Tataiso ea ba qalang ho Metal Core PCBs

Liboto tsa Potoloho tse Hatisitsoeng tsa Metal Core (MCPCBs) li bohlokoa haholo elektroniki ea kajeno bakeng sa ho laola mocheso o hlahisoang ke likarolo tse matla haholo. Ka ho kopanya substrate ea tšepe—hangata aluminium, koporo, kapa motsoako oa koporo—liboto tsena li fana ka conductivity e phahameng ea mocheso ha e bapisoa le li-PCB tse tloaelehileng tsa FR4.

Bakeng sa ba qalang, ho utloisisa hore na li-MCPCB li sebetsa joang ho qala ka ho tseba lisebelisoa tsa bona tsa mantlha, mefuta ea kaho le melemo ea ts'ebetso. Sengoliloeng sena se fana ka kakaretso e hlakileng ea li-cores tse sebelisoang hangata, mefuta e meholo ea meralo, melemo ea mantlha, le lits'ebetso tse sebetsang tsa Metal Core PCB ho pholletsa le liindasteri tse joalo ka mabone a LED, lisebelisoa tsa elektroniki tsa likoloi le lisebelisoa tsa motlakase.

Metal Core PCB ke eng?

Metal Core PCBs (MCPCBs) e emela sehlopha se ikhethileng sa liboto tsa potoloho tse hatisitsoeng tse kopanyang likarolo tsa tšepe-haholo-holo aluminium kapa koporo-e le lisebelisoa tsa bona tsa motheo ho e-na le fiberglass ea setso ea FR4. Phapang ena ea motheo ea moralo e nolofalletsa litekanyetso tsa mocheso oa 1-4 W/mK, tse fetang ka mokhoa o makatsang li-PCB tse tloaelehileng ho 0.3 W/mK.

Mehaho e na le likarolo tse tharo tsa bohlokoa tse sebetsang ka kutloano:

• Metal Base Layer - E fana ka ts'ehetso ea sebopeho le tsela e ka sehloohong ea ho senya mocheso
• Thermally Conductive Dielectric - Motlakase o itšehla thajana ha o ntse o boloka phetiso ea mocheso
• Lera la Potoloho ea Koporo - E na le matšoao a motlakase a nang le botenya bo tloaelehileng ho tloha ho 1-4 oz

Kaho ena e theha tsamaiso e sebetsang hantle ea mocheso moo mocheso o phallang ka ho toba ho tloha likarolong ka dielectric ho kena ka har'a substrate ea tšepe, ebe o qhala ho pholletsa le boto eohle. Bakeng sa lits'ebetso tse fetang 1W ka karolo e 'ngoe, theknoloji ena e ba ea bohlokoa bakeng sa ho boloka mocheso o bolokehileng oa ts'ebetso le ho netefatsa ts'epo ea nako e telele.

Li-cores tse sebelisoang hangata ho Metal Core PCBs

Aluminium Core Substrates

Aluminium e laola 'maraka oa tšepe oa PCB, e ikarabellang ho feta 75% ea lits'ebetso ka lebaka la tekanyo e nepahetseng ea ts'ebetso le moruo. Li-substrates tse tloaelehileng tsa aluminium li fana ka:

• Ts'ebetso ea Mocheso - 2.0-2.2 W / mK conductivity bakeng sa ho hasana ha mocheso hantle
• Boima Molemo - 60% e bobebe ho feta mekhoa e meng ea koporo
• Bokgoni ba Litšenyehelo - makhetlo a 3-5 a theko e tlase ho feta likhetho tsa mantlha tsa koporo
• Sekhahla - E lumellana le lisebelisoa tse tloaelehileng tsa ho sebetsa tsa PCB

Li-alloys tse tloaelehileng tsa aluminium li kenyelletsa 5052 bakeng sa lits'ebetso tse akaretsang le 6061 bakeng sa matla a ntlafalitsoeng a mochini. Liphekolo tse holimo tse kang anodization li eketsa ho hanyetsa kutu ha li ntse li boloka ts'ebetso ea mocheso ka har'a 5% ea boleng ba tšepe e se nang letho.

