HDI PCB Thermal Management: Tataiso ea ho Rala & Mekhoa e Molemo ka ho Fetisisa

Bohlokoa ba HDI PCB Thermal Management

Sebopeho sa khokahano e nang le bongata bo boholo ba li-PCB tsa HDI se hlahisa liphephetso tse ikhethang tsa mocheso tse hlokang maano a ikhethileng a moralo. Methati e menyenyane, li-microvia, le likarolo tse tšesaane tsa dielectric li theha litsela tse thibelang mocheso tse fokotsang ho qhalana ha mocheso ka tlhaho. Likarolo tse matla tse kang liphutheloana tsa BGA le CSP li tsepamisa matla a mocheso mehatong e menyenyane, e leng se etsang hore tsamaiso e sebetsang ea mocheso oa HDI PCB e be ea bohlokoa bakeng sa ts'epo ea nako e telele.

Moqapi o sa lekaneng oa mocheso o baka mekhoa e tsoelang pele ea ho hlōleha e senyang ts'ebetso ea kopano. Mefokolo ena e kenyelletsa mokhathala o kopaneng oa solder, delamination lipakeng tsa likarolo tsa dielectric, ho phatloha ha moqomo oa microvia, le ho senyeha ha sesupo sa sesupo ho tloha ho liphetoho tse itšetlehileng ka mocheso. Bofokoli bo bongata ba mocheso bo bonahala ka mor'a ts'ebetso e atolositsoeng ea tšimo ho fapana le nakong ea tlhahlobo ea pele, e leng se etsang hore moralo o matla oa ho felisa mocheso o be bohlokoa bakeng sa bophelo bo bolelele ba sehlahisoa.

Taolo e nepahetseng ea mocheso meahong ea HDI e hloka ho theha phallo ea mocheso e lebelletsoeng esale pele ho tloha mehloling e kopaneng ho ea libakeng tsa ho qhalana. Khokahano ena e tlameha ho etsahala nakong ea methati ea pele ea meralo ho pholletsa le tlhaloso ea stackup, ka meaho, le ho beoa ha likarolo ho fapana le litokiso tsa morao-rao.

Moqapi oa Tsela ea Mocheso ho HDI PCB

Mohaho oa Phallo ea Mocheso

Moralo o atlehang oa tsela ea mocheso meahong ea HDI PCB o qala ka ho etsa 'mapa oa phallo ea mocheso ho tloha libakeng tsa tlhahiso ho pholletsa le litsela tse tsamaisang motlakase ho ea libakeng tse hasang motlakase. Mocheso o phalla ka ho khetheha ka har'a mealo ea koporo le li-via tse tlatsitsoeng ho fapana le li-dielectric tse tsamaisang motlakase tse tlase. Tsela ea mocheso e atoloha ho tloha ho li-pad tsa likarolo ho pholletsa le lifofane tsa koporo tse fumanehang sebakeng seo, ebe ka har'a mealo ea mocheso ho ea ho mealo e ka hare kapa e ka ntle e nang le boima bo boholo ba mocheso.

Mokhoa ona oa mekhahlelo o thibela libotlolo tsa mocheso tse hlahisang libaka tse hotspots tsa lehae. Baqapi ba tlameha ho theha litsela tse kholo tse futhumatsang ka boomo tse tataisang mocheso hole le likarolo tsa bohlokoa ho isa lifofaneng tse jalang mocheso le likhokahano tsa kantle.

Lintho tse ka sehloohong tsa HDI Heat Dissipation Design

Tsamaiso e atlehileng ea mocheso likopanong tsa HDI PCB e hloka ts'ebetsong e hokahaneng ea likarolo tse ngata tsa moralo:

• Sefofane sa koporo se jalang - Lifofane tsa ka hare tsa fatše kapa tsa matla tse behiloeng haufi le likarolo tse matla tse matla li fana ka phepelo e fokolang ea mocheso oa mahlakoreng a mabeli ka conductivity ea mocheso e fetang dielectrics ka 200 ×.
• Thermal ka li-arrays - E otlolohileng ka li-conduits e hokela likarolo tsa likarolo ho lifofane tse hasoang mocheso, tse nang le tlhophiso ea via-in-pad e fanang ka tsela e khuts'oane ea mocheso leha e hloka lits'ebetso tse khethehileng tsa ho tlatsa.
• Stackup symmetry - Litokisetso tse leka-lekaneng tsa lera li thibela ntoa ho tloha katolosong e fapaneng ea mocheso ha e ntse e ntlafatsa botenya ba dielectric ho fokotsa ho hanyetsa mocheso.
• Leano la ho beha likarolo - Ho beha lisebelisoa tsa matla a phahameng haufi le mocheso ka libaka le likarolo tse hasang mocheso ho fokotsa bolelele ba tsela ea mocheso.

