Chiwerengero cha zigawo za PCB chimadalira pamavuto a bolodi. Malinga ndi momwe PCB imagwirira ntchito, ma PCB angapo amapangidwa ndi ma “PCB angapo” kudzera pakupindika ndi kukanikiza. Komabe, kuchuluka kwa zigawo, masanjidwe okwanira ndi kusankhidwa kwa ma board angapo a PCB kumatsimikizika ndi wopanga PCB, wotchedwa “PCB stacking design”.

Zinthu zomwe ziyenera kuganiziridwa pakupanga kwa PCB

Chiwerengero cha zigawo ndi zigawo za kapangidwe ka PCB zimatengera izi:

1. Mtengo wa Hardware: Chiwerengero cha zigawo za PCB chikugwirizana mwachindunji ndi mtengo wotsiriza wa hardware. Kuchulukanso komwe kulipo, kukwera mtengo kwa zida kumakhala.

2. Kulumikizana kwamagawo osakanikirana kwambiri: magawo osakanikirana kwambiri omwe amaimiridwa ndi zida zopangira za BGA, zigawo zama waya zazigawo zotere zimazindikira magawo a bolodi ya PCB;

3. Kuwongolera mawonekedwe azizindikiro: kwa kapangidwe ka PCB yokhala ndi ziwonetsero zothamanga kwambiri, ngati cholinga chikuyang’ana kwambiri pamiyeso, pamafunika kuchepetsa kulumikizana kwa zigawo zoyandikira kuti muchepetse chopingasa pakati pazizindikiro. Pakadali pano, kuchuluka kwa zigawo za zingwe Mofananamo, ngati kuwongolera mawonekedwe azigawo sikofunikira, dongosolo loyandikana ndi zingwe lingagwiritsidwe ntchito kuchepetsa kuchuluka kwa zigawo za PCB;

4. Kutanthauzira kwa chizindikiritso: Kutanthauzira kwa ma siginolo kumatanthauza kudziwa Kulumikizana kwa PCB ndi “kosalala”. Kutanthauzira koyipa kwamalingaliro kudzatsogolera kulumikizana kosayenera kwa PCB ndikuwonjezera zigawo zama waya.

5. Kukonza mphamvu kwa PCB pakupanga momwe zakhalira lachitsanzo, etc.

Mapangidwe a PCB amafunikira kuyika patsogolo ndikuwongolera zonse zomwe zatchulidwa pamwambapa.

Malamulo onse pamapangidwe a PCB

1. Mapangidwe ndi mzere wosanjikiza uyenera kulumikizidwa mwamphamvu, zomwe zikutanthauza kuti mtunda pakati pa mapangidwe ndi mphamvu yamagetsi uyenera kukhala wocheperako momwe ungathere, ndipo makulidwe a sing’anga ayenera kukhala ochepa momwe angathere, kuti muwonjezere capacitance pakati pa chingwe chosanjikiza ndi kapangidwe kake (ngati simukumvetsa apa, mutha kulingalira za kutha kwa mbaleyo, kukula kwake ndikulingana mofanana ndi kutalika kwake).

2, zigawo ziwiri za siginecha momwe zingathere osati pafupi mozungulira, kosavuta kuwonetsa crosstalk, zimakhudza magwiridwe antchito.

3, yama board angapo osanjikiza, monga bolodi la 4 wosanjikiza, bolodi 6 wosanjikiza, zofunikira zonse za siginolo wazizindikiro momwe zingathere ndi wosanjikiza wamagetsi wamkati (wosanjikiza kapena wosanjikiza wamagetsi) moyandikira, kuti muthe kugwiritsa ntchito lalikulu Malo amkati opangira magetsi amkuwa kuti agwire nawo ntchito yoteteza ma siginolo, kuti apewe mtanda pakati pazizindikiro.

4. Pazingwe zazingwe zothamanga kwambiri, nthawi zambiri zimapezeka pakati pazigawo ziwiri zamagetsi zamkati. Cholinga cha izi ndikupereka chotchinga choteteza ma siginecha mbali imodzi, ndikuchepetsa ma liwiro othamanga pakati pamagawo awiri amagetsi amkati mbali inayi, kuti muchepetse kusokonekera kwa zigawo zina zama siginecha.

5. Ganizirani za kufanana kwa kapangidwe kake.

6. Malo angapo amagetsi amkati amatha kuchepetsa kutsekemera kwapansi.

Ndibwino kuti mukuwerenga

1. Mizere yolumikizana pakati podzipatula kumtunda ndi dera lomwe limafalitsa ndikulandila limalumikizidwa molumikizidwa ndi waya wambiri.

2. Ndege yapansi imayikidwa pansi pa mzere wama frequency frequency kuti izitha kuyendetsa bwino njira yolumikizira yolumikizirana ndikupatsanso njira yotsika kwambiri yotsatsira kubwerera kwanthawi.

3. Ikani chopangira magetsi pansi pa nthaka. Magawo awiri ofotokozerawa amapanga hf yodutsa capacitor pafupifupi 100pF / INCH2.

4. Zizindikiro zothamanga kwambiri zimakonzedwa mu ulusi wapansi. Mizere iyi ili ndi malire okulirapo othana ndi maimidance discontinuities oyambitsidwa ndi mabowo, potero amalola kusinthasintha kwakukulu.

Kodi mumamvetsetsa kapangidwe ka PCB

▲ Anayi wosanjikiza laminated mbale kapangidwe chitsanzo

Ngati zigawo zowonjezera zamagetsi (Vcc) kapena zigawo zama siginolo zikufunika, mphamvu yowonjezera yowonjezera yowonjezera iyenera kulumikizidwa mozungulira. Mwanjira iyi, mapangidwe ake opangidwa ndi laminated amakhazikika ndipo matabwa sawombana. Magawo amagetsi okhala ndi ma voltages osiyanasiyana amayenera kukhala pafupi ndi mapangidwe kuti achulukitse pafupipafupi kulambalala capacitance motero kupondereza phokoso.