Igishushanyo cya laminated cyubahiriza cyane cyane amategeko abiri:

1. Buri cyuma kigomba kuba gifite icyerekezo cyegeranye (imbaraga cyangwa ubutaka);
2. Imbaraga nyamukuru zegeranye hamwe nubutaka bugomba kubikwa intera ntoya kugirango itange ubushobozi bunini bwo guhuza;

Ibikurikira byerekana urutonde kuva kumurongo wibice bibiri kugeza ku munani wibibaho urugero kubisobanuro:

1. Ikibaho kimwe cya PCB hamwe na PCB yibice bibiri

Ku mbaho ​​ebyiri, kubera umubare muto wibice, ntakibazo kibaho.Kugenzura imirasire ya EMI ifatwa cyane cyane kuva insinga n'imiterere;

Guhuza amashanyarazi ya magnetiki yububiko bumwe hamwe nibibaho bibiri byarushijeho kugaragara.Impamvu nyamukuru yibi bintu ni uko ibimenyetso byerekana ahantu hanini cyane, bidatanga gusa imirasire ikomeye ya electromagnetique, ahubwo binatuma uruziga rwumva ibintu bitavanze.Kunoza imiyoboro ya electromagnetic yumuzunguruko, inzira yoroshye nukugabanya agace kazengurutse ibimenyetso byingenzi.

Ikimenyetso cyingenzi: Urebye kubijyanye na electromagnetic ihuza, ibimenyetso byingenzi bivuga cyane cyane ibimenyetso bitanga imirasire ikomeye nibimenyetso byumva isi.Ibimenyetso bishobora kubyara imirasire ikomeye mubisanzwe ni ibimenyetso byigihe, nkibimenyetso byo hasi byisaha cyangwa aderesi.Ibimenyetso byumva kwivanga nibimenyetso bisa nurwego rwo hasi.

Ikibaho kimwe kandi cyibiri gikoreshwa muburyo busanzwe bwo kugereranya munsi ya 10KHz:

1) Imbaraga zumurongo kumurongo umwe ziyobowe muburyo bwuzuye, kandi uburebure bwimirongo buragabanuka;

2) Iyo ukoresha ingufu ninsinga zubutaka, bigomba kuba byegeranye;shyira insinga y'ubutaka iruhande rw'urufunguzo rw'ibimenyetso, kandi iyi nsinga y'ubutaka igomba kuba yegeranye hashoboka n'insinga z'ikimenyetso.Muri ubu buryo, hashyizweho agace gato ka loop kandi ibyiyumvo byimiterere itandukanye yimirasire yo hanze bigabanuka.Iyo umugozi wubutaka wongeyeho kuruhande rwicyuma cyerekana ibimenyetso, hashyirwaho uruziga rufite agace gato, kandi ibimenyetso byerekana ibimenyetso rwose bizafata uyu muzinga aho kuba izindi nsinga zubutaka.

3) Niba ari ikibaho cyibice bibiri byumuzunguruko, urashobora gushyira umugozi wubutaka kumurongo wumurongo wikimenyetso kurundi ruhande rwumuzunguruko, ako kanya munsi yumurongo wikimenyetso, kandi umurongo wambere ugomba kuba mugari bishoboka.Agace ka loop kakozwe murubu buryo kangana nubunini bwikibaho cyizunguruka cyikubye uburebure bwumurongo wibimenyetso.

Ibice bibiri na bine bya laminates

1. SIG － GND (PWR) －PWR (GND) －SIG;
2. GND － SIG (PWR) －SIG (PWR) －GND;

Kubishushanyo bibiri byavuzwe haruguru, ikibazo gishobora kuba kubisanzwe bwa 1,6mm (62mil).Umwanya utandukanijwe uzaba munini cyane, ntabwo ari byiza gusa kugenzura inzitizi, guhuza imikoranire no gukingira;byumwihariko, intera nini hagati yindege zubutaka zigabanya ubushobozi bwibibaho kandi ntabwo bifasha gushungura urusaku.