Thermal Via Design bakeng sa HDI PCB

Li-microvia tse foufetseng le tse patiloeng li sebetsa mesebetsi e 'meli e le likhokahano tsa matšoao le liphaephe tsa mocheso ha li entsoe ka thepa ea ho tlatsa koporo. Li-via tse tletseng koporo li fana ka phallo e phahameng ea mocheso ha li bapisoa le mekhoa e meng e sa tlatsoang. Tse pakiloeng kapa tse rapameng ka litlhophiso li nolofalletsa phetiso ea mocheso ka liphetoho tse ngata tsa lera ha li ntse li boloka mehato e menyenyane, ka katleho ea mocheso e lekanyang ka ho toba ka boleng ba palo le ho tlatsa.

Botenya ba Koporo le Kabo ho HDI Thermal Design

Khetho ea Boima ba Koporo

Botenya ba koporo ba motheo bo ama ka ho toba matla a ho hasana a mocheso ka har'a lera le leng le le leng la PCB. Koporo e tloaelehileng ea 1 oz e fana ka ts'ebetso e lekaneng bakeng sa matla a matla a itekanetseng, ha koporo ea 2 oz kapa 3 oz e ntlafatsa haholo ho hasana ha mocheso bakeng sa lisebelisoa tsa matla a phahameng. Koporo e teteaneng e fokotsa khanyetso ea mocheso empa e hloka sebaka se pharalletseng sa ho latela sebaka ho boloka ho itšehla thajana le ho eketsa ho rarahana ha tlhahiso.

Ho roala ka koporo ho thusa ho eketsa botenya bo lebisitsoeng libakeng tse bohlokoa haholo ha ho ntse ho bolokoa koporo e tloaelehileng bakeng sa libaka tse tsamaisang mats'oao. Mokhoa ona o ntlafatsa moralo oa HDI oa ho qhala mocheso ntle le ho kenya litšenyehelo tse felletseng tsa koporo.

Ho leka-lekanya Ts'ebetso ea Thermal le Motlakase

Mekhahlelo e fapaneng ea ts'ebetso e hloka maano a fapaneng a botenya ba koporo ho ntlafatsa taolo ea mocheso le ponts'o ea matšoao:

• Mekhahlelo ea lipontšo - Koporo e tšesaane (0.5-1 oz) e boloka taolo e nepahetseng ea ho thibela le ho fokotsa tahlehelo ea letlalo bakeng sa matšoao a maqhubu a phahameng.
• Lifofane tsa motlakase - Koporo e boima haholo (2-3 oz) e ntlafatsa ho hasana ha mocheso le ho fokotsa khanyetso ea DC ntle le ho sekisetsa litlhoko tsa ho tsamaisana le impedance.
• Libaka tsa mocheso - Mekhabiso e ikhethileng libakeng tsa likarolo tse nang le matla a phahameng e fana ka ntlafatso ea ho felisa mocheso sebakeng sa heno.
• Ho leka-lekanya koporo - Kabo e tšoanang ea koporo ho pholletsa le liphanele e thibela warpage ho tloha katoloso e fapaneng ea mocheso nakong ea lamination le kopano.

Kabo e tšoanang ea koporo e fetoha ea bohlokoa meahong ea HDI moo botenya bo tšesaane bo eketsang ts'oaetso ea ho senyeha ho bakoang ke mocheso. Baqapi ba lokela ho kenya ts'ebetsong mekhoa ea ho leka-lekanya ea koporo libakeng tse fokolang tsa litsela ho boloka botsitso ba mochine tlas'a khatello ea mocheso.

