Ukukhiqizwa kwe-PCB ye-Motherboard ye-PC encane yamakhompyutha aqinile

I-PCB yebhodi lomama elincane le-PC icindezela ama-interface ekilasi ledeskithophu ebhodini lapho ukucaciswa komshini, indlela yokushisa kanye nomzila wesignali kungenakuhlukaniswa khona. Umklamo ungadinga i-DDR5 noma i-LPDDR, i-M.2 NVMe, okukhiphayo kwezibonisi eziningi, uxhumano lwe-USB-C/USB4-class, i-Wi-Fi kanye nokuguqulwa kwamandla amakhulu ku-chassis enesikhala esincane samamilimitha ambalwa nje esizungeze i-heatsink.

I-Highleap Electronics ikhiqiza ama-PCB amancane kanye nama-PCBA ahlanganiswe ngamakhasimende anokwakhiwa kwe-multilayer/HDI, i-fine-pitch assembly, i-controlled impedance, ukuhlolwa, ukuhlela kanye nokuhlolwa kokusebenza. Ukubuyekezwa kokukhiqiza kugxile ekutheni ibhodi ekhishwe ingakhiwa ngokuphindaphindiwe yini ngaphakathi kwe-mechanical and thermal envelope yangempela.

Qala kusukela ku-Enclosure kanye ne-I/O Density, Hhayi i-Shrunk Desktop Schematic

I-PCB encane yebhodi lomama le-PC iyinkinga yokupakishwa kuqala. Ibhodi kufanele ifake iprosesa, imemori, isitoreji, ukuguqulwa kwamandla, i-I/O yesivinini esikhulu, imodyuli engenantambo kanye namaphoyinti okufaka ukushisa ku-chassis engaba ncane kunekhadi lehluzo ledeskithophu. Uma indawo ebiyelwe, izikhundla zokuxhuma kanye nesixhumi esibonakalayo se-heatsink kungaqiniswanga ndawonye, ​​​​ukuphindaphinda kwesakhiwo se-PCB kuyanda ngokushesha.

Ngokungafani nebhodi lomama le-ATX, ibhodi elincane le-PC alivamile ukuba nendawo enkulu yokuqondisa ezungeze amachweba nezigaba zamandla. Isixhumi ngasinye sidla ubude bomphetho, yonke isokhethi ye-M.2 incintisana ne-heatsink, futhi yonke ingxenye eqondile ithinta ukuphakama kwe-chassis. Ngakho-ke iphakheji ye-RFQ kufanele ifake imikhawulo ye-3D mechanical, hhayi nje uhlaka lwebhodi le-2D.

Beka iprosesa, imemori kanye nesitoreji eduze kwesixazululo sokushisa

Iprosesa ivame ukuba umthombo wokushisa oyinhloko kanye nehabhu yokuqondisa eyinhloko. Indawo yayo kufanele ikhethwe nge-heatsink, fan noma i-heat spreader esivele ichaziwe. Ukususa iprosesa sekwephuzile ukuze kuxazululwe ukuphazamiseka komshini kungenza i-memory routing ingasebenzi, ubude be-M.2, ukubekwa kwe-USB-C kanye nokugcinwa kwe-antenna.

• Iprosesa ye-BGA: I-Fanout ingadinga ama-microvia e-HDI noma i-via-in-pad kuye ngokuthi iphimbo lephakeji kanye nobuningi bebhodi.
• Imemori: Umzila we-LPDDR noma we-DDR5 SO-DIMM kufanele ube nesu eliqinile le-reference-plane kanye nendawo yokulungisa engokoqobo.
• I-NVMe: Amasokhethi e-M.2 adinga kokubili ubuqotho besiteshi se-PCIe kanye nokupholisa kwe-SSD yendawo; i-thermal pad ayikwazi ukuthatha isikhala esifanayo nezingxenye ezinde.
• Imojuli ye-Wi-Fi: Ukubekwa kwe-M.2 E-key kufanele kubhekele ukuhanjiswa kwekhebula le-antenna kanye nokuvikelwa kwe-chassis yensimbi.
• Izingxenye ze-RTC/CMOS/zesevisi: Izinto ezincane zesevisi zisadinga ukufinyelela ngemva kokufakwa kwe-heatsink kanye nefeni.

Cindezela i-USB-C, i-Display kanye ne-Network I/O Ngaphandle Kokudala Indawo Eshisayo Yesignali Nobuqotho

Ama-PC amancane avame ukukhangisa ngemiphumela eminingana yokubonisa kanye nama-port e-USB asheshayo avela kuphaneli encane kakhulu yangemuva. Ngogesi, lokho kugxila kumasekethe e-USB, i-DisplayPort/HDMI, i-Ethernet kanye nokulethwa kwamandla endaweni eyodwa yomphetho. Ukuhlelwa kudinga ukuhlukaniswa okwanele kwezindlela zokubuya ze-ESD, umzila wokuhlukanisa kanye nokugcinwa kwemishini yokuxhuma.

