Igishushanyo cyarakaye cyane gikurikiza amategeko abiri:
1. Buri wese ufite inzitizi agomba kuba afite urwego rwerekezo rwegeranye (imbaraga cyangwa urwego rwo hasi);
2. Imbaraga zingenzi zamashanyarazi nubutaka bigomba kubikwa ku ntera ntarengwa kugirango utange ubushobozi bunini;
Ibikurikira byerekana ibirindiro bivuye mu kibaho cyimigabane ibiri kugeza ku kinama cyinama umunani urugero Ibisobanuro:
1. Gukoresha intebe imwe ya PCB hamwe n'inama ebyiri na PCB
Ku mbaho ebyiri, kubera umubare muto wibice, ntakibazo kikiriho. Igenzura ry'imirasire ya EMI ifatwa cyane cyane n'intwaro n'imiterere;
Guhuza amagorofa ahuza imbaho imwe n'imbaho ebyiri hamwe nimbaho ebyiri zahindutse cyane kandi zikomeye. Impamvu nyamukuru yo kumenya iyi ngingo nuko agace k'ibimenyetso ari binini cyane, bidatanga gusa imirasire ikomeye, ariko nanone ituma umuzunguruko yunvikana no kwivanga hanze. Kugirango utezimbere electromagnetic guhuza byumuzunguruko, inzira yoroshye ni ukugabanya agace k'ikimenyetso cyingenzi.
Ikimenyetso cyingenzi: Ukurikije ibisobanuro bya electromagnetic, ibimenyetso byingenzi bivuga cyane cyane ibimenyetso bitanga imirasire ikomeye nibimenyetso byumva isi. Ibimenyetso bishobora kubyara imirasire ikomeye mubisanzwe byerekana ibimenyetso byigihe, nkibimenyetso bike byamasaha cyangwa aderesi. Ibimenyetso byunvikana no kwivanga ni ibimenyetso bya analog hamwe ninzego zo hasi.
Ikibaho kimwe na kabiri-cyimikorere gikoreshwa muburyo buke-bwinkari munsi ya 10khz:
1) Imbaraga Zikaba kuri Omsier imwe irazunguruka, kandi uburebure bwumurongo bugabanuka;
2) Mugihe bakoresha imbaraga nubutaka insinga, bagomba kuba hafi; Shira insinga yubutaka kuruhande rwinsinga yingenzi yerekana, kandi iyi nsike yubutaka igomba kuba hafi ishoboka kubireba. Muri ubu buryo, hashyizweho agace gato kwose kashizeho imirasire itandukanye muburyo bwo hanze bwo hanze bwagabanutse. Iyo insinga yubutaka yongewe kuruhande rwibimenyetso, loop hamwe nigice gito. Ikimenyetso cyanyuma rwose kizafata iyi loop aho kubandi.
3) Niba ari akanama gakumiwemo kabiri, urashobora gushira insinga yubutaka kumurongo wibimenyetso kurundi ruhande rwinama yumuzunguruko, ako kanya munsi yumurongo wibimenyetso, kandi umurongo wambere ugomba kuba yagutse bishoboka. Agace ka loop gashize muri ubu buryo kingana nu mubyimba wumuzunguruko kigwizwa nuburebure bwikimenyetso.
Bibiri na bine-bine laminates
1. SIG-GND (PWR) -Pwr (gnd) -ig;
2. GND-SIG (PWR) -Sig (PWR) -gnd;
Ku miyoboro ibiri yavuzwe haruguru, ikibazo gishobora kuba gisanzwe 1.6mm (62mil) ubunini. Umwanya wa laser uzaba munini cyane, ntabwo ari ibintu bitameze neza byo kugenzura, guhuza no gukingira no gukingira; Cyane cyane umwanya munini hagati yimbaraga zubutegetsi zigabanya ubushobozi bwinama kandi ntabwo ifasha kurusaku.
Kuri gahunda yambere, mubisanzwe ikoreshwa mubihe aho hari chipi nyinshi. Ubu bwoko bwa gahunda irashobora kubona neza si imikorere, ntabwo ari byiza cyane kumikorere ya EMI, ahanini igomba kugenzura kubinyobwa nibindi bisobanuro. Icyitonderwa nyamukuru: Igice cyubutaka gishyizwe kumurongo uhuza igice cyibimenyetso hamwe nikimenyetso cyisuka, gifite akamaro ko gukuramo no guhagarika imirasire; Ongera ubuso bwubuyobozi kugirango ugaragaze ubutegetsi bwa 20h.
Kubisubizo bya kabiri, mubisanzwe bikoreshwa aho ubucucike bwa chip ku kibaho buke bihagije kandi hari ahantu hahagije hirya no hino). Muri iyi gahunda, urwego rwo hanze rwa PCB ni urwego rubi, kandi ibice bibiri biri hagati ni ibimenyetso / amashanyarazi. Imbaraga zoherejwe kumwanya wibimenyetso ziyobowe numurongo mugari, zirashobora gutuma inzira ibangamiye amashanyarazi ari hasi, kandi intego yibimenyetso byumurongo wibimenyetso nabyo, hamwe nimirasire yimbere kandi ikingiwe murwego rwo hanze. Dukurikije kugenzura EMI, iyi niyo miterere 4-ya pcb iboneka.