Kuri gahunda yambere, mubisanzwe ikoreshwa mubihe hari utubuto twinshi kurubaho.Ubu bwoko bwa gahunda irashobora kubona imikorere myiza ya SI, ntabwo aribyiza cyane kubikorwa bya EMI, cyane cyane binyuze mumashanyarazi nibindi bisobanuro byo kugenzura.Icyitonderwa cyingenzi: Igice cyubutaka gishyirwa kumurongo uhuza urwego rwikimenyetso hamwe nikimenyetso cyinshi, gifasha gukurura no guhagarika imirasire;ongera ubuso bwinama kugirango ugaragaze amategeko ya 20H.

Kubijyanye nigisubizo cya kabiri, mubisanzwe bikoreshwa mugihe ubwinshi bwa chip kurubaho buri hasi bihagije kandi hari umwanya uhagije ukikije chip (shyira ingufu zumuringa zisabwa).Muri iyi gahunda, igice cyo hanze cya PCB nubutaka, naho hagati ibice bibiri ni ibimenyetso / imbaraga.Amashanyarazi kumurongo wibimenyetso ayobowe numurongo mugari, ushobora gutuma inzira ibangamira amashanyarazi atangwa, kandi inzitizi yinzira ya microstrip yinzira nayo iri hasi, kandi imirasire yimbere yimbere nayo irashobora gukingirwa na urwego rwo hanze.Urebye kugenzura EMI, iyi niyo nziza ya 4-layer PCB iboneka.

Icyitonderwa cyibanze: Intera iri hagati yibice bibiri byerekana ibimenyetso hamwe no kuvanga ingufu bigomba kwagurwa, kandi icyerekezo cyerekezo kigomba kuba gihagaritse kugirango wirinde kunyura;agace k'ubuyobozi kagomba kugenzurwa neza kugirango hagaragazwe amategeko ya 20H;niba ushaka kugenzura inzitizi, igisubizo cyavuzwe haruguru kigomba kwitonda cyane kugirango ugere ku nsinga Itunganijwe munsi yizinga ryumuringa kugirango itange amashanyarazi.Byongeye kandi, umuringa ku mashanyarazi cyangwa urwego rwubutaka ugomba guhuzwa uko bishoboka kwose kugirango DC ihuze imirongo mike.

Ibice bitatu, bitandatu

Kubishushanyo bifite ubwinshi bwa chip nubunini bwisaha ndende, hagomba gusuzumwa igishushanyo mbonera cyibice 6, kandi uburyo bwo gutondeka burasabwa:

1. SIG － GND － SIG － PWR － GND － SIG;

Kuri ubu bwoko bwa gahunda, ubu bwoko bwa laminated gahunda burashobora kubona neza ubunyangamugayo bwibimenyetso, urwego rwibimenyetso rwegeranye nubutaka bwubutaka, urwego rwamashanyarazi hamwe nubutaka bwubutaka burahujwe, inzitizi ya buri cyuma irashobora kugenzurwa neza, na bibiri Urwego rushobora gukurura imirongo ya magneti neza.Kandi iyo amashanyarazi hamwe nubutaka bwuzuye, birashobora gutanga inzira nziza yo kugaruka kuri buri kimenyetso.

2. GND － SIG － GND － PWR － SIG －GND;

Kuri ubu bwoko bwa gahunda, ubu bwoko bwa gahunda burakwiriye gusa mubihe ibintu byubwinshi bwibikoresho bitari hejuru cyane, ubu bwoko bwa lamination bufite ibyiza byose byo kumurika hejuru, kandi indege yubutaka yo hejuru no hepfo irasa byuzuye, bishobora gukoreshwa nkurwego rwiza rwo gukingira Gukoresha.Twabibutsa ko ingufu zamashanyarazi zigomba kuba hafi yurwego rutari igice kinini cyibice bigize ibice, kuko indege yurwego rwo hasi izaba yuzuye.Kubwibyo, imikorere ya EMI iruta igisubizo cyambere.

