Mazuva ano, maitiro ekuwedzera compact ezvigadzirwa zvemagetsi anoda kugadzirwa kwematatu-matatu ehuwandu hwehuwandu hwehuwandu hwakadhindwa matunhu ematunhu. Nekudaro, layer inosimudza zvinomutsa nyaya nyowani zvine chekuita nemaonero emugadziriro aya. Rimwe rematambudziko nderokuwana yakakwirira-yemhando yakarongedzwa kuvaka chirongwa.
Sezvinongowedzera kudhindwa matunhu anoumbwa nezvematunhu akawanda anogadzirwa, kuiswa kwePCBS kwakakosha zvakanyanya.
Iyo yakanaka PCB stack dhizaini yakakosha kuderedza radiation yePCB zvishwe uye zvine hukama nematunhu. Kusiyana neizvozvo, kuunganidzwa kwakaipa kunogona kuwedzera zvakanyanya radiation, iyo inokuvadza kubva pakuchengetedza maonero.
Chii chinonzi PCB stackup?
Pamberi pekupedzisira kugadzirwa kwapera, iyo PCB stackup inoratidzika kuti insulator uye yemhangura yePCB. Kukudziridza Kubudirira Kugadziriswa chiitiko chakaoma. PCB inobatanidza simba uye masaini pakati pemidziyo yemuviri, uye iyo chaiyo yekuisa yedunhu board zvinhu zvakananga zvinobata basa rayo.
Nei tichifanira kuseta PCB?
Iko kuvandudzwa kwePCB stackup kwakakosha pakugadzira mapato wedunhu anobudirira. PCB Stackup ine zvakawanda zvakanaka, nekuti iyo yakawanda chimiro chinogona kuvandudza kugoverwa kwesimba, kudzivirira electromagnic kukanganiswa, muganho wekuvhiringidzika kwekuvhiringidza, uye kutsigira yakakwirira-kumhanya chiratidzo kutumira chiratidzo.
Kunyangwe chinangwa chikuru chekusveta ndechekuisa matunhu akawanda pane imwe bhodhi kuburikidza nemaruva akawanda, chimiro chakasimudzwa chePCBS chinopawo zvimwe zvakanakira zvibodzwa zvakakosha. Aya matanho anosanganisira kurerutsa kusagadzikana kwemabhodhi ematunhu kune ruzha rwekunze uye kuderedza crosstalk uye kutadza matambudziko mune yakakwirira-yekumhanyisa masisitimu.
Iyo yakanaka PCCKUP inogona zvakare kubatsira kuve nechokwadi chekupedzisira chekugadzira mari yekugadzira. Nekuwedzera kushanda zvakanaka uye nekuvandudza iyo electromagnetic kuwirirana kweiyo purojekiti yese, PCB inobata inogona kuita zvinobudirira kuchengetedza nguva nemari.
Kutarisira uye mitemo yePCB Laminate Dhizaini
● Nhamba yezvikamu
Kugadziriswa kuri nyore kunogona kusanganisira mana-layer PCBs, nepo mamwe mabhodhi akaomarara achida kuongororwa kwehunyanzvi. Kunyangwe kuomarara, huwandu hwepamusoro hwezvigadziko hunobvumira magadziri kuti uve nehuremu nzvimbo pasina kuwedzera njodzi yekusangana nekusangana nemhinduro dzisingaiti.
Kazhinji, masere masere kana anopfuura anodikanwa kuti awane iyo yakanakisa gadziriro gadziriro uye kupatsanurana kuti uwedzere kushanda. Uchishandisa zvirongwa zvemhando yepamusoro uye ndege dzekugadzira pane maWakawanda mabhodhi anogona zvakare kuderedza radiation.
● Kuronga kweLayer
Iyo gadziriro yemhangura layer uye denderedzwa rekusimbisa rinogadzira dunhu rinotiza pcb yakawedzera kushanda. Kuti udzivise PCB warping, inodikanwa kuti iite chikamu chebhodi yebhodhi symmetrical uye zvine mwero kana uchiisa matura. Semuenzaniso, mubhodhi rechisere-redhi, ukobvu hwechipiri uye rechinomwe zvigadziko zvinofanirwa kunge zvakafanana kuti uwane mwero wakanakisa.