Khetho ea Boitsebiso bakeng sa Tsamaiso ea Thermal ea HDI PCB

Dielectric Thermal Properties

Ho tsamaisa mocheso ha thepa ea motheo ea dielectric ho theha moeli oa motheo oa phetisetso ea mocheso ka bophara ho li-stackups tsa HDI PCB. FR-4 e tloaelehileng e bontša ho tsamaisa mocheso ka bophara ba 0.3-0.4 W/mK, ha mekhoa e meng ea ts'ebetso e phahameng ho kenyeletsoa polyimide, BT resin, kapa li-laminate tse khethehileng tsa ho tsamaisa mocheso o phahameng li fana ka ts'ebetso e ntlafetseng hanyane. Khetho ea thepa e tlameha ho leka-lekanya litlhoko tsa mocheso khahlanong le thepa ea motlakase ho kenyeletsoa le kamehla ea dielectric, tangent ea tahlehelo, le coefficient ea katoloso ea mocheso.

Mehaho ea tšepe ea mantlha kapa e kentsoeng ka tšepe e fana ka ts'ebetso e matla ea mocheso ka ho kenyelletsa lipoleiti tsa aluminium kapa koporo ka har'a stackup. Mehaho ena ea lebasetere e thusa ho fetisetsa mocheso o tobileng ho lithabeng tsa mocheso o ka ntle ha o ntse o boloka ho itšehla thajana ha motlakase ka likarolo tse tšesaane tsa dielectric.

HDI Stackup Thermal Performance Optimization

Tlhophiso ea 'mele ea likarolo tsa koporo le dielectric e khetholla katleho ea tsela ea mocheso ho tloha libakeng tsa likarolo ho pholletsa le botenya bo felletseng ba boto. Ho beha lifofane tsa koporo tse tsoelang pele haufi le libaka tse khomaretsoang ho fokotsa bolelele ba tsela ea mocheso ho tloha mehloling ea mocheso. Lamination e latellanang tlhahisong ea HDI e etsa li-interface tse arohaneng tsa mocheso moeling o mong le o mong, 'me li-interface tsena li hlahisa khanyetso e kopaneng ea mocheso ho pholletsa le liphetoho tse ngata tsa lera.

Maemo a maoatle a mocheso ka likhokahano lipakeng tsa core le buildup layers e netefatsa litsela tse sa khaotseng tsa ho phalla ha mocheso ka botebo bo felletseng ba stackup. Ts'ebetso ea mocheso e tsoetseng pele ea HDI e hloka ts'ebetso e felletseng e nkang ts'ebetso ea mocheso oa thepa le katleho ea meralo ea tatellano ea lera.

Thermal Simulation le Analysis ho HDI PCB Design

Computational Modeling Tools

Liphutheloana tsa sejoale-joale tsa papiso ea mocheso ho kenyelletsa ANSYS, HyperLynx, FloTHERM, le ICEpak li thusa ho bolela esale pele ka kabo ea mocheso pele ho tlhahiso ea mohlala. Lisebelisoa tsena tsa finite element kapa computational fluid dynamics li hloka li-parameter tse nepahetseng tse kenyellelitsoeng ho kenyelletsa ho felloa ke matla ka likarolo, geometry ea koporo, conductivity ea mocheso oa thepa, le maemo a moeli a emelang tikoloho ea ts'ebetso. Botšepehi ba sephetho bo itšetlehile haholo ka ho nepahala ha kenyelletso le tharollo ea mesh e sebelisoang ho khetholla geometry.

Ketsiso ea mocheso moralong oa HDI PCB e lokela ho kenyelletsa tlhahlobo ea ho phahama ha mocheso o tsitsitseng le karabelo ea mocheso e potlakileng ho liprofaele tsa motlakase tse tsamaisoang ke pulsed. Tlhahlobo ea boemo bo tsitsitseng e khetholla mocheso o sebetsang ka sehlohlolong le ho netefatsa meeli ea mocheso, ha tlhahlobo ea nakoana e senola linako tse sa fetoheng tsa mocheso nakong ea liketsahalo tsa potoloho ea motlakase.

Ketsiso Tiisetso Tshebetso

Tlhahlobo e nepahetseng ea mocheso le mohlala oa ho qhala mocheso o hloka ho netefatsoa ka mokhoa o hlophisitsoeng ka tekanyo ea 'mele:

• Setšoantšo sa infrared thermal - 'Mapa oa mocheso o sa amaneng le libaka tse kopaneng tsa PCB o supa libaka le matla a hotspot.
• Li-thermocouples tse kentsoeng - Tekanyo e tobileng ea mocheso likarolong tsa bohlokoa tsa likarolo e tiisa likhakanyo tse phahameng tsa mocheso.
• Kamano ea mohlala - Papiso e hlophisitsoeng pakeng tsa mocheso o boletsoeng esale pele le o lekantsoeng o theha maemo a kholiseho le ho khetholla libaka tsa ntlafatso.
• Pheta-phetoho ea moralo - Mefuta ea mocheso e lekantsoeng e thusa ho lekola mefuta e fapaneng ea meralo maemong a fapaneng a ts'ebetso ka lipotoloho tse nyane tsa prototype.

