Ntawm qhov tod tes, nws tseem tuaj yeem zam lub suab nrov sab nraud cuam tshuam ntawm nws tus kheej cov cuab yeej, kom tsis txhob cuam tshuam rau kev ua haujlwm ib txwm muaj ntawm lwm cov khoom siv hluav taws xob hauv tib qhov chaw electromagnetic. EMI lim tuaj yeem cuam tshuam ob hom kev cuam tshuam thiab hom kev cuam tshuam. EMI lim yuav tsum txuas nrog AC nkag mus kawg ntawm lub hwj chim adapter.
radiator
Lub tshuab hluav taws xob siv hluav taws xob siv los txo qis kev ua haujlwm kub ntawm cov khoom siv hluav taws xob semiconductor, uas tuaj yeem zam lub raj tub ntxhais kub tshaj qhov kub siab tshaj qhov sib txuas vim tsis muaj cua sov dissipation, kom lub hwj chim adapter tuaj yeem tiv thaiv los ntawm overheating. Txoj kev ntawm tshav kub dissipation yog los ntawm cov tub ntxhais tub ntxhais, me me tshav kub dissipation phaj (los yog raj plhaub) > radiator → thaum kawg mus rau cov huab cua puag ncig. Muaj ntau hom radiators, xws li hom phaj tiaj, luam ntawv board (PCB), hom tav, hom interdigital thiab lwm yam. Lub radiator yuav tsum tau ceev kom deb ntawm qhov chaw kub xws li lub zog zaus transformer thiab lub hwj chim hloov raj kom deb li deb tau.
Electronic load
Cov qauv siv hluav taws xob muaj feem xyuam rau cov khoom siv hluav taws xob tshwj xeeb uas siv los ua lub zog tso zis load. Lub tshuab hluav taws xob tuaj yeem hloov kho dynamically nyob rau hauv kev tswj ntawm lub computer. Cov khoom siv hluav taws xob yog cov khoom siv hluav taws xob uas siv hluav taws xob los ntawm kev tswj hwm lub zog sab hauv (MOSFET) lossis cov khoom siv hluav taws xob (lub voj voog ua haujlwm) ntawm lub transistor thiab tso siab rau lub zog dissipated ntawm lub hwj chim raj.
fais fab xwm txheej
Lub zog qhov tseem ceeb yog cuam tshuam nrog qhov xwm txheej ntawm lub voj voog. Nws sawv cev rau qhov piv ntawm lub zog ua haujlwm rau lub zog pom tseeb.
kev kho lub zog
PFC luv luv. Lub ntsiab lus ntawm lub hwj chim kho tshuab yog: lub hwj chim yam (PF) yog qhov piv ntawm lub zog P mus rau qhov pom tseeb zog s. Nws txoj haujlwm yog ua kom AC cov tswv yim tam sim no nyob rau theem nrog AC input voltage, lim tawm cov kev sib haum xeeb tam sim no, thiab nce lub zog ntawm cov cuab yeej mus rau tus nqi kwv yees ze li 1.
Passive power factor kho
Passive power factor kho yog hu ua PPFC (tseem hu ua passive PFC). Nws siv passive Cheebtsam inductance rau kev kho lub zog. Nws Circuit Court yog qhov yooj yim thiab tus nqi qis, tab sis nws yog ib qho yooj yim los tsim cov suab nrov thiab tsuas tuaj yeem ua kom lub zog muaj zog txog li 80%. Lub ntsiab} qhov zoo ntawm kev kho lub zog passive yog: kev yooj yim, tus nqi qis, kev ntseeg siab thiab me me EMI. Qhov tsis zoo yog: qhov loj me thiab qhov hnyav, tsis yooj yim kom tau txais lub zog muaj zog, thiab kev ua haujlwm ntawm kev ua haujlwm muaj feem xyuam rau zaus, load thiab input voltage.
Kev kho lub zog muaj zog
Kev kho lub zog muaj zog yog hu ua APFC (tseem hu ua active PFC). Kev kho lub zog hluav taws xob yog hais txog kev ua kom muaj zog ntawm cov khoom siv hluav taws xob los ntawm kev siv hluav taws xob hluav taws xob (active circuit), thiab tswj cov cuab yeej hloov mus ua kom cov tswv yim tam sim no waveform ua raws li cov tswv yim voltage waveform. Piv nrog rau passive power factor kho Circuit Court (passive circuit), ntxiv inductance thiab capacitance yog complex, thiab kev txhim kho ntawm lub hwj chim factor yog zoo dua, tab sis tus nqi siab dua thiab kev ntseeg siab yuav raug txo. Ib lub zog hloov hluav taws xob tau ntxiv ntawm tus choj input rectifier thiab cov zis lim capacitor los kho cov tswv yim tam sim no rau hauv sine yoj nrog tib theem raws li cov tswv yim voltage thiab tsis muaj kev cuam tshuam, thiab lub zog tuaj yeem ncav cuag 0.90 ~ 0.99.
Post lub sij hawm: Apr-12-2022
