Lungiselela uyilo lwe-HDI Flex PCB kunye noqhagamshelo ukuphucula umgangatho wesiginali kunye nokunciphisa ubude bomkhondo

Yazisa:

Kule post blog, siza kuphonononga ingqwalaselo ebalulekileyo kunye nobuchule ukulandela ukunciphisa umkhondo ubude kwaye ekugqibeleni siphucule HDI flex umgangatho uphawu PCB.

I-High-density interconnect (HDI) iibhodi zesekethe eziguquguqukayo eziprintiweyo (PCBs) lukhetho oluya luthandwa kakhulu kwii-electronics zanamhlanje ngenxa yokuqina kunye nokuguquguquka kwazo. Nangona kunjalo, ukuyila kunye nokuphumeza ukubekwa kwecandelo kunye neendlela zokunxibelelana kwii-PCB eziguquguqukayo ze-HDI kunokuba ngumsebenzi onzima.

Ukubaluleka kokubekwa kwecandelo kunye neendlela zokudibanisa:

Uyilo lwamacandelo kunye neendlela zokudibanisa zinempembelelo enkulu ekusebenzeni ngokubanzi kwee-PCB eziguquguqukayo ze-HDI. Ukubekwa kwecandelo okulungiselelwe ngokufanelekileyo kunye nobuchule bomzila kunokunyusa imfezeko yomqondiso kunye nokunciphisa ukugqwetheka komqondiso. Ngokunciphisa ubude bomgca, sinokunciphisa ukulibaziseka kokudluliselwa kunye nokulahlekelwa kwezibonakaliso, ngaloo ndlela siphucula ukuthembeka kwenkqubo kunye nokusebenza.

Izinto ekufuneka uziqwalasele xa ukhetha uyilo lwecandelo:

1. Uhlalutyo lokuhamba komqondiso:

Ngaphambi kokuqala ukubekwa kwecandelo, kubalulekile ukuqonda ukuhamba komqondiso kunye nokumisela indlela ebalulekileyo. Ukuhlalutya iindlela zomqondiso kusivumela ukuba songeze ukubekwa kwamacandelo achaphazela kakhulu imfezeko yomqondiso.

2. Ukubekwa kwamacandelo anesantya esiphezulu:

Amacandelo anesantya esiphezulu, afana ne-microprocessors kunye ne-memory chips, zifuna ingqalelo ekhethekileyo. Ukubeka la macandelo asondeleleneyo kunciphisa ukulibaziseka kokusasazwa komqondiso kwaye kunciphisa imfuno yokulandelela ixesha elide. Ukongezelela, ukubeka amacandelo e-high-speed kufuphi nokunikezelwa kwamandla kunceda ukunciphisa i-impedance network distribution network (PDN), ukuncedisa ukunyaniseka kwesignali.

3. Ukwahlulahlula amacandelo anxulumeneyo:

Ukwahlula ngokwamaqela amacandelo (afana nedijithali kunye ne-analog components) kwi-layout ikhusela ukuphazamiseka kunye ne-crosstalk. Kukwacetyiswa kwakhona ukwahlula isantya esiphezulu sedijithali kunye neempawu ze-analog ukuphepha ukudibanisa kunye nokuphazamiseka.

4. Ukuqhawula i-capacitor:

I-Decoupling capacitors ibalulekile ekugcineni amandla azinzileyo kwiisekethe ezidibeneyo (ICs). Ukuzibeka ngokusondeleyo kangangoko kunokwenzeka kwizikhonkwane zamandla ze-IC kunciphisa i-inductance kwaye kwandisa ukusebenza kakuhle kokuqhawula umbane.

Izinto ekufuneka uziqwalasele xa ukhetha indlela yonxibelelwano:

1. Iindlela ezimbini ezahlukeneyo:

Izibini ezahlukeneyo ziqhele ukusetyenziselwa ukuhanjiswa kwedatha ngesantya esiphezulu. Ukuhamba ngendlela eyiyo kwamaqela ahlukeneyo kubalulekile ekugcineni imfezeko yomqondiso. Ukugcina umkhondo unxusene kunye nokugcina isithuba esingaguqukiyo phakathi kwezinto ezilandelwayo kuthintela i-skew yesiginali kunye nokunciphisa ukuphazamiseka kwe-electromagnetic (EMI).

