Cov khoom siv hluav taws xob tas li hloov mus rau lub zog siab thiab kev ua haujlwm siab. Los ntawm kev them nyiaj rau lub tsheb hluav taws xob mus rau siab - lub zog hluav taws xob modules rau cov khoom lag luam, siab - cov ntawv siv hluav taws xob hluav taws xob tau muab cov kev xav tau nruj rau cov khoom nqa tam sim no. Thick tooj liab pcb boards tau dhau los ua ib qho kev txhawb nqa tseem ceeb kom ua tau raws li cov cai no vim lawv cov yam ntxwv zoo tam sim no.
Txhais thiab qhov zoo ntawmtuab tooj liab pcb board
Thick copper pcb board feem ntau yog hais txog lub rooj tsav xwm pcb nrog cov ntawv ci tooj liab ntau dua li cov pa 1oz (kwv yees li 35 μ m). Cov tuab tuab xws li 2oz (txog 70 μ m), 3oz (kwv yees li 105 μ m), 4oz (li 140 μ m), thiab lwm yam. Piv nrog rau cov pcb boards zoo tib yam, tuab tooj liab pcb boards muaj qhov zoo ntawm cov khoom nqa tam sim no. Raws li Ohm Txoj Cai, cov cua sov tsim tawm thaum tam sim no dhau los ntawm tus neeg xyuas pib yog proportional rau nws qhov tsis kam, thaum qhov kev tiv thaiv yog inversely proportional rau tus ntoo khaub lig -sectional cheeb tsam ntawm tus neeg xyuas pib. Thick tooj liab pcb boards, vim yog cov ntawv ci tooj liab tuab dua thiab cov ntoo khaub lig loj dua - thaj tsam ntawm cov neeg xyuas pib, tau txo qis tsis kam thiab tuaj yeem nqa cov dej ntws loj dua, txo cov hluav taws xob poob thiab cov cua sov tshwm sim hauv Circuit Court.
Yam tseem ceeb cuam tshuam txog kev nqa nqa tam sim no
Copper foil thickness: Copper foil thickness yog qhov tseem ceeb ntawm kev txiav txim siab nqa tam sim no. Tus txheej txheem IPC-2221 muab cov qauv qhia txog kev suav cov peev txheej tam sim no ntawm pcb cov cim hauv ib puag ncig tus qauv (ambient kub ntawm 25 ° C, qhov siab tshaj plaws kub nce ntawm 10 ° C): I=}k × (Wb × Tc), qhov twg kuv yog qhov siab tshaj plaws tam sim no, W yog cov hlau dav, T thiab conpical thickness, conical thickness. (nyob ntawm seb nws yog ib qho sab hauv lossis txheej txheej). Nws tuaj yeem pom meej los ntawm cov qauv uas, nyob rau hauv lwm qhov xwm txheej tas li, qhov nce ntawm tooj liab ntawv ci thickness ho txhim kho lub peev xwm nqa tam sim no. Piv txwv li, 1oz tooj liab tuab feem ntau tuaj yeem nqa tam sim no txog 1A / mm, thaum lub 2oz tooj liab thickness ho nce nws lub peev xwm nqa tam sim no.
Hlau dav: Hlau dav kuj muaj qhov cuam tshuam loj rau lub peev xwm nqa tam sim no. Ib txoj kab dav dav tuaj yeem muab txoj hauv kev loj dua tam sim no, txo qhov ceev tam sim no, thiab txo qis kev tsim hluav taws xob. Nyob rau hauv cov tswv yim engineering, raws li qhov dav ntawm cov xaim nce, lub peev xwm nqa tam sim no ntawm pcb txhim kho, tab sis nws tsis yog nruj me ntsis rau linear nce, tab sis qhov nce maj mam txo. Piv txwv li, nyob rau hauv qhov kub nce ntawm 10 ° C, lub rooj tsav xwm Circuit Court nrog lub thickness ntawm 1oz tooj liab thiab hlau dav ntawm 100mil (2.5mm) tuaj yeem dhau qhov tam sim no ntawm 4.5A. Raws li qhov dav hlau dav ntxiv, qhov ceev ntawm kev nqa tam sim no muaj peev xwm txhim kho qeeb.