Incamake: Kuburyo butandatu bwibishushanyo mbonera, intera iri hagati yumurongo wamashanyarazi nubutaka igomba kugabanuka kugirango ubone imbaraga nziza hamwe nubutaka.Nubwo, nubwo umubyimba wibibaho ari 62mil kandi intera igabanijwe, ntabwo byoroshye kugenzura intera iri hagati yumuriro wamashanyarazi nubutaka bwo kuba buto.Ugereranije gahunda yambere hamwe na gahunda ya kabiri, ikiguzi cya gahunda ya kabiri kiziyongera cyane.Kubwibyo, mubisanzwe duhitamo inzira yambere mugihe dushyira hamwe.Mugushushanya, kurikiza amategeko ya 20H hamwe nigishushanyo mbonera cyindorerwamo.

Inzira enye n'umunani

1. Ubu ntabwo aribwo buryo bwiza bwo gutondekanya bitewe no gufata nabi amashanyarazi no kutagira amashanyarazi manini.Imiterere yacyo niyi ikurikira:
1.Icyapa cya 1 kigizwe hejuru, microstrip wiring layer
2. Ikimenyetso cya 2 microstrip wiring layer, icyerekezo cyiza (X icyerekezo)
3.Impamvu
4. Ikimenyetso cya 3 umurongo uyobora inzira, icyerekezo cyiza (Y icyerekezo)
5.Ikimenyetso cya 4 umurongo uyobora inzira
6.Imbaraga
7. Ikimenyetso cya 5 imbere ya microstrip wiring layer
8.Signal 6 microstrip trace layer

2. Nuburyo butandukanye bwa gatatu bwo gutondeka.Bitewe no kongeramo ibyerekezo, bifite imikorere myiza ya EMI, kandi impedance iranga buri kimenyetso gishobora kugenzurwa neza
1.Icyapa cya 1 kigizwe hejuru, microstrip wiring layer, icyuma cyiza
2. Ibice byubutaka, ubushobozi bwiza bwo kwinjiza amashanyarazi
3. Ikimenyetso cya 2 umurongo uhuza inzira, inzira nziza
4. Imbaraga zingufu, zikora amashanyarazi meza cyane hamwe nubutaka buri munsi ya 5. Ubutaka
6.Icyapa cya 3 umurongo uyobora inzira, inzira nziza yo kuyobora
7. Inzego z'amashanyarazi, hamwe nimbaraga nini yo gutanga amashanyarazi
8.Signal 4 microstrip wiring layer, icyuma cyiza

3. Uburyo bwiza bwo gutondekanya, bitewe no gukoresha indege nyinshi zubutaka, bufite ubushobozi bwiza bwo kwinjiza geomagnetic.
1.Icyapa cya 1 kigizwe hejuru, microstrip wiring layer, icyuma cyiza
2. Imiterere y'ubutaka, ubushobozi bwiza bwo kwinjiza amashanyarazi
3. Ikimenyetso cya 2 umurongo uhuza inzira, inzira nziza
4.Imbaraga zingufu, zikora amashanyarazi meza cyane hamwe nubutaka buri munsi ya 5.Ubutaka
6.Icyapa cya 3 umurongo uyobora inzira, inzira nziza yo kuyobora
7. Ibice byubutaka, ubushobozi bwiza bwo kwinjiza amashanyarazi
8.Signal 4 microstrip wiring layer, icyuma cyiza

Nigute ushobora guhitamo ibice byinshi byimbaho ​​bikoreshwa mugushushanya nuburyo bwo kubitondekanya biterwa nibintu byinshi nkumubare wimiyoboro yerekana ibimenyetso kurubaho, ubwinshi bwibikoresho, ubucucike bwa PIN, ubwinshi bwibimenyetso, ubunini bwibibaho nibindi.Tugomba gusuzuma ibi bintu muburyo bwuzuye.Kumurongo wibimenyetso byinshi, hejuru yubucucike bwibikoresho, niko hejuru ya PIN nubunini bwikimenyetso cyinshi, igishushanyo mbonera cyibice byinshi bigomba kwemerwa bishoboka.Kugirango ubone imikorere myiza ya EMI, nibyiza kwemeza ko buri kimenyetso cyerekana ibimenyetso byacyo.