2. Ulawulo lokuphazamiseka:

Ukugcina i-impedance elawulwayo ibalulekile kwi-high-speed signal transmission. Ukusebenzisa i-impedance traces elawulwayo kwiimpawu zesantya esiphezulu kunokunciphisa ukubonakaliswa kunye nokuphazamiseka komqondiso. Ukubandakanya i-impedance calculators kunye nezixhobo zokulinganisa kwinkqubo yoyilo kunokuncedisa kakhulu ekufezekiseni ulawulo olululo lwe-impedance.

3. Indlela ethe ngqo:

Ukunciphisa ubude bendlela, kuyacetyiswa ukuba ukhethe iindlela ezithe tye xa kunokwenzeka. Ukunciphisa inani le-vias kunye nokusebenzisa ubude obufutshane bokulandelela kunokuphucula kakhulu umgangatho wesignali ngokunciphisa ilahleko yomqondiso.

4. Kuphephe ukugoba kunye neekona:

Ukugoba kunye neekona kwimikhondo zazisa i-impedance eyongezelelweyo kunye nokuyeka umqondiso, okukhokelela ekunciphiseni umqondiso. Ukuhamba kwimigca ethe tye okanye iigophe zerediyasi ezinkulu kunceda ukunciphisa ukubonakalisa umqondiso kunye nokugcina imfezeko yomqondiso.

Iziphumo kunye neenzuzo:

Ngokulandela le ngqwalasela kunye nobuchule obungasentla, abaqulunqi banokufezekisa ukubekwa kwecandelo kunye neendlela zoqhagamshelwano kwii-PCB eziguquguqukayo ze-HDI. Ungafumana ezi zibonelelo zilandelayo:

1.Phucula umgangatho wophawu:

Ukunciphisa ubude bomgca kunciphisa ukulibaziseka kokudluliselwa, ukulahleka komqondiso, kunye nokuphazamiseka komqondiso. Oku kwandisa umgangatho womqondiso kunye nokuphucula ukusebenza kwenkqubo.

2. Nciphisa intetho engxamisekileyo kunye nokuphazamiseka:

Ukwahlula ngokwamaqela okufanelekileyo kunye nokwahlula kunokunciphisa i-crosstalk kunye nokuphazamiseka, ngaloo ndlela kuphuculwe imfezeko yomqondiso kunye nokunciphisa ingxolo yenkqubo.

3. Ukusebenza okuphuculweyo kwe-EMI/EMC:

Ubuchwephesha be-cabling obufanelekileyo kunye nolawulo lwe-impedance lunciphisa ukuphazamiseka kwe-electromagnetic kunye nokuphucula ukuhambelana kwe-electromagnetic kwenkqubo.

4. Ukuhanjiswa kwamandla okusebenzayo:

Ukubekwa kwesicwangciso-qhinga samacandelo esantya esiphezulu kunye ne-capacitors yokuqhawula iphucula ukusebenza kakuhle kokuhanjiswa kwamandla, ukuqinisa ngakumbi ukuthembeka komqondiso.

Ukuququmbela:

Ukuphucula umgangatho wesignali kunye nokunciphisa ubude bomkhondo kwi-HDI flex PCBs, abaqulunqi kufuneka baqwalasele ngononophelo icandelo lobeko kunye neendlela zokudibanisa.Ukuhlalutya ukuhamba komqondiso, ukubeka ngokufanelekileyo amacandelo anesantya esiphezulu, ukusebenzisa i-decoupling capacitors, kunye nokuphumeza iindlela eziphuculweyo zomzila kudlala indima ebalulekileyo ekufezekiseni imfezeko yomqondiso ofanelekileyo. Ngokulandela ezi zikhokelo, abavelisi bezinto zombane banokuqinisekisa ukuphuhliswa kwe-PCBs eziguquguqukayo ze-HDI eziphezulu kunye nezithembekileyo.