Litharollo tsa Copper Core

Li-substrates tsa koporo li ipabola lits'ebetsong tse futhumatsang haholo le tsa maqhubu a phahameng moo ts'ebetso e lokafatsang litšenyehelo tsa pele. Litšobotsi tsa bohlokoa li kenyelletsa:

• Superior Thermal Conductivity - 400 W/mK e thusa meralo ea matla a phahameng haholo
• Tšireletso ea motlakase ea motlakase - Tšireletso ea EMI ea tlhaho bakeng sa lipotoloho tse hlokolosi
• Matla a Mechini - 2x e matla ho feta aluminium bakeng sa lits'ebetso tse hananang le vibrate
• Mocheso - Katoloso e nyane e netefatsa ho ts'epahala ka ho palama baesekele e futhumetseng

Leha ho na le litšenyehelo tse phahameng le ho rarahana ha tšebetso, koporo e sebetsa hantle ha matla a matla a feta 10W/cm² kapa ha a kopanya taolo ea mocheso le litlhoko tsa tšireletso ea RF.

Lisebelisoa tse tsoetseng pele tse kopantsoeng

Lisebelisoa tse ntseng li hlaha li sebetsana le liphephetso tse ikhethang tsa ts'ebeliso ho feta li-substrates tsa tšepe tsa setso:

• Aluminium Silicon Carbide (AlSiC) - Semiconductor e lumellanang le CTE ea shoa (7-9 ppm/°C)
• Koporo-Invar-Copper (CIC) - Katoloso e tlase bakeng sa lits'ebetso tsa sesole tse tšepahalang haholo
• Koporo-Molybdenum - E ntlafalitsoe bakeng sa li-module tsa laser diode le RF ea amplifier ea matla

Mefuta e ka Sehloohong ea Metal Core PCBs

Li-PCB tsa Lera le le leng la Metal Core

Sebopeho se bonolo ka ho fetisisa le se sebelisoang ka ho fetisisa se na le sekhahla se le seng sa potoloho ea koporo se kopantsoeng ka ho toba le substrate ea tšepe. Ka botenya bo fokolang ba dielectric, tlhophiso ena e fana ka ts'ebetso e ntle ea mocheso le tlhahiso e theko e tlaase, e etsa hore e be e loketseng bakeng sa mabone a LED a phahameng haholo le lisebelisoa tsa motheo tsa matla tse sebetsanang le 50 W ea ho senya matla ka kakaretso. Tlhahiso e latela mekhoa e tloaelehileng ea PCB e fetotsoeng bakeng sa metheo ea tšepe, ho kenyeletsoa le mekhoa e ntlafalitsoeng ea ho cheka le mekhoa ea etching ho sireletsa motheo oa aluminium.

Li-PCB tsa Metal Core tse Mabeli le Mahlakore a Habeli

Mofuta oa 1: Koporo - Dielectric - Koporo - Dielectric - Core

Mofuta ona o eketsa lera la bobeli la koporo le arotsoeng ke prepreg ea thermally conductive holim'a motheo o tšoanang oa tšepe. Moralo o eketsa sets'oants'o sa routing ka li-vias tse patiloeng ha o ntse o boloka phallo e sebetsang hantle ea mocheso. E ts'ehetsa li-circuitry tse rarahaneng bakeng sa li-module tsa taolo ea likoloi le li-converter tsa matla tse sebetsang ho fihlela ho 100 W. Pokello eohle ea potoloho e teng ka lehlakoreng le leng la substrate ea tšepe, e leng se etsang hore e tšoanelehe bakeng sa likopo tse hlokang ho tsamaisoa ha compact ntle le ho behoa ha likarolo tse peli.

Mofuta oa 2: Koporo - Dielectric - Core - Dielectric - Koporo

Tlhophiso ena, lipotoloho tsa koporo li entsoe ka mahlakoreng a mabeli a motheo oa tšepe, e leng se lumellang hore likarolo li be holim'a sebaka se seng le se seng. Li-pass-hole li tlameha ho koaheloa ho tloha mokokotlong oa conductive ho netefatsa hore motlakase o arohane. Leha ts'ebetso ea mocheso e fokotsehile hanyenyane ha e bapisoa le meralo ea lera le le leng kapa meralo e habeli, li-MCPCB tse mahlakoreng a mabeli li fana ka ts'ebeliso e ntle ea sebaka 'me li sebelisoa haholo phepelong ea motlakase e kopaneng le likopanong tse ling tse phahameng haholo.