Environmental kub thiab kub dissipation tej yam kev mob: Qhov cuam tshuam ntawm ib puag ncig kub thiab kub dissipation tej yam kev mob ntawm lub peev xwm nqa tam sim no ntawm tuab tooj liab pcb boards yuav tsis raug ignored. Thaum lub ambient kub nce, hluav taws xob resistivity ntawm tooj liab nce, cov kab kuj nce, thiab ntau cua sov yog generated nyob rau hauv tib lub tam sim no. Cov cua kub zoo, xws li ntxiv cov dab dej kub, siv cov cua txias los yog kua txias, tuaj yeem txo qhov kub ntawm lub pcb board thiab txhim kho nws cov peev xwm nqa tam sim no. Piv txwv li, nyob rau hauv siab -cov khoom siv hluav taws xob hluav taws xob, txhim kho qhov loj- thaj chaw tshav kub ntawm cov tuab tooj liab pcb boards thiab siv cov kiv cua rau cua txias tuaj yeem txhim kho lawv lub peev xwm nqa tam sim no hauv siab - qhov kub thiab txias thiab ua kom ruaj khov ntawm cov khoom siv.
Kev suav thiab kev ntsuam xyuas ntawm lub peev xwm nqa tam sim no
Kev xam raws li tus qauv qauv: Raws li tau hais ua ntej hauv IPC-2221 tus qauv qauv, nrog paub txog tooj liab ntawv tuab, hlau dav, thiab kev txiav txim siab seb lub rooj tsav xwm hauv Circuit Court yog ib txheej sab hauv lossis txheej txheej, lub peev xwm nqa tam sim no tuaj yeem kwv yees ua ntej. Tab sis cov qauv no tau muab los ntawm cov qauv ib puag ncig tshwj xeeb, thiab hauv kev siv tswv yim, cov txiaj ntsig suav yuav tsum raug kho raws li cov xwm txheej xws li ib puag ncig qhov kub thiab txias dissipation.
Simulation tsom xam: Kev tshaj lij hluav taws xob tsim hluav taws xob software tuaj yeem siv los simulate qhov tam sim no nqa qhov teeb meem ntawm tuab tooj liab pcb boards. Los ntawm kev tsim cov qauv Circuit Court kom raug thiab teeb tsa tsis xws li tam sim no, qhov kub thiab txias, thiab cua sov dissipation raws li kev ua haujlwm tiag tiag, software tuaj yeem ua rau pom kev faib tawm tam sim no ntawm pcb pawg thawj coj saib, qhov kub hloov pauv hauv ntau qhov chaw, thiab cov chaw muaj peev xwm hotspot, muab cov ntaub ntawv muaj tseeb thiab cov ncauj lus kom ntxaws txog kev ntsuas lub peev xwm nqa tam sim no.
Kev sim thiab kev txheeb xyuas qhov tseeb: Thaum lub sij hawm tsim cov khoom lag luam, ua cov qauv thiab ua qhov kev sim tiag tiag yog cov kauj ruam tseem ceeb hauv kev txheeb xyuas lub peev xwm nqa tam sim no. Los ntawm kev siv cov qib sib txawv ntawm cov qauv tam sim no, kev soj ntsuam tsis xws li kev hloov pauv kub thiab qhov hluav taws xob hluav taws xob poob ntawm lub rooj tsavxwm pcb, muab piv nrog cov theoretical xam thiab simulation cov txiaj ntsig, ntxiv optimizing tus tsim kom ntseeg tau tias tuab tooj liab pcb boards tuaj yeem ua tau raws li qhov yuav tsum tau nqa tam sim no hauv kev siv tswv yim.
Tam sim no nqa kev ua tau zoo hauv daim ntawv thov scenarios
Cov khoom siv hluav taws xob hluav taws xob: tuab tooj liab pcb boards ua lub luag haujlwm tseem ceeb hauv siab - lub zog hluav taws xob cov khoom siv hluav taws xob xws li lub zog hluav taws xob thiab chaw nres tsheb fais fab. Ua piv txwv li lub tsheb fais fab tsheb them nqi hluav taws xob, lawv lub zog them hluav taws xob tau nce ntxiv, txij li ob peb kilowatts thaum ntxov mus txog kaum ntawm kilowatts lossis ntau dua hnub no. Txhawm rau kom ruaj khov thiab ua haujlwm tau zoo ntawm qhov tam sim no, lub zog hluav taws xob hauv lub chaw nres tsheb them nyiaj feem ntau siv cov tooj liab pcb tuab. Yog tias 4oz tuab tooj liab pcb pawg thawj coj siv, ua ke nrog cov qauv tsim hluav taws xob tsim nyog, nws tuaj yeem nqa tau ntau pua amperes ntawm kev them nyiaj tam sim no, kom ntseeg tau tias lub chaw them nyiaj tuaj yeem them cov tsheb hluav taws xob sai thiab ntseeg tau.
