Kuwanda kwezvikamu zvePCB zvinoenderana nekuoma kweiyo circuit board. Kubva pakuona kwePBB yekugadzirisa, yakawanda-yakaturikidzana pcb inogadzirwa neakawanda “maviri mapaneru pcb” kuburikidza nekuisira uye kudzvanya maitiro. Nekudaro, iyo nhamba yematanho, kuisira kuteedzana uye bhodhi kusarudzwa kwemazhinji-masenduru pcb anotemerwa neiyo PCB dhizaini, iyo inonzi “PCB stacking dhizaini”.

Zvinhu zvinofanirwa kutariswa muPCB Cascade dhizaini

Kuwanda kwezvikamu uye kuiswa kwePCB dhizaini kunoenderana nezvinotevera zvinhu:

1. Hardware mutengo: Huwandu hwePCB masheya hwakanangana zvakananga neyekupedzisira Hardware mutengo. Iyo yakawanda marara iripo, iyo yakakwira iyo mutengo wehadhi uchave uri.

2. Wiring yezvakakura-zvinongedzo zvikamu: zvakakwirira-zviyero zvikamu zvinomiririrwa neBGA yekupakata zvishandiso, iwo wiring matete ezvakadai zvinhu zvinonyanya kuona iwo wiring matete ePCBboard bhodhi;

3. Signal kudzora kwemhando yepamusoro: yePCB dhizaini ine yakakwira yekumhanyisa chiratidzo musanganiswa, kana iko kutarisisa kuri pachiratidzo chemhando, zvinodikanwa kudzikisa wiring yematanho epedyo kudzikisira crosstalk pakati pezviratidzo. Panguva ino, iyo reshiyo yewiring akaturikidzana uye mareferensi akaturikidzana (Ground rukoko kana Simba rukoko) ndiyo yakanakisa 1: 1, izvo zvinokonzeresa kuwedzera kwePCB dhizaini matanda. Zvakare, kana chiratidzo chemhando yekutonga chisiri chekumanikidza, iri padyo newiring layer scheme inogona kushandiswa kudzikisa huwandu hwePCB akaturikidzana;

4. Schematic chiratidzo tsananguro: Schematic chiratidzo tsananguro ichaona kana pcb wiring iri “akatsetseka”. Yakashata schematic chiratidzo tsananguro inotungamira kune isiriyo pcb wiring uye kuwedzera kwematanda wiring.

5.PcBB inogadzira yekugadzirisa chinzvimbo chekutanga: iyo stacking dhizaini (kuisira nzira, kuisira ukobvu, nezvimwewo) yakapihwa nePCB yekugadzira inofanirwa kutora yakazara nhoroondo yePCB inogadzira yekugadzirisa chinzvimbo chekutanga, senge yekugadzirisa maitiro, kugadzirisa michina kugona, inowanzo shandiswa pcb ndiro modhi, nezvimwe.

PCB inokanda dhizaini inoda kuisa pamberi uye kuenzanisa zvese zviri pamusoro dhizaini dhizaini.

General mitemo yePcB Cascade dhizaini

1. Iko kuumbwa uye chiratidzo chesaini chinofanira kunge chakabatanidzwa zvakabatana, zvinoreva kuti nhambwe iri pakati pekuumbwa neyakaganhurwa yemagetsi inofanira kunge iri diki sezvinobvira, uye ukobvu hwepakati hunofanira kuve hudiki sezvinobvira, kuti uwedzere capacitance pakati pesimba resimba uye chimiro (kana iwe usinganzwisise pano, unogona kufunga nezve iyo capacitance yeplate, saizi yeiyo capacitance inopindirana zvakaenzana kune iyo nzvimbo).

2, maviri masaisai akaturikidzana sezvinobvira kwete akananga padhuze, zviri nyore kuratidza chiratidzo checrosstalk, inokanganisa mashandiro edunhu.

3. nharaunda yemukati megetsi rukoko mhangura kupfeka kutora chinhanho mukudzivirira chiratidzo cheyadhi, kuitira kuti unyatso dzivirira crosstalk pakati pechiratidzo cheyero.

4. Yeiyo-yekumhanyisa chiratidzo chiratidzo, inowanzo kuve iri pakati pemaviri mativi emagetsi emukati. Chinangwa cheichi ndechekupa ino dziviriro inoshanda yeanodzivirira-kumhanya-mhanya kune rumwe rutivi, uye kudzikamisa masipidhi anomhanyisa-mhanya pakati pezvikamu zviviri zvemagetsi zvemukati kune rimwe divi, kuti kudzikise kupindirana kwemamwe maratidziro emasaini.

5. Funga nezve symmetry yeiyo cascade mamiriro.

6. Multiple grounding zvemukati zvemagetsi zvidimbu zvinogona kunyatso deredza pasi impedance.

Yakurudzira Cascading chimiro

1. Iyo mitsara yedata iri pakati peyedenga yega uye inopfuudza uye inogamuchira redunhu yakabatana zvakananga neakakwira frequency wiring.

2. Ndege yepasi inoiswa pazasi peiyo yakakwira frequency chiratidzo tambo yekudzora iyo impedance yeiyo yekufambisa yekubatanidza mutsara uye zvakare inopa yakaderera kwazvo inductance nzira yeiyo kudzoka ikozvino kuyerera kuburikidza.

3. Isa simba rekugovera pasi pevhu pasi. Iwo maviri mareferenzi akaturikidzana anoumba imwe yekuwedzera hf yekupfuura capacitor ye ingangoita 100pF / INCH2.

4. Zviratidzo zvekudzora-zvekumhanyisa zvakarongedzwa muzasi kwetambo. Iyi mitsara ine muganho wakakura wekumira impedance discontinuities inokonzerwa nemakomba, nokudaro ichibvumira kushanduka kukuru.

Unogona here kunzwisisa pcb Cascade dhizaini

▲ Four-rukoko laminated ndiro dhizaini muenzaniso

Kana mamwe magetsi emagetsi (Vcc) kana masheya echiratidzo achidikanwa, iyo yekuwedzera yechipiri magetsi magetsi / dura inofanirwa kuve yakarongedzwa zvakaenzana. Nenzira iyi, chimiro chakarongedzwa chakatsiga uye mabhodhi haazosoni. Iwo materu emagetsi ane akasiyana voltages anofanirwa kuve padyo nekuumbwa kuti awedzere iyo yakakwira frequency yekupfuura capacitance uye nekudaro inodzvinyirira ruzha.