Li-PCB tsa Multi-Layer Metal Core

Bakeng sa lits'ebetso tse phahameng haholo le tse matla haholo, likarolo tse ngata tsa potoloho li ka beoa ka holim'a substrate ea tšepe. Li-vias tse foufetseng le tse patiloeng li nolofalletsa likhokahano tse rarahaneng, empa katleho ea mocheso e fokotseha ho feta likarolo tse 'nè ho isa ho tse tšeletseng,' me litšenyehelo tsa tlhahiso li nyoloha haholo. Meaho e joalo e sebelisoa hangata lisebelisoa tsa mehala ea mehala, bakhanni ba LED ba matla a phahameng, le lits'ebetso tse ling tse tsoetseng pele moo ts'ebetso ea motlakase e fetang ho nahanoa ka litšenyehelo.

Melemo ea Metal Core PCBs

Tsamaiso e Phahameng ea Thermal

Theknoloji ea Metal core e hlile e fetola phallo ea mocheso lits'ebetsong tsa elektroniki:

• 10x Ho Hasoa ha Mocheso ho Molemo - Li-cores tsa Aluminium li tsamaisa mocheso ho pholletsa le sebaka sohle sa boto, li felisa libaka tse hotspots tsa lehae
• 50% Phokotso ea Mocheso oa Junction - Ho kopanya mocheso o tobileng ho theola mocheso oa motsoako ha o bapisoa le meralo ea FR4
• E felisa li-Heatsinks tsa Kantle - Tsamaiso e kopanetsoeng ea mocheso e fokotsa ho rarahana ha tsamaiso le litšenyehelo tsa kopano

Tšepahala e Matlafalitsoeng le Tšireletseho

Substrate e thata ea tšepe e fana ka melemo ea mochini ho feta melemo ea mocheso:

• Khanyetso ea Vibration - Li-cores tsa tšepe li fokotsa ho fetoha ha PCB, ho lelefatsa bophelo bo kopaneng ba solder libakeng tse thata
• Botsitso ba Dimensional - CTE e tlase ho feta FR4 e fokotsa khatello ea maikutlo nakong ea libaesekele tse futhumetseng
• Nako e Atolositsoeng ea Bophelo ba Sehlahisoa - Lithempereichara tsa ts'ebetso e pholileng habeli MTBF bakeng sa likarolo tse ngata

Boima ba Boima le Sebaka

Leha ho na le tšepe, liboto tsena hangata li fokotsa boima ba sistimi:

• 40% Phokotso ea Boima - Ho felisa li-heatsink tse arohaneng le lisebelisoa tsa sehokelo sa mocheso
• 30% Poloko ea Sebaka - Tharollo e kopantsoeng ea mocheso e nolofalletsa meralo ea lihlahisoa tse kopaneng
• Kopano e Nolofalitsoeng - Likarolo tse fokolang li fokotsa ho rarahana ha tlhahiso

Melemo ea Tikoloho

Li-PCB tsa Metal core li tsamaisana le matsapa a ts'ebetso:

• Lisebelisoa tse ka sebelisoang hape - Li-cores tsa aluminium le koporo li ka khutlisoa ka botlalo
• Matla a Matla - Taolo e ntle ea mocheso e fokotsa litlhoko tsa ho pholisa
• RoHS tletlebo - Mekhoa e se nang ketapele e tsamaellanang le melaoana ea tikoloho

Lisebelisoa tsa Metal Core PCBs

Lisebelisoa tsa Leseli tsa LED

Indasteri ea LED e tsamaisa tlhoko e kholo ka ho fetisisa ea tlhahiso ea tšepe ea mantlha ea PCB, ka lits'ebetso tse akaretsang:

• Lisebelisoa tsa LED tse Matla a Phahameng - Li-LED tsa COB tse fetang 50W li hloka likaroloana tsa tšepe ho boloka mocheso oa 85 ° C
• Mabone a Seterateng le Setediamong - Lisebelisoa tsa 200-500W li ipapisitse le li-PCB tsa aluminium bakeng sa ho pholisa feela
• Mabone a Likoloi - Metal cores e thusa litsamaiso tsa matrix tsa LED tse feto-fetohang tse nang le li-emitter tse fetang 100
• Sistimi ea ho folisa UV - Li-LED tsa liindasteri tsa UV tse hlahisang 20W/cm² li itšetlehile ka likaroloana tsa koporo

Taolo e nepahetseng ea mocheso e eketsa nako ea bophelo ba LED ho tloha ho lihora tse 25,000 ho isa ho tse 50,000+ ha e ntse e boloka botsitso ba mebala le tlhahiso e khanyang.

