Inani lamanqanaba e-PCB lixhomekeke kubunzima be ibhodi yesekethe. Ukusuka kwimbono yenkqubo ye-PCB, i-PCB eyahlukeneyo yenziwa nge-“iphaneli kabini ye-PCB” ngenkqubo yokuxinana kunye nokucofa. Nangona kunjalo, inani lezendlalelo, ukulandelelana ngokulandelelana kunye nokukhethwa kwebhodi ye-PCB eyahlukeneyo kumiselwe ngumyili we-PCB, ebizwa ngokuba yi “PCB stacking design”.

Izinto ekufuneka ziqwalaselwe kuyilo lwe-PCB Cascade

Inani lamanqanaba kunye nokubekwa koyilo lwePCB kuxhomekeke kwezi zinto zilandelayo:

1. Izixhobo zekhompyutha: Inani leengqimba ze-PCB lihambelana ngqo neendleko zokugqibela zehardware. Amanqanaba akhoyo ngaphezulu, iindleko zehardware eziphakamileyo ziya kuba.

2. Ukufakelwa kwamacandelo ezinto ezixineneyo: izinto ezixineneyo ezimelwe zizixhobo zokupakisha ze-BGA, iileya zokubiyela ezo zinto zisisiseko sombane webhodi yePCB;

3. Ukulawulwa komgangatho wophawu: kuyilo lwe-PCB enesantya esiphezulu soxinaniso, ukuba kugxilwe kumgangatho wesiginali, kuyafuneka ukunciphisa ukufakwa kweengcingo ezikufutshane ukunciphisa i-crosstalk phakathi kweempawu. Ngeli xesha, umlinganiso wee-wiring layer kunye neereferensi zokuhambisa (umaleko womhlaba okanye umaleko waMandla) yeyona nto ilungileyo 1: 1, eya kuthi ibangele ukonyuka kwemaleko yoyilo lwePCB. Kwelinye icala, ukuba ulawulo lomgangatho womqondiso alunyanzelekanga, iskim esikufutshane sokubekwa kweengcingo singasetyenziselwa ukunciphisa inani leendlela zePCB;

4. Inkcazo yomqondiso wolungelelwaniso: Inkcazo yomqondiso wolungelelwaniso iya kumisela ukuba ngaba iintambo ze-PCB “azigudisi” na. Inkcazo yemiqondiso engalunganga iya kukhokelela kwintambo ye-PCB engalunganga kunye nokonyuka komaleko weentambo.

5. Isiseko somsebenzi womenzi wePCB: iskimu sokuyila ingqokelela (indlela yokufumba, ingqokelela yokuqina, njl. imodeli, njl.

Uyilo lwePCB lokufuna izinto lubeka phambili kunye nokulinganisa zonke ezi mpembelelo zingasentla.

Imigaqo ngokubanzi yoyilo lwe-PCB Cascade

1. Ubume kunye nophawu lomqondiso kufuneka ludityaniswe ngokuqinileyo, oko kuthetha ukuba umgama phakathi kokubekwa kunye nongqameko wamandla kufuneka ube mncinci ngangokunokwenzeka, kwaye ubukhulu bephakathi kufuneka bube buncinci kangangoko, ukwenzela ukwandisa Isikhundla phakathi kwamandla ombane kunye nokwakheka (ukuba awuqondi apha, unokucinga ngobungakanani beplate, ubungakanani be-capacitance bulinganayo ngokulinganayo kwisithuba).

2, imiqolo emibini yemiqondiso kude kube ngokukuko ngokungangqalanga ngqo kufutshane, kulula ukubonakalisa i-crosstalk, ichaphazela ukusebenza kwesekethe.

I-3, yebhodi yesekethe eyahlukeneyo, enjengebhodi yomaleko emi-4, ibhodi yomaleko eyi-6, iimfuno ngokubanzi zomaleko wesiginali kangangoko kunokwenzeka kunye nolwaleko lwangaphakathi lombane (umaleko okanye umaleko wamandla) okufuphi, ukuze usebenzise enkulu Indawo yomaleko wangaphakathi wombane wokutyabeka ubhedu ukuze udlale indima ekukhuseleni umaleko wesiginali, ukuze kuthintelwe ngokufanelekileyo indawo yokuhamba phakathi komaleko wesiginali.

4. Uluhlu lwesiginali yesantya esiphezulu, ubukhulu becala ibekwe phakathi kweendlela ezimbini zombane zangaphakathi. Injongo yoku kukubonelela ngendlela efanelekileyo yokukhusela imiqondiso yesantya esiphezulu kwelinye icala, kunye nokunciphisa umda wesantya esiphezulu phakathi kwamanqanaba amabini ombane wangaphakathi kwelinye icala, ukunciphisa ukungaphazamiseki kolunye uphawu lomqondiso.

5. Cinga ulingano macala lolwakhiwo lwecascade.

6.Ukubeka isiseko sombane maleko wombane wangaphakathi kunokunciphisa ukunciphisa ukunganyanzeliswa komhlaba.

Icetyisiwe ulwakhiwo lwecascading

I-1, ilaphu le-wiring eliphezulu le-wiring ephezulu, ukuthintela ukusetyenziswa kwe-wiring ephezulu ukuya emngxunyeni kunye nakwindlela yokungenisa. Imigca yedatha phakathi kwesodwa sodwa kunye nokuhambisa kunye nokufumana isekethe kudityaniswe ngokuthe ngqo ziintambo ezihamba rhoqo.

2. Inqwelomoya yomhlaba ibekwe ngaphantsi komgca wesiginali esiphakamileyo sokulawula ukunganyanzeleki komgca wokudityaniswa konikezelo kunye nokubonelela ngendlela ephantsi kakhulu ye-inductance yokubuya yangoku ukuhamba.

3. Beka umaleko wombane phantsi komaleko womhlaba. Amacwecwe amabini ekubhekiswa kuwo enza i-hf eyedlula kwi-capacitor emalunga ne-100pF / INCH2.

4. Iimpawu zokulawula isantya esiphantsi zilungiswe kwintambo engezantsi. Le migca inomda omkhulu wokumelana nokungabikho kwe-impedance okubangelwa yimingxunya, ngaloo ndlela ivumela ubhetyebhetye obukhulu.

Ngaba uyaluqonda uyilo lwe-PCB Cascade

Example-maleko ezine elaminethiweyo ipleyiti umzekelo

Ukuba amandla ongezelelweyo okuhambisa umbane (Vcc) okanye umaleko womqondiso uyafuneka, isongezo sokuhambisa umbane wesibini / umaleko kufuneka ugcinwe ngokulinganayo. Ngale ndlela, ulwakhiwo laminated luzinzile kwaye iibhodi azizukugoba. Amacwecwe ombane anee-voltage ezahlukeneyo kufuneka zikufutshane nokwakheka kokunyusa isantya esiphakamileyo sokudlula kwamandla kunye nokucinezela ingxolo.