Icyitonderwa nyamukuru: Intera iri hagati yibimenyetso bibiri byikimenyetso no kuvanga imbaraga bigomba kwagurwa, kandi icyerekezo cyinshi kigomba kuba gihagaritse kwirinda kugabanuka; Agace k'Inama y'Ubutegetsi kagomba kugenzurwa neza kugirango tugaragaze ubutegetsi bwa 20h; Niba ushaka kugenzura impongano, igisubizo cyavuzwe haruguru kigomba kwitonda cyane kugirango witondere insinga zateguwe munsi yizinga ryumuringa kububasha no guhagarara. Byongeye kandi, umuringa ku mashanyarazi cyangwa urwego rwo hasi bigomba guhuzwa cyane bishoboka kugirango DC na Frequency-Frequenction.
Bitatu, bitandatu-laminate
Kubishushanyo hamwe nubucucike bwisumbuye hamwe nisaha yo hejuru, igishushanyo 6 cyamaguru bigomba gusuzumwa, kandi uburyo bwo gufatanya burasabwa:
1. SIG-GND-SIG-PWR-GND-SIG;
Kuri gahunda yubu bwoko, ubu bwoko bwa gahunda yo gutangiza irashobora kubona ubunyangamugayo bwiza, urwego rwikimenyetso rwegeranye nubutaka, hamwe nubutaka bwa magneric bugenzurwa neza, kandi igice cya magneric. Kandi iyo amashanyarazi nubutaka budahwitse, birashobora gutanga inzira nziza yo kugaruka kuri buri kimenyetso.
2. GND-SIG-GND-PWR-SIG -GND;
Kuri gahunda yubu bwoko, ubu bwoko bwa gahunda ibereye gusa uko ibintu bifite hejuru cyane, ubu bwama bufite ibyiza byose byo hejuru, kandi indege yubutaka ya ecmination yuzuye, ishobora gukoreshwa nkikibuga cyiza cyo gukingira. Twabibutsa ko urwego rwimbaraga rugomba kuba hafi yumurongo utari ikintu nyamukuru kigaragara, kuko indege yo hepfo izaba yuzuye. Kubwibyo, Imikorere ya EMI iruta igisubizo cyambere.
Incamake: Kuri gahunda yinama esheshatu, intera iri hagati yububasha nubutaka bigomba kugabanywa kugirango ubone imbaraga nubutegetsi. Ariko, nubwo ubunini bwinama ni 62mil kandi intera ndende kandi ntabwo byoroshye kugenzura intera iri hagati yububasha bwimbaraga hamwe nubutaka buke cyane. Kugereranya gahunda yambere hamwe na gahunda ya kabiri, ikiguzi cya gahunda ya kabiri kiziyongera cyane. Kubwibyo, mubisanzwe duhitamo inzira yambere iyo duhagaze. Iyo ushushanyije, ukurikire amategeko 20h hamwe nibishushanyo mbonera.
Bane na umunani laminates
1. Ntabwo aribwo buryo bwiza bwo gufata neza kubera amagorofa make ya electronagnetic hamwe nimikorere minini yamashanyarazi. Imiterere yayo niyi ikurikira:
1.Igice cya 1 hejuru, Microstrip Wiring Layer
2. Ikimenyetso 2 Microstrip Wiring Layer, Ibyiza Wiring Layer (X Icyerekezo)
3. Ubutaka
4. Ikimenyetso 3 umurongo wa routine, inzira nziza ya routing (y icyerekezo)
5.Signal 4 yerekana inzira
6.Urugombe
7. Ikimenyetso 5 by'imbere muri microstrif winyo
8.Ingirakamaro 6 microsprif clayer
2. Nuburyo butandukanye muburyo bwa gatatu bwo gufata. Bitewe no kongeramo urwego, ifite imikorere myiza ya EMI, kandi ibanga riranga buri kimenyetso gishobora kugenzurwa neza
1.Ibice bibiri bigize, Microstrip Wiring Layer, Ikibanza cyiza
2. Stratum yubutaka, ibyiza bya electromagnetic ubushobozi bwo kwinjiza
3. Ikimenyetso 2 umurongo wa routine, inzira nziza
4.
6.Signal 3 umurongo wa routine, routing nziza
7. Imbaraga Stratum, hamwe namashanyarazi manini
8.GighInsal 4 microstrip Wiring Layer, Ikibanza cyiza
3. Uburyo bwiza bwo gufatanya, kubera gukoresha indege nyinshi zisumbuye, ifite ubushobozi bwiza bwo guhuza geomagnetic.
1.Ibice bibiri bigize, Microstrip Wiring Layer, Ikibanza cyiza
2. Stratum yubutaka, ibyiza bya electromagnetic ubushobozi bwo kwinjiza
3. Ikimenyetso 2 umurongo wa routine, inzira nziza
4.Ibyapa bifite imbaraga, gushiraho electronagnetike nziza yo kwinjiza hasi hepfo ya 5. Igice cyubutaka
6.Signal 3 umurongo wa routine, routing nziza
7. Stratum yubutaka, ibyiza bya electromagnetic ubushobozi bwo kwinjiza
8.GighInsal 4 microstrip Wiring Layer, Ikibanza cyiza
Nigute wahitamo ibice bikoreshwa mubishushanyo nuburyo bwo kubashyiriraho biterwa nibintu byinshi nkumubare wimiyoboro y'ibimenyetso ku kibaho, ubucucike bwibikoresho, ubucucike, ubunini bw'Inama y'Ubutegetsi nibindi. Kuri ibyo bintu, tugomba gutekereza ku buryo bumva. Kubindi bimenyetso byinshi, ubwinshi bwibikoresho, hejuru ya pin ubucucike bwibimenyetso, igishushanyo kinini kigomba kwemezwa uko gishoboka. Kugirango ubone imikorere myiza ya EMI, nibyiza kwemeza ko buri kimenyetso gifite urwego rwayo.