Matla a Elektronike le Liphetoho

Sistimi ea sejoale-joale ea motlakase e sebelisa theknoloji ea mantlha ea tšepe bakeng sa ts'ebetso e ntlafalitsoeng:

• Bafetoleli ba DC-DC - Li-module tsa 1kW li fihlella katleho ea 95%+ ka taolo e phahameng ea mocheso
• Likoloi tsa makoloi - Li-drive frequency tse feto-fetohang li sebelisa li-substrates tsa aluminium bakeng sa pholiso ea IGBT
• Li-inverters tsa letsatsi - Li-cores tsa tšepe li etsa hore ho be le matla a phahameng a matla a ho kenngoa marulelong
• Liteishene tsa ho tjhaja tsa EV - Lichaja tse potlakileng li sebelisa liboto tsa mantlha tsa koporo bakeng sa phepelo ea matla a 350kW

Likoloi tsa Elektroniki

Lisebelisoa tsa likoloi li hloka ho ts'epahala ka tsela e ikhethang maemong a feteletseng:

• Lihlopha tsa Taolo ea Enjene - Pholoha tikolohong ea 125 ° C ka tlas'a hood bakeng sa lilemo tse 15+
• Bakhanni ba Lebone la Leseli la LED - Sistimi ea mabone e feto-fetohang e hloka taolo e nepahetseng ea mocheso
• Li-Inverters tsa Likoloi tsa Motlakase - Li-substrates tsa tšepe li sebetsana le phetoho ea matla a 100kW+
• Lisebelisoa tsa ADAS - Lits'ebetso tsa radar le lidar li rua molemo ho ts'ireletso e kopaneng ea EMI

Mehala ea likhokahanyo

5G le ho feta e hloka litharollo tse tsoetseng pele tsa mocheso:

• Li-amplifiers tsa Base Station - Sistimi e kholo ea MIMO e nang le liketane tse 64+ tsa RF ho 50W e 'ngoe le e 'ngoe
• Mekhatlo e Menyane ea Lisele - Mehaho e kopaneng ea litoropo e hloka pholile e kopaneng
• Li-transceivers tsa Fiber Optic - Li-module tsa 400G li hlahisa mocheso o moholo libakeng tse koaletsoeng
• Puisano ea Satellite - Lisebelisoa tsa sebaka li sebelisa lisebelisoa tse khethehileng tsa mantlha tsa tšepe

fihlela qeto e

Li-PCB tsa Metal Core li bapala karolo ea bohlokoa ho laola mocheso bakeng sa lisebelisoa tsa elektroniki tse matla le tse tšepahalang haholo. Ho utloisisa lisebelisoa tsa bona tsa mantlha, mefuta ea sebopeho, le melemo ea ts'ebetso ho fana ka motheo o tiileng ho mang kapa mang ea qalang ka moralo oa PCB kapa taolong ea mocheso. Ha thekenoloji e ntse e tsoela pele, li-MCPCB li ntse li tsoela pele ho etsa hore ho be le mekhoa e mecha ea mabone a LED, lisebelisoa tsa elektroniki tsa likoloi le lisebelisoa tsa motlakase tse baballang matla.

Bakeng sa ba qalang, ntho ea bohlokoa ka ho fetisisa ke hore ts'ebetso e atlehileng ea mocheso e itšetlehile ka ho khetha thepa e nepahetseng le ho utloisisa hore na likaroloana tsa tšepe li ntlafatsa joang mocheso. Ha boiphihlelo ba hau ba moralo bo ntse bo hola, ho lekola lintlha tse qaqileng joalo ka khetho ea dielectric, tlhophiso ea li-stack-up, le lithibelo tsa tlhahiso ho tla ntlafatsa le ho feta bokhoni ba hau ba ho theha li-circuits tse matla tse phahameng.

Ho Highleap Electronics , re lumela hore ho arolelana tsebo ea tekheniki ho thusa baenjiniere ho etsa liqeto tse betere tsa moralo. Sehlopha sa rona se ntse se tsoela pele ho fana ka lisebelisoa tsa thuto le temohisiso e sebetsang mabapi le mahlale a PCB, ho kenyeletsoa Metal Core, HDI, le Flexible PCBs — ho u thusa ho tloha kutloisisong ea motheo ho ea ts'ebelisong e nang le boits'epo.