I-AI Data Center Power PCB Manufacturing Solutions

I-Highleap Electronics isekela ukwenziwa nokuhlanganiswa kwe-PCB kwengqalasizinda yokubala, okuhlanganisa amabhodi e-AI server , amabhodi e-GPU kanye namabhodi okulethwa kwamandla. Chaza izidingo zamandla usebenzisa i-accelerator variant yangempela kanye nokucushwa kwesistimu. Imininingwane yesakhiwo se-H100 se-NVIDIA ifaka uhlu lwe-700 W TDP ye-H100 SXM5 kanye ne-350 W yemodeli ye-H100 PCIe echazwe lapho. Lezi zilinganiso azikho ukusetshenziswa okulinganisiwe komsebenzi ngamunye noma amandla anikezwe isitimela esisodwa esiyinhloko. Bheka imininingwane yesakhiwo se-H100 se-NVIDIA.

I-48V Revolution ku-Data Center Power

Ukushintsha ukusuka ku-12V ukuya ku-48V ukusabalalisa amandla kuguqula ukwakheka kwesikhungo sedatha. Izibalo ezilula ziqhuba lolu shintsho: ukuletha i-1000W ku-12V kudinga i-84A, kuyilapho ku-48V kudinga kuphela i-21A. Lokhu kwehliswa kwamanje okungu-4x kuveza ukulahleka kwe-I²R okungu-16x, okuvumela ukuthuthukiswa kokusebenza kahle okumangazayo nokunciphisa usayizi wekhebula obalulekile.

Kodwa i-48V ayimane nje ikhuphuke i-12V. Amandla kagesi aphezulu adinga izindlela ezihlukene zokuklama:

• Amabanga e-Creepage akhuphuka ukusuka ku-0.4mm kuya ku-1.6mm
• Ukukhethwa kwengxenye kushintshela ezingxenyeni ezilinganiselwe ngo-100V
• Izithiyo zokuzihlukanisa ziba isibopho ukuze kuthotshelwe ukuphepha
• Ukucindezela okudlulayo kufanele kuvikele ezenzakalweni zokushintshashintsha okushisayo

Izinzuzo ziqinisekisa ubunzima. Ubuningi bamandla erekhi buthuthuka ngamaphesenti afinyelela ku-40, izidingo zokupholisa zehla ngo-30%, futhi izindleko eziphelele zobunikazi ziyehla naphezu kwezindleko eziphezulu zezingxenye. Ubuchwepheshe bethu be-PCB obunamandla aphezulu buvumela lezi zakhiwo zesizukulwane esilandelayo zamabhodi okulethwa kwamandla e-AI kanye namapulatifomu eseva ye-AI.

Imiklamo eminingi yesikhungo sedatha isebenzisa ukuguqulwa kwezigaba ezimbili: 48V kuya ku-12V iziguquli zamabhasi eziphakathi nendawo (IBC), zilandelwa yi-12V kuya ku-0.8–1.2V amamojula okulawula amandla kagesi (VRM). Le topology ibhalansisa ukusebenza kahle, izindleko, nokwethembeka kuyilapho igcina ukuhambisana nengqalasizinda ekhona futhi iqinisekisa ukusebenza okuzinzile kwemithwalo yemisebenzi emikhulu ye-AI.

I-Multi-Phase VRM Design yama-AI Processors

Yakha umklamo wokulawula kusukela kusabelomali samandla sangempela sesitimela ngasinye. I-TDP ephelele yemojula ye-GPU ayikwazi ukuguqulwa ibe ugesi wesitimela esiyinhloko ngokuyihlukanisa nge-voltage eyodwa eyisisekelo ecatshangelwe. Khetha inani lesigaba kanye nokulayisha ngesigaba ngasinye usebenzisa ugesi wesitimela odingekayo, ama-transients omthwalo, imikhawulo yokulawula, izilinganiso zesigaba samandla kanye nezimo zokupholisa.

Ukusebenza kwezigaba eziningi ezihlanganisiwe kunganciphisa i-ripple futhi kusabalalise ukulahlekelwa kuzo zonke izigaba zamandla. Ukunciphisa i-ripple kanye nomthamo wokukhipha odingekayo kuncike ekubalweni kwesigaba, umjikelezo womsebenzi, i-inductance kanye nezidingo zesikhashana; akuzona iphesenti elinqunyiwe. Ukusebenza kokushisa kanye nokuphendula komthwalo nakho kuncike ekusetshenzisweni. Hlola ukubekezelelana kwamaphutha ngokwehlukana usebenzisa ukuziphatha kokuvikela okubhaliwe komlawuli kanye nomklamo wokuphindaphinda kohlelo.