Ho tsebahatsa pele litaba tsa mocheso ka ketsiso ho thibela ho hlophisoa bocha ho bitsang chelete e ngata 'me ho potlakisa nako ea ho bapatsa bakeng sa lits'ebetso tse thata tsa HDI PCB tsa taolo ea mocheso.

Teko ea ho Tšepahala ha Mocheso bakeng sa HDI PCB

Teko e Potlakileng ea Khatello ea Mocheso

Lithuto tse potlakisang tsa libaesekele tse futhumatsang li ile tsa kopanya li-HDI PCB ho ea maetong a khafetsa a thempereichara a etsisang ho pepeseha ha masimo nako e telele ka linako tse hatelitsoeng. Melao-motheo e tloaelehileng e kenyelletsang tlhahlobo ea mocheso oa mocheso, ho palama libaesekele, le tlhahlobo e potlakileng ea bophelo e beha khatello ea maikutlo e senolang ho hloleha ho sa bonahaleng litseleng tsa mocheso, manonyeletso a solder le li-interface tsa dielectric. Mekhoa ena ea tlhahlobo ea ho tšepahala ha mocheso e pepesa bofokoli ba moralo pele ho tlhahiso ea molumo le ho netefatsa maano a taolo ea mocheso.

Mokhathala o futhumatsang o bonahala ka tsela e fapaneng ho pholletsa le meaho ea HDI ho ipapisitse le meaho, botenya ba koporo le lisebelisoa tsa thepa. Ho tšepahala ha Microvia tlas'a libaesekele tse futhumatsang ho ipapisitse le boleng ba ho roala barrel, botlalo bo tlatsitsoeng, le ho se lumellane ha katoloso ea mocheso lipakeng tsa thepa ea ho tlatsa le dielectric e potolohileng.

Thibelo ea Tšenyo ea Tikoloho

Mocheso o phahameng le mongobo li potlakisa liketsahalo tsa ho falla ha electrochemical ho kenyelletsa le sebopeho sa anodic filament lipakeng tsa li-conductor tse haufi. Moralo o sebetsang hantle oa mocheso o bolokang mocheso o tlase oa ts'ebetso o fokotsa kinetics ea degradation. Thibelo ea CAF ka moralo oa mocheso o kenyelletsa ho fokotsa mocheso o phahameng, ho khetha lisebelisoa tse tsitsitseng tsa dielectric tse nang le motsamao o tlase oa ion, le ho netefatsa sebaka se lekaneng libakeng tse hatelletsoeng ke mocheso.

Teko ea ho tšoaneleha e lokela ho kopanya khatello ea mocheso le mongobo ho lekola mekhoa ea ho hloleha e felletseng e amanang le ts'ebetso ea tšimo. Ho utloisisa litšebelisano lipakeng tsa mocheso le maemo a tikoloho ho nolofalletsa liqeto tsa moralo tse ntlafatsang ts'epahalo ea HDI PCB le ts'ebetso ea nako e telele tlasa maemo a ts'ebeliso ea nnete.

Litlhahiso tse sebetsang tsa HDI PCB Thermal Management

Kopano ea Moqapi oa Mehato ea Pele

Ho kenyelletsa tlhahlobo ea mocheso nakong ea moralo oa pele oa moralo le moralo ho thibela mathata a meralo ao ho leng thata ho a rarolla hamorao. Ho bea lisebelisoa ho lokela ho beha lisebelisoa tsa matla a phahameng haufi le thermal ka libaka le ho qoba ho kopanya mehloli ea mocheso libakeng tse koaletsoeng. Tšebelisano ea pele le bahlahisi ba HDI mabapi le bokhoni ba boima ba koporo, lits'ebetso tsa ho tlatsa, le stackup conductivity ea mocheso e netefatsa hore maano a moralo a lumellana le bokhoni ba ts'ebetso ea tlhahiso.

