12 PCB Thermal Management Techniques Iwe Unofanirwa Kuziva

Nekuramba kuchiwedzera kuomarara uye kuwanda kwesimba kwemidziyo yemazuva ano yemagetsi, kubata kupisa muPrinted Circuit Boards kwave chinhu chakakosha pakugadzira nekugadzira. Inoshanda PCB yekudziya yekudziya manejimendi maitiro anovimbisa kuita kwakaringana, inosimudzira kuvimbika kwezvinhu zvemagetsi, uye inowedzera hupenyu hwechishandiso. Ichi chinyorwa chinoongorora akasiyana matekiniki eiyo inoshanda PCB yekupisa manejimendi.

1. Heat Sinks uye Cooling Fans

Heat sinks ndeye thermally conductive metallic zvikamu zvakanamirwa kune magetsi transistors, microprocessors, uye zvimwe zvinopisa zvinogadzira. Vanobvisa kupisa pamusoro penzvimbo yakakura kune zvakakomberedza. Mune mamwe ma-high-simba maapplication, kuwedzera kutonhora mafeni kunowedzera kupisa kwekubvisa kushanda.

2. Thermal Vias

Thermal vias ari conductive makomba ari PCB kuti kufambisa kupisa kutamisa kubva inopisa zvinoriumba kuti inotonhorera nzvimbo bhodhi. Dzinogona kuzadzwa neyakadzikira yekupisa yekudzivirira epoxy, uye dzimwe nguva yakadzika kune yemukati ndege dzemhangura yekuvandudza kupisa kwekupisa.

3. Component Placement uye Oriental

Kuisa zvine hungwaru zvinhu zvine simba-akakwirira munzvimbo dzinopa yakanyanya kubviswa kupisa kwakakosha. Izvi zvinosanganisira kudzivirira mipendero yebhodhi kunze kwekunge singi yekupisa yakashandiswa uye kugovera zvikamu kudzivirira nzvimbo dzinopisa. Sensitive components zvinofanirwa kunge zviri munzvimbo dzinotonhorera dzePCB.

4. Kupisa Mapaipi

Kunyanya anobatsira mune yakakwirira-tembiricha maapplication, kupisa pombi dzinoendesa kupisa zvakanaka uye dzinowanzoiswa muPCBs. Iwo anowanzo aine mvura inoshanda inotora kupisa uye kunyungudika, ichiendesa kupisa kure kusati kwadzoreredzwa zvakare kuita mvura.

5. Integrated Cooling Nzira

Nzira itsva dzakabatanidzwa dzekutonhodza dzinosanganisira kufuridza mumiririri wekutonhodza kuburikidza neaya yakatsaurwa yakananga kuzasi kwezvinhu zvinogadzira kupisa. Iyi tekinoroji inoshanda kupfuura yechinyakare heatsink uye fan setups.

6. Kushandisa Thermal Grease, Adhesives, kana Pads

Zvishandiso izvi zvinopa iyo thermally conductive nzira kubva kuzvikamu kuenda kune heatsinks kana zvimwe zvinopisa-zvinopisa zvishandiso, zvinosimudzira kupisa conduction kunyatsoshanda.

7. Kusarudza Zvinhu

Kusarudza substrate yakakodzera uye zvinhu zve laminate kwakakosha. Zvinhu zvakaita semhangura, inozivikanwa nekugona kupisa zvakanaka, zvinobatsira kuparadzira kupisa. MaPCB esimbi ( MCPCB ) anosanganisa zvinhu zvakasiyana zve substrate nesimbi kuti kupisa kupararire zvakanyanya.

8. DC Power Integrity Simulations

Kushandisa masimulation kuona hotspots muPower Distribution Network (PDN) inobatsira mukugadzirisazve matunhu ane yakakwira density yazvino kuderedza tembiricha.

9. Exotic Substrate Materials

Ceramic uye metallic substrates, inozivikanwa nepamusoro yekupisa conductivity kupfuura FR4, inoshandiswa kune yakawedzera yunifomu yekugovera tembiricha uye kubviswa kweanopisa hotspots.

10. Pad Design

Kukwenenzvera padhi dhizaini, kusanganisira ukobvu uye kufukidzwa, kwakakosha pakupararira kwekupisa uye kuendesa kune heatsinks.

11. PCB Hukobvu

MaPCB akakora ane nzvimbo dzakakura dzepamusoro anogona kubvisa kupisa zvakanyanya. Iyo thermal conductivity uye CTE yezvinhu zvinoshandiswa inoita basa rakakosha mukutonga kwekupisa.

12. Thermal Analysis Tools

Kushandisa maturusi ekuongorora ekupisa, kuongorora kwekuona, uye infrared makamera anobatsira kuona zvinogona kuitika mukupisa uye kuronga nzira dzakakodzera dzekubvisa kupisa.

Muchidimbu, PCB yekudziya kwekutonga inzvimbo ine mativi mazhinji inoda kungwarira chiyero chekufunga kwekugadzira, kusarudzwa kwezvinhu, uye hunyanzvi hwekutonhodza. Sezvo zvemagetsi zvichiramba zvichishanduka, ndizvo zvichaitawo mazano ekuvachengeta vachitonhorera, kuona kuti zvishandiso zvemangwana zvinogona kushanda