Kepha ukwakheka kwezigaba eziningi kudinga ukunemba okukhethekile kwe-PCB. Zonke izigaba kufanele zifane:

• Ubude bokulandelela bufaniswe phakathi kuka-±1mm
• Ukubekwa kwengxenye ye-Symmetric
• Ukuhlangana okushisayo okulinganayo kuma-heatsink
• Kuyafana ngamaphethini

Ukungalingani kwamanje kungandisa ukucindezeleka kanye nokushisa kwezigaba ngazinye. Ukubekezelelana kwemizwa yamanje, ukwakheka, izikhathi zomthwalo kanye nokwehluka kwezinga lokushisa kuthinta ukwabelana, ngakho hlola indlela yokwabelana kwamanje yesilawuli esikhethiwe bese uqinisekisa umklamo ngaphansi kwezimo zayo zokusebenza. I-TI ichaza le miphumela ku- How to Balance Current Using Multiphase Converters.

Izigaba zamandla ze-DrMOS ezihlanganisiwe zingagxilisa ukushisa endaweni encane. Linganisela ukulahlekelwa kusuka kudatha yedivayisi ekhethiwe kanye nomthwalo wokusebenza, bese ubuyekeza iphethini yomhlaba enconywayo, indawo yethusi kanye nokwakheka kwe-thermal-via. Ukusatshalaliswa kwephakheji yendawo yonke noma ukubalwa kwe-via akukwazi ukusungula izinga lokushisa eliphephile le-junction. Sebenzisa imikhuba ye-PCB yokuphathwa kokushisa bese uqinisekisa ibhodi langempela kanye nokuhlelwa kokupholisa. Ukuze kubuyekezwe ukukhiqiza, nikeza i-stackup, ukwakheka kwedivayisi kanye nemikhawulo yokupholisa.

I-Thermal Architecture ye-24/7 AI Workloads

Ukuqeqeshwa kwe-AI kuqhubeka ngokuqhubekayo amasonto. Ngokungafani nemikhiqizo yabathengi enezikhathi zokungenzi lutho, amabhodi esikhungo sedatha asebenza ngamandla amakhulu njalo. Lokhu kudinga idizayini eshisayo ehlukile kunendlela evamile. Sisebenzisa ukuphathwa kwe-thermal okusekelwe endaweni eqaphela imikhawulo ehlukene yokushisa:

• Izigaba zamandla zibekezelela u-125°C
• Ama-inductors alahlekelwa ukusebenza kahle okungaphezu kuka-100°C
• Ama-Capacitor ehla ngokushesha ngaphezu kuka-85°C
• Izilawuli zikhawulelwe ku-105°C umkhawulo

Ukubekwa kwengxenye yamasu kudala izindawo ezishisayo. Iqoqo lezingxenye ezishisayo eduze nendawo yokungena komoya. Izingxenye ezizwelayo kukushisa zitholakala ezansi nomfula. Ugqinsi lwethusi luyahlukahluka ngendawo—6-10oz ezindaweni zamandla, izisindo ezijwayelekile zamasekhethi okulawula.

Ngaphezu kuka-300W ngebhodi ngalinye, ukupholisa umoya kuyahluleka. Ukuhlanganiswa kokupholisa uketshezi kuba yinto ebalulekile ngokufakwa kwepuleti elibandayo ngqo, amapayipi okushisa afakiwe ukuze asakazeke, kanye namakamelo omhwamuko ukuze kusebenze kahle kwe-isothermal. Lawa masu athuthukile afakazelwe ekwakhiweni kwethu kwe-PCB yokushaja okusheshayo kakhulu afinyelela emazingeni wamandla e-kilowatt.

Ubuqotho bamandla ukusuka ku-DC ukuya ku-GHz

Amaphrosesa e-AI awadingi nje amandla kuphela—adinga amandla ahlanzekile. Umsindo we-voltage udala amaphutha esikhathi, ukunciphisa imvamisa, nokwehluleka kwekhompyutha kubiza izigidi ngesikhathi sokuqeqeshwa esilahlekile. Inethiwekhi yokusabalalisa amandla (i-PDN) kufanele igcine i-impedance ephansi kuwo wonke amafrikhwensi. Okwephrosesa engu-500A ku-1V enokubekezela okungu-3%:

• I-ripple evunyelwe: 30mV
• I-impedance eqondiwe: 0.06mΩ
• Umkhawulokudonsa odingekayo: DC ukuya ku-100MHz+

Ukuzuza i-sub-milliohm impedance kudinga amasu aqondene nemvamisa:

• I-DC-1kHz: Izindiza zethusi ezinzima zinciphisa ukumelana
• 1kHz-1MHz: Amandla enqwaba ayabusa (izinkulungwane zama-microfarad)
• 1MHz-100MHz: Ama-Ceramic capacitor ahlinzeka ngokudlula imvamisa ephezulu
• Ngaphezulu kuka-100MHz: Izindiza ze-PCB zisebenza njengamandla asabalalisiwe

Sithuthukisa ububanzi bemvamisa ngayinye ngokukhetha izingxenye, ukwenza ngcono ukubekwa, kanye nomklamo we-stackup. Umphumela: ukulethwa kwamandla okuzinzile okuvumela ukusebenza okuphezulu kweprosesa ye-AI okuqinisekiswe ngobuchwepheshe bethu be-GaN power PCB high-frequency.

