Ubunyangamugayo (PI)

Imbaraga zuzuye, zitwa PI, ni ukwemeza niba voltage numuyoboro wamashanyarazi hamwe nicyerekezo byujuje ibisabwa. Ubusugire bwimbaraga bukomeje kuba imwe mubibazo bikomeye muburyo bwihuse bwa PCB.

Urwego rwimbaraga zuzuye zirimo urwego rwa chip, urwego rwo gupakira chip, urwego rwumuzunguruko urwego nurwego rwa sisitemu. Muri byo, uburinganire bwimbaraga kurwego rwumuzunguruko bugomba kuba bujuje ibisabwa bitatu bikurikira:

1. Kora voltage ripple kuri chip pin ntoya kurenza ibisobanuro (urugero, ikosa riri hagati ya voltage na 1V ntiri munsi ya + / -50mv);

2. Kugenzura isubiranamo ryubutaka (bizwi kandi nkurusaku rwo guhinduranya urusaku SSN hamwe nogusimburana gusohora SSO);

3, gabanya amashanyarazi (EMI) kandi ukomeze guhuza amashanyarazi (EMC): umuyoboro wo gukwirakwiza amashanyarazi (PDN) numuyoboro munini ku kibaho cyumuzunguruko, bityo rero ni na antenne yoroshye yohereza no kwakira urusaku.

Ikibazo cyubusugire bwimbaraga

Ikibazo cyo gutanga amashanyarazi biterwa ahanini nigishushanyo kidafite ishingiro cyo gukuramo ubushobozi bwa capacitori, ingaruka zikomeye zumuzunguruko, igabana ribi ryamashanyarazi menshi / indege yubutaka, igishushanyo kidafite ishingiro cyo gushiraho hamwe numuyoboro utaringaniye. Binyuze mu kwigana uburinganire bwimbaraga, ibyo bibazo byabonetse, hanyuma ibibazo byubusugire bwimbaraga byakemuwe nuburyo bukurikira:

. kwirinda ibintu byerekana ibimenyetso byingenzi umurongo utandukanijwe;

.

(3) mugice hamwe nubucucike buri hejuru, hindura umwanya wigikoresho kugirango ikigezweho kinyuze munzira yagutse.

Isesengura ryimbaraga

Mu isesengura ryimbaraga zimbaraga, ubwoko bwibanze bwigero burimo dc voltage igabanuka, gusesengura no gusesengura urusaku. Isesengura rya voltage ya Dc ikubiyemo isesengura ryinsinga zoroshye hamwe nindege zindege kuri PCB kandi birashobora gukoreshwa kugirango umenye umubare w'amashanyarazi uzabura bitewe no kurwanya umuringa.

Yerekana ubucucike nubushyuhe bwibishushanyo bya "ahantu hashyushye" muri PI / ubushyuhe bwa co-simulation

Isesengura risesuye risanzwe rituma impinduka zagaciro, ubwoko, numubare wa capacator zikoreshwa muri PDN. Kubwibyo, birakenewe gushiramo parasitike inductance hamwe no kurwanya moderi ya capacitor.

Ubwoko bw'isesengura ry'urusaku burashobora gutandukana. Bashobora gushiramo urusaku ruva mumashanyarazi ya IC ikwirakwiza hafi yumuzunguruko kandi irashobora kugenzurwa no gukuramo ubushobozi. Binyuze mu gusesengura urusaku, birashoboka gukora iperereza ku buryo urusaku ruhujwe kuva mu mwobo ujya mu rundi, kandi birashoboka gusesengura urusaku ruhinduranya.