• I-USB-C / i-USB4: Isilawuli se-PD, iswishi yokuqondisa, i-retimer/redriver kanye nokuvikelwa kufanele kubekwe njengesiteshi, hhayi njengezingxenye ezingahlobene.
• Bonisa imiphumela: Umzila we-HDMI/DisplayPort kufanele ugweme ukuphambuka okude okudalwe ezinye izimbobo zephaneli yangemuva.
• I-Ethernet: Umzila we-PHY-to-magnetic kanye nesu lomhlabathi we-chassis kufanele kuhlanganiswe nokufakwayo kwe-USB kanye ne-DC.
• Ngaphambili I/O: I-USB/umsindo wangaphambili ungasebenzisa ukuxhumana kwebhodi nebhodi noma ikhebula; i-harness iba yingxenye yokuqinisekiswa kwesivinini esikhulu.
• Ukuvikelwa kwe-ESD: Indawo yokuvikela kufanele ibe seduze nesixhumi esinendlela yokubuyisa i-inductance ephansi.

Imiklamo yereferensi ye-TI yezinhlelo ze-USB-C/PD ezihlanganisiwe kanye ne-redriver ibonisa ukuthi kungani le misebenzi kufanele ihlelwe ndawonye: izinga ledatha, ukushintsha kwe-orientation kanye nokulethwa kwamandla konke kunendawo efanayo yokuxhuma.

Ukwakhiwa Kwamandla Kumele Kusinde I-CPU Boost, I-SSD Load kanye Nemicimbi Yamandla E-USB

Ibhodi elincane lingabhekana nezinguquko ezinkulu zamanje ezisheshayo ngenkathi linendawo encane yethusi yokusabalalisa ukushisa. Umklamo wamandla kufanele ufake i-adaptha yangaphandle noma umthombo we-USB-C, ukuvikelwa kokufaka, izigaba eziyinhloko ze-buck, ama-CPU rails, ama-memory/storage rails kanye nanoma yimaphi amandla e-USB angezansi.

Yenza i-PCB kanye ne-Heatsink Kubambisane Ngobuchwepheshe

Ukuthembeka kwe-PC encane kuvame ukuncika ekuxhumaneni phakathi kwe-PCB kanye ne-assembling yokupholisa. Izikulufu ze-heatsink, imithwalo yentwasahlobo, ama-thermal pad kanye nama-chassis standoffs kungagoba ibhodi uma umthwalo ungalingani. Umdwebo we-PCB kufanele ubonise ukuthi i-keep-outs kanye ne-mounting tolerances zixhunywe kwisisombululo sokupholisa.

• Izingxenye zangemuva: Hlola ukuvuleka kweshasi yensimbi namapuleti okushisa ngaphansi kokubekezela.
• Izimbobo ze-Heatsink: Gcina ithusi kanye nomzila obucayi kude nehadiwe yezikulufo ngokwedizayini yemishini.
• Ukujiya kweBhodi: Ukujiya nokuba yisicaba kuthinta ukuhambisana kwesixhumi kanye nokucindezelwa kwephedi yokushisa.
• Izihloko zabalandeli: Indawo yokuhlanganisa i-harness ngaphandle kokuhambisa ikhebula ezingxenyeni ezishisayo noma ezihambayo.
• Izinzwa ezishisayo: Beka izikrini zokushisa zebhodi lapho zimele khona indawo yokulawula ehlosiwe, hhayi nje lapho kulula khona ukuqondisa.

Sebenzisa i-HDI Kuphela Lapho Ubuningi Buyivumela

Amabhodi ama-Mini PC avame ukuzuza ekukhiqizweni kwe-HDI PCB , kodwa ukwengeza ama-microvia yonke indawo kungandisa izindleko kanye nobunzima be-lamination ngaphandle kokuthuthukisa isivuno. Indlela engcono ukuhlonza izindawo zokuxhumanisa amaphakheji kanye nezindawo zokuxhumanisa ezinobuningi obukhulu kuqala.