Iyo signal layer inofanira kugara iri padyo nendege, nepo ndege yemagetsi uye ndege yemhando yeriyo yakabatanidzwa pamwe chete. Izvo zvakanaka kushandisa akawanda mapepa ekutanga, nekuti kazhinji anoderedza radiation uye akaderedza ivhu kusakundikana.
● Layer zvinyorwa zvemhando
Iyo inopisa, michina, uye yemagetsi zvivakwa zveumwe neumwe substrate uye maitiro anofambidzana akakosha kune sarudzo yePCB Laminate zvinhu.
Dunhu redunhu rinowanzoumbwa neine yakasimba girazi fiber substrate Core, iyo inopa ukobvu uye kuomarara kwePCB. Dzimwe dzinochinja prbs dzinogona kugadzirwa nemapurasitiki ekushisa-tembiricha.
Iyo sosi yepasi ndeye yakaonda foil yakagadzirwa nemhapuru foil yakabatanidzwa nebhodhi. Copper iripo pamativi ese maviri ePCE akapetwa kaviri PCB, uye ukobvu hwemhangura inosiyana zvichienderana nehuwandu hwehuwandu hwePCB stack.
Dhavhara pamusoro peiyo mhangura foil ine mutengesi maski kuti iite iyo mhangura inoteedzera mamwe mitezo. Izvi zvinhu zvakakosha kubatsira vashandisi kudzivirira kutengesa nzvimbo chaiyo yejumper waya.
A screen yekudhinda inoiswa paMask yemutengesi kuti awedzere zviratidzo, nhamba uye mavara ekufambisa gungano uye kubvumira vanhu kuti vanzwisise zviri nani bhodhi redunhu.
● Sarudza wiring uye kuburikidza nemakomba
Vagadziri vanofanira kufambisa miganho yakakwira-mhanya pane yepakati dhiza pakati pezvikamu. Izvi zvinotendera kuti ndege yepasi yekupa kuchengetedza iyo ine radiation yakaburitswa kubva kune track kumhanyisa kumhanya.
Iko kuiswa kwechiratidzo cheSignal pedyo nenzvimbo yendege kunotendera kudzoka ikozvino kuyerera mune yepedyo ndege, nekudaro kuderedza nzira yekudzoka. Iko hakuna kukwana kwakakwana pakati pevhu kune simba simba uye pasi pezvirongwa zvekupa decopling pazasi 500 MHZ uchishandisa maitiro ekuvaka ekuvaka.
● Kupararira pakati pezvikamu
Nekuda kweiyo yakaderedzwa capacitance, yakasimba compling pakati pechiratidzo uye ndege yazvino yekudzoka ndeyekutsoropodza. Simba uye ndege dzinofanirawo kuve dzakabatanidzwa pamwe chete.
Iyo madimikira emagetsi inofanirwa kugara iri pedyo nemumwe kunyangwe ivo vari munzvimbo dziri padyo. Tight Coupling uye kupatsanurana pakati pezvikamu kwakakosha kune zvisingaverengeki zviratidzo uye zvakazara kushanda.
kuputa
Kune akawanda akasiyana mitezo PCB Board Designs muPCB Stacking Technology. Kana akawanda marongero akabatanidzwa, nzira nhatu-dzemukati dzinotarisa mamiriro emukati uye mamiriro ekumusoro anofanira kunge achisanganiswa. Nekumhanya kwakakwirira kwemazondo emazuva ano, nekuchenjera PCB stack-up dhizaini inofanira kuitwa kugadzirisa mukugovera kugona uye kudzikisira. Iyo isina kunyatsogadzirwa PCB inogona kuderedza kusaina chiratidzo, kufambisa simba, kusimba kwemasimba, uye kuvimba kwenguva refu.