Ubunyangamugayo bwamashanyarazi (PI)

Imbaraga zifatika, zivugwa nka Pi, ni ukwemeza niba voltage hamwe nububasha bwimbaraga hamwe nukubise hamwe byujuje ibisabwa. Ubunyangamugayo bukomeje kuba umwe mu bibazo bikomeye bya PCB igishushanyo mbonera cya PCB.

Urwego rwubunyangamugayo rurimo urwego rwa chip, urwego rwa chip, urwego rwumuzunguruko nubuyobozi bwa sisitemu. Muri bo, ubunyangamugayo ku bubasha ku rwego rw'umuzunguruko bugomba kubahiriza ibisabwa bitatu bikurikira:

1. Kora voltage ihindagurika kuri chip pin ntoya kuruta ibisobanuro (urugero, ikosa hagati ya voltage na 1V ni munsi ya + / -50MV);

2. Kugenzura ubutaka bwongeye gusubirwamo (bizwi kandi nka Synchrorous Guhindura urusaku SSN na Synchrorous Guhindura Ibisohoka Sso);

3, kugabanya interference ya elecromagnetike (eMI) no gukomeza guhuza amagorofa (EMC): Umuyoboro wo gukwirakwiza imbaraga (PDN) nurwego runini kuri onten yohereza no kwakira urusaku.

Ikibazo cyubunyangamugayo

Ikibazo cyo gutanga imbaraga giterwa ahanini nigishushanyo kidafite ishingiro cyo gutunganya imbaraga, ingaruka zikomeye zumuzunguruko, indege mbi yindege nyinshi zo gutanga imbaraga / indege idahwitse hamwe nuburinganire. Binyuze mu busugire, ibyo bibazo byabonetse, hanyuma ibibazo byubunyangamugayo byakemuwe nuburyo bukurikira:

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Isesengura ry'amashanyarazi

Mu isesengura ry'ubunyangamugayo, ubwoko nyamukuru bwo kwigana harimo DC Voltage isesengura, gusesengura gusesengura no gusesengura urusaku. DC Voltage isesengura rifite isesengura ryinshi ryimirwano rigoye kandi ryindege kandi rishobora gukoreshwa kugirango umenye umubare wa voltage uzatakaza kubera kurwanya umuringa.

Yerekana ubucucike bwubupfura nubushyuhe bwubushyuhe bwa "Ahantu hashyushye" muri PI / THE-THE-THE-CHE-CHE-THE.

Isesengura rya decoupling mubisanzwe ritwara impinduka mu gaciro, ubwoko, numubare wubushobozi bukoreshwa muri PDN. Kubwibyo, birakenewe gushiramo amacarangaganya no kurwanya ubushobozi bwakazi.

Ubwoko bw'isesengura ryurusaku rishobora gutandukana. Barashobora gushiramo urusaku ruva amakaramu ya ico akwirakwiza mu kigo cyumuzunguruko kandi gishobora kugenzurwa no kwitabaza. Binyuze mu isesengura ryurugomo, birashoboka gukora iperereza kuburyo urusaku ruhujwe numwobo umwe ujya mubindi, kandi birashoboka gusesengura urusaku rwa synictch.