• Iphrosesa/i-SoC fanout: Ama-Via-in-pad kanye nama-microvia e-laser angase afaneleke ngenxa yokuphuma kwe-BGA okune-pitch encane.
• Indawo yememori: I-HDI ingadala izinkomba ezihlanzekile futhi inciphise ngama-stubs lapho ubuningi buphezulu.
• I/O yangemuva: Ama-via ajwayelekile angase afaneleke uma engaphazamisi isiteshi sesivinini esikhulu.
• Ibhalansi yezindleko/inzuzo: Nciphisa ukujula kwe-microvia ehlanganisiwe kanye nemijikelezo ye-lamination ehambisana nomklamo.

Ukuqoqwa kwe-stack kufanele kuvunyelwane ngaphambi kokuhambisa. I-Highleap ingabuyekeza umugqa/isikhala, izakhiwo ze-microvia, ukugcwaliswa kwe-via-in-pad, impedance kanye nezinketho zezinto ezibonakalayo ngokumelene nomklamo okhishwe.

Ukuhlela Umhlangano Kufanele Kuvikele Izixhumi Eziqinile kanye Nezixhumi Ezishisayo

Amabhodi amancane e-PC ahlanganisa amaprosesa e-BGA, imemori, izixhumi ze-M.2, izitsha zohlobo lwe-C kanye nama-passive aphezulu. Ukuhlanganiswa kumele kulondoloze kokubili ikhwalithi ye-solder kanye ne-geometry yesixhumi.

• Namathisela/ukugeleza kabusha: Iphrofayili ye-BGA enkulu kakhulu ngenkathi igwema ukucindezeleka okukhulu kokushisa kuma-Type-C kanye nezixhumi zepulasitiki.
• I-X-ray: Hlola amalunga e-BGA/LGA/QFN afihliwe ngokusekelwe ohlelweni lwengozi kanye nekhwalithi.
• Izixhumi ze-M.2/unqenqema lwebhodi: Hlola ukulingana kwe-coplanarity kanye ne-solder fillet ngaphambi kokuhlanganiswa kwe-enclosure.
• Ukuhlela i-Firmware: I-firmware yokulawula ye-BIOS/EC/PD ingadinga izinyathelo zokuhlela ezihlukene ezilawulwayo.
• Ama-thermal pad: Gcina ukufakwa kwegrisi/iphedi kude ne-PCB assembly scope ngaphandle kokuthi umhambi uchaze ngokucacile izinto kanye nokucindezelwa.

Ukuhlolwa Kokukhiqiza Kufanele Kulingise Uhlelo Oluhlanganisiwe Oluhlosiwe

I-Mini PC FCT iwusizo kakhulu uma iqinisekisa izixhumi kanye nezimo zamandla ezibangelwa ukupakishwa okuqinile.

Hlela i-Chassis Ground, i-EMC kanye nama-Antenna angenantambo ndawonye

I-PC encane ivame ukuba ne-enclosure yensimbi eboshwe eduze kwe-PCB. Leyo enclosure ingasiza ekuvikeleni nasekusabalaliseni ukushisa, kodwa futhi ishintsha ukusebenza kahle kwe-antenna, izindlela zokubuya ze-ESD kanye nemisinga yemodi evamile ezintanjeni zangaphandle. Ngakho-ke, umhlabathi we-chassis kufanele uhlelwe ngesu le-enclosure kanye ne-connector-shield.

• Izihlangu ze-RJ45/USB/HDMI: Nquma ukuthi umsinga wesivikelo uxhumeka kuphi ne-chassis nokuthi leyo ndlela igwema kanjani umhlabathi onengqondo obucayi.
• Ama-antenna e-Wi-Fi: Gcina imizila ye-antenna/coax kude nemiphetho ye-heatsink, ama-inductors anomoya ophezulu kanye nezithiyo zensimbi; ukusebenza kokugcina kwe-RF kumele kuqinisekiswe ku-chassis yokukhiqiza.
• I-ESD: Nikeza isivikelo sesixhumi indlela emfushane eya ekubuyeni okuhlosiwe kunokuhambisa amandla okwanda kuwo wonke ubhodi womama.
• Insimbi yefeni/yepayipi lokushisa: Insimbi yemishini eduze kwama-antenna kanye nezixhumi zingashintsha ukuziphatha kwe-RF/EMC; i-DVT kumele isebenzise i-geometry ekhishwe.
• Izintambo zangaphandle: Izihlangu ze-USB-C, i-HDMI kanye ne-Ethernet ziba yingxenye yendlela yesistimu ye-EMC.

Lawula Izinhlobo ze-Mini PC SKU Ngaphandle Kokudala Izingcezu Ezifihliwe

Imindeni yama-PC amancane ivame ukwabelana nge-PCB eyodwa kuma-processor bins, ukucushwa kwememori, isitoreji, izinketho ze-Wi-Fi kanye ne-I/O ehlukene yangemuva. Ukuhlela okuhlukile kufanele kwenziwe ngaphambi kokuhambisa ngoba ukususa abantu ku-retimer, i-mux noma isixhumi kungashiya amagatsha asheshayo alimaza enye i-SKU.