I-Redundancy kanye Nokuqapha Okukhaliphile

Ukubekezelela amaphutha kumele kwakhiwe ezingeni lesistimu. Isigaba esengeziwe sokulawula sodwa asisunguli ukuphindaphinda kwe-N+1 noma ukusebenza kwesiqinisekiso ngemuva kokwehluleka kwesigaba. Qinisekisa impendulo yephutha lomlawuli kanye nokwakheka kokuphindaphinda kokunikezwa kwamandla okudingekayo, ukuhlukaniswa, ukuvikelwa kanye nokuqapha. Ukuvimbela i-backfeed kanye nokusebenza kwe-hot-swap kudinga izifunda eziklanyelwe futhi zaqinisekiswa kuleyo misebenzi.

Ukuqapha okuhlakaniphile kulandelela yonke ipharamitha:

• Izinga ngalinye kanye namazinga okushisa
• Amamethrikhi okusebenza kahle nokuhlaziywa kwethrendi
• Ukutholwa kokwehluleka kokubikezela
• I-Real-time optimization algorithms

Ukulawula kwedijithali kuvumela izici ezithuthukisiwe njengokubeka amandla kagesi okuguquguqukayo, ukwenza ngcono impendulo okungeyona eqondile, kanye nokubikezela okusekelwe ekufundeni komshini. Imiklamo yethu ye-PCB yamandla okushintsha isekela lezi zinhlelo zokulawula eziyinkimbinkimbi ngokuhlanganiswa kwesignali exubile ngokucophelela.

imibuzo ejwayelekile ukubuzwa

Q: Kungani izikhungo zedatha zisebenzisa i-48V esikhundleni samandla angu-12V?
A: I-48V inciphisa i-4x yamanje uma iqhathaniswa ne-12V, inciphisa ukulahlekelwa ngo-16x futhi ithuthukisa ukusebenza kahle kakhulu. I-Highleap Electronics idizayina ama-PCB alungiselelwe i-48V ngesikhala esifanele, ukukhethwa kwengxenye, kanye nokuhlukaniswa okuqinisekisa ukusebenza okuphephile, okuphumelelayo ezindaweni zesikhungo sedatha.

Q: Iyini i-VRM ekwakhiweni kweseva?
A: Amamojula we-Voltage Regulator aguqula i-12V noma i-48V iye ku-0.8-1.2V edingwa amaphrosesa. Ama-VRM esimanje asebenzisa izigaba eziyi-16-32 ukuletha i-500-1000A. I-Highleap Electronics ikhiqiza ama-VRM PCB ezigaba eziningi asezingeni eliphezulu ane-impedance efanayo kanye namanethiwekhi okulethwa kwamandla e-sub-milliohm.

Q: Ashisa kangakanani ama-PCB esikhungo sedatha?
A: Akukho kushisa okuvamile kwe-PCB okuvamile. Hlukanisa amazinga okushisa azungezile, ubuso be-PCB, icala lengxenye kanye ne-junction, bese uqhathanisa izilinganiso noma izilinganiso eziqinisekisiwe nemikhawulo yezingxenye zangempela nezinto zebhodi. Umthwalo, ukuhamba komoya, ihadiwe yokupholisa kanye nendlela ephelele yokushisa kunquma amazinga okushisa okusebenza.

Q: Yini ebangela ukwehluleka kokunikezwa kwamandla kweseva?
A: Ukuwohloka kwezingxenye okuhlobene nokushisa, ukujikeleza kokushisa, ukucindezeleka ngokweqile kukagesi kanye nezinye izici zokuklama noma zokukhiqiza kungabangela ukwehluleka. Buyekeza izilinganiso zezingxenye ezifanele, izimo zesikhashana, izidingo zokuhlanganiswa kanye nemiphumela yokuqinisekisa yomklamo wangempela. Ukuze uthole isibuyekezo sokukhiqiza, nikeza i-stackup, i-BOM, amafayela okuhlanganiswa kanye nezidingo zokuhlola ezifanele.

Q: Zisebenza kahle kangakanani izinto zamandla zesikhungo sedatha yesimanje?
A: Imiklamo ehamba phambili ekilasini ifinyelela ku-94-96% ukusuka ku-48V kuya ku-voltage yephrosesa. Izakhiwo ezithuthukisiwe ze-Highleap Electronics zinciphisa ukulahlekelwa ngokunciphisa ukumelana, ukubekwa kahle, nezinto ezithuthukisiwe. Eyethu Imojula yamandla PCB imiklamo push ukusebenza kahle nakakhulu.