Txoj kev xaim ntawm PCB multilayer board

Plaub- txheej Circuit Court board thaiv txoj kev 5: Feem ntau hais lus, plaub- txheej Circuit Court board tuaj yeem muab faib ua txheej sab saum toj, txheej hauv qab thiab ob txheej nruab nrab. Cov txheej saum toj kawg nkaus thiab txheej hauv qab yog txuas nrog cov kab teeb liab. Cov txheej txheem nruab nrab ua ntej siv ADD PLANE ntxiv INTERNAL PLANE1 thiab INTERNAL PLANE2 los ntawm cov lus txib DESIGN/LAYER STACK MANAGER raws li cov txheej txheem siv hluav taws xob feem ntau xws li VCC thiab cov txheej hauv av xws li GND (uas yog, txuas cov ntawv sib txuas sib txuas. siv ADD LAYER, uas yuav nce MIDPLAYER, uas feem ntau yog siv rau ntau - txheej teeb liab kab tso), kom PLNNE1 thiab PLANE2 yog ob txheej tooj liab txuas hluav taws xob VCC thiab hauv av GND. Yog tias muaj ntau qhov chaw siv hluav taws xob xws li VCC2, thiab lwm yam. lossis cov txheej hauv av xws li GND2, thiab lwm yam, ua ntej siv cov hlau tuab los yog sau FILL hauv PLANE1 lossis PLANE2 (lub sijhawm no, cov tawv nqaij tooj liab sib haum rau cov xaim lossis FILL tsis yog. muaj nyob, thiab cov xaim lossis FILL tuaj yeem pom pom tseeb tawm tsam lub teeb. Fill) txhawm rau txheeb xyuas thaj chaw dav dav ntawm lub zog hluav taws xob lossis hauv av (tsuas yog rau qhov yooj yim ntawm PLACE / SPLIT PLANE hais kom tom qab), thiab tom qab ntawd siv PLACE / SPLIT PLANE kom demarcate cheeb tsam nyob rau hauv cheeb tsam sib thooj ntawm INTERNAL PLANE1 thiab INTERNAL PLANE2 (ie VCC2 tooj liab thiab GND2 tooj liab daim ntawv, tsis muaj VCC nyob rau hauv lub cheeb tsam no nyob rau hauv tib lub PLANE) (nco ntsoov hais tias sib txawv network nto nyob rau hauv tib lub dav hlau yuav tsum tsis txhob overlap li ntau. raws li qhov ua tau 5. Cia SPLIT1 thiab SPLIT2 sib tshooj ob daim nyob rau hauv tib lub dav hlau, thiab SPLIT2 yog nyob rau hauv SPLIT1 Internally, ob blocks yuav txiav txiav txiav raws li ciam teb ntawm SPLIT2 thaum lub sij hawm phaj ua (SPLIT1 yog faib nyob rau hauv periphery ntawm SPLIT). Cia li ceev faj tias th e pads los yog vias nyob rau hauv tib lub rooj net li SPLIT1 thaum sib tshooj tsis txhob sim txuas nrog SPLIT1 hauv thaj tsam ntawm SPLIT2. tsis muaj teeb meem). Lub sijhawm no, cov vias nyob rau hauv cheeb tsam no tau txais kev txuas mus rau cov txheej txheem tooj liab ntawm cov txheej txheem no, thiab cov cuab yeej pins uas dhau los ntawm cov laug cam sab saud thiab qis, xws li DIP pob khoom thiab cov khoom sib txuas, yuav cia li tawm ntawm txoj kev. PLANE nyob rau thaj tsam no. Nyem DESIGN/SPLIT PLANES los saib txhua qhov SPLIT PLANES