Litlhahlobo tsa moralo oa mocheso li lokela ho etsahala ka mekhahlelo e mengata e kenyeletsang ho beoa, ho tsamaisa, le mekhahlelo ea pele ho ho lokolloa ho netefatsa hore litsela tsa mocheso li lula li le teng le hore mocheso oa likarolo o lula o le ka har'a meeli e boletsoeng ho mefuta eohle ea ts'ebetso.

Khokahano ea Ts'ebetso ea Tlhahiso

Moralo o atlehileng oa ho felisa mocheso oa HDI o hloka tšebelisano e haufi lipakeng tsa merero ea moralo le bokhoni ba ho etsa masela:

• Tlhaloso ea koporo - Netefatsa lits'oants'o tse tlase tsa koporo le boima bo ka fihlellehang ba koporo bakeng sa lifofane tse matla tsa sejoale-joale le ho tšela mocheso.
• Mekhoa ea ho tlatsa - Netefatsa hore ho tlatsoa ho se nang letho ho holisa mocheso oa mocheso ka lits'ebetso.
• Plating e khethehileng - Netefatsa bokhoni ba moetsi bakeng sa ho roala ka koporo pele u phethela litlhaloso tsa libaka tse futhumetseng.
• Monyetla oa ho bokella - Lekola meaho e reriloeng bakeng sa mocheso ka likhokahano lipakeng tsa mantlha le li-buildup layers.

Ho kopanngoa ha litšitiso tsa meralo ea motlakase, ea mechini le ea mocheso ho hloka tšebelisano-'moho ho pholletsa le lipotoloho tsa nts'etsopele. Litharollo tse sebetsang ka ho fetesisa tsa mocheso li hlaha ha menahano ea mocheso e susumetsa khetho ea likarolo, tlhaloso ea pokello ea PCB, le moralo oa ts'ebetso ea kopano ho tloha qalong ea projeke.

fihlela qeto e

Tsamaiso e sebetsang ea mocheso ea HDI PCB e kopanya khetho ea thepa, kabo ea koporo, le litsela tsa mocheso tse thehiloeng ho eona tse nang le moralo o tsamaisoang ke papiso. Ka lebaka la khaello e fokolang ea mocheso ka har'a meaho e teteaneng, baqapi ba tlameha ho ntlafatsa phallo ea mocheso, botenya ba koporo le ho tsamaisa li-stackup. Ho theha litsela tse sebetsang hantle tsa mocheso ho tloha mehloling ea mocheso ho ea libakeng tsa ho qhala-le ho sebelisana haufi-ufi le bahlahisi-ho netefatsa ts'ebetso e tšepahalang, e ka hlahisoang.

Highleap Electronics e fana ka litharollo tse felletseng tsa taolo ea mocheso oa HDI PCB:

• Moralo o tsoetseng pele oa li-stackup - Litlhophiso tse ntlafalitsoeng tsa lera le likhetho tsa dielectric tse leka-lekaneng ho tsamaisa mocheso le litlhoko tsa ts'ebetso ea motlakase.
• Thermal ka boenjiniere - Tlatsa lits'ebetso tsa ho tlatsa ka ho tlatsa, ho kenyelletsa le plating ea koporo e eketsang phetiso ea mocheso ka meaho ea HDI.
• Tšehetso ea ketsiso - Litšebeletso tsa ho etsa mohlala le ho hlahloba mocheso o bolelang esale pele kabo ea mocheso le ho netefatsa katleho ea moralo.
• Tsebo ea tlhahiso - Khetho e ikhethileng ea koporo le bokhoni bo boima ba koporo bakeng sa ntlafatso ea libaka tse futhumetseng.
• Tšebelisano ea moralo - Tšehetso ea boenjiniere bakeng sa ho beha likarolo, moralo oa tsela ea mocheso, le ho netefatsa ho tšepahala.

Sehlopha sa rona sa boenjiniere se sebetsa haufi-ufi le bareki ho nts'etsapele maano a taolo ea mocheso a fihlelang litlhoko tse boima tsa ts'ebetso bakeng sa lits'ebetso tse tšepahalang haholo ha ka nako e ts'oanang ho boloka ts'ebetso e ntle le katleho ea tlhahiso. Ikopanye le sehlopha sa rona ho buisana ka litlhoko tsa hau tsa moralo oa mocheso oa HDI.