Industrial Control thiab Automation: High power motor drives, zaus converters, thiab lwm yam khoom siv hauv kev lag luam ib puag ncig yuav tsum muaj kev ntseeg siab vim lawv cov kev khiav hauj lwm loj. Thick tooj liab pcb boards, nrog lawv lub peev xwm nqa tam sim no thiab lub zog zoo, tuaj yeem ua haujlwm ruaj khov hauv thaj chaw muaj kev lag luam. Hauv cov tshuab tsav loj loj, siv cov tuab tooj liab pcb boards raws li kev tswj xyuas Circuit Court thiab cov hluav taws xob xa hluav taws xob tuaj yeem txo cov kab tsis ua haujlwm los ntawm ntau dhau tam sim no, txhim kho cov khoom ruaj khov thiab kev ua haujlwm ntau lawm.
Kev sib txuas lus hauv paus chaw nres tsheb fais fab system: Nrog rau qhov nrov ntawm 5G kev sib txuas lus thev naus laus zis, lub zog xav tau ntawm kev sib txuas lus hauv paus chaw nres tsheb tau nce ntxiv. Lub hauv paus chaw nres tsheb fais fab yuav tsum muaj lub rooj tsav xwm pcb muaj peev xwm nqa tau cov khoom siv hluav taws xob siab kom ntseeg tau tias lub zog ruaj khov. Daim ntawv thov ntawm cov tuab tooj liab pcb boards hauv kev sib txuas lus hauv paus chaw nres tsheb fais fab modules tuaj yeem ua tau raws li lawv cov kev xav tau siab tam sim no, thaum ua haujlwm zoo ntawm cov cua kub dissipation pab txo cov cuab yeej kub, txhim kho kev ntseeg tau thiab kev pabcuam lub neej ntawm lub zog hluav taws xob, thiab xyuas kom 24-teev tsis muaj kev cuam tshuam ntawm kev sib txuas lus hauv paus chaw nres tsheb.
Cov ntsiab lus tseem ceeb ntawm kev nqa tam sim no rau tuab tooj liab pcb board
Tsim nyog cov phiaj xwm thaiv: Thaum tsim cov tuab tooj liab pcb boards, qhov ntev ntawm cov kab hluav taws xob siab tam sim no yuav tsum tau luv luv kom ntau li ntau tau los txo qhov kev tiv thaiv hluav taws xob thiab inductance. Nyob rau tib lub sij hawm, tsis txhob ntse tig los yog nqaim bottlenecks nyob rau hauv txoj kab los xyuas kom meej txoj kev du tam sim no. Thaum siv ntau- txheej board tsim, nws yog ib qho tseem ceeb los faib lub hwj chim thiab cov txheej hauv av kom tsim nyog, txhim kho txoj hauv kev tam sim no, thiab sib npaug tam sim no.
Ua kom tus lej ntawm qhov los ntawm qhov: Hauv ntau- txheej tuab tooj liab pcb boards, los ntawm qhov yog cov channel tseem ceeb rau kev sib txuas sib txawv ntawm cov ntawv ci tooj liab. Tsim nyog nce tus naj npawb ntawm vias tuaj yeem txo qhov kis tau tus mob tam sim no ntawm cov khaubncaws sab nraud povtseg, sib npaug ntawm qhov kev faib tawm tam sim no, thiab txo qhov teeb meem ntawm qhov hnyav hauv zos tam sim no. Piv txwv li, nyob rau hauv high tam sim no routing cheeb tsam, teem ntau vias ntawm tsis tu ncua ncua sij hawm los tsim ib tug ntawm array yuav ho txhim kho lub peev xwm nqa tam sim no.