Sebenzisa izixhumanisi ze-zero-ohm, ama-resistors ezinketho kanye nezinyathelo ezingagcwalisiwe kuphela lapho i-topology kagesi yaklanywa khona ngamabomu. Mepha yonke i-hardware ehlukile ku-firmware ye-BIOS/EC/PD, amalebula kanye ne-FCT. I-port yohlobo C esekela ukubonisa ku-SKU eyodwa kodwa idatha kuphela kwenye kufanele ibe nephrofayili yokuhlola ehlukile kunokuthembela kubasebenzisi ukuthi banqume ikhono kusuka kusixhumi.

Dala Uchungechunge Lokukhuphula Ukuze Uhlukanise Ukwehluleka Kwesistimu Ehlanganisiwe

Ama-prototype e-Mini PC angahluleka ngezindlela okunzima ukuzihlukanisa ngoba amandla eprosesa, i-firmware ye-PD, isitoreji, ama-muxes okubonisa kanye nama-thermals kuhlangene kahle. Uchungechunge lokukhulisa oluhlelekile luvimbela ithimba ekushintsheni iziguquguquko eziningana ngesikhathi esisodwa.

• Isigaba 1 — amandla kuphela: Qinisekisa ukuvikelwa kokufaka, ama-standby rails, ukulandelana kwe-VRM kanye nomsinga ongajwayelekile ngaphambi kokufaka isitoreji esibizayo noma izinto ezisetshenziswayo.
• Isigaba 2 — i-core boot: Khulisa i-CPU, i-firmware kanye nememori ngenani elincane labantu abasebenzayo.
• Isigaba 3 — isitoreji kanye ne-PCIe: Engeza amadivayisi e-M.2 bese uqinisekisa ububanzi/ukwenziwa kwesixhumanisi okulindelekile.
• Isigaba 4 — Uhlobo-C/ukubonisa: Qinisekisa ukuxoxisana kwe-PD, ukuqondiswa, imodi ye-alt yokubonisa kanye nezinye izimbobo zesivinini esikhulu ezinezintambo ezivunyiwe.
• Isigaba 5 — umsakazo kanye neshasi: Faka ama-antenna, ifeni/isinki sokushisa kanye nendawo yokukhiqiza; phinda ukuhlolwa kwamandla kagesi kanye nokuqina.
• Isigaba 6 — umthwalo oqhubekayo: Sebenzisa i-CPU/GPU/media kanye ne-NVMe kanye nethrafikhi ye-USB isikhathi eside ngokwanele ukuze uveze ukugoba kokushisa noma ama-marginal rails.

Ku-PVT, guqula ukuhlolwa kokuxilonga okuningi kube yizinyathelo zokulungisa. Ukuhlolwa okuhle kokukhiqiza akudingeki kuphinde kuphinde kuhlolwe ukucindezeleka kobunjiniyela, kodwa kufanele kubambe izindlela ezifanayo zokwehluleka ezatholakala ngesikhathi sokukhulelwa.

Idatha ye-RFQ yokukhiqizwa kwe-PCB ye-Mini PC Motherboard

Nikeza imvilophu ephelele yokupakisha ukuze ikhotheshini ibonise inselele yangempela ye-HDI, ukuhlanganiswa kanye nokuhlolwa.

• I-3D/yemishini: indawo ebiyelwe, uhlaka lwebhodi, ama-data esixhumanisi, izimbobo ze-heatsink, izindawo ezivulekile ngemuva kanye nokuphakama okuphezulu kwezingxenye.
• Ezikagesi: i-stack-up, i-impedance, iprosesa/imemori, i-PCIe/M.2, i-USB-C/USB4, izimfuneko zesibonisi kanye ne-LAN.
• amandla: okokufaka kwe-adaptha/i-PD, amandla aphezulu, amandla okukhipha i-USB kanye nesimo sokuhlola esinogesi ophansi.
• I-BOM: Iprosesa ye-BGA, imemori, izixhumi, izingxenye ze-PD/redriver, amawashi, imodyuli ye-Wi-Fi kanye nezinye izinto ezishintshayo.
• Ukuhlela: I-BIOS, i-EC, i-PD, idatha ye-serial/MAC kanye ne-matrix yokubuyekeza.
• FCT: ukuqalisa, imemori, isitoreji, isibonisi, i-USB, i-LAN kanye nezindawo zokuhlola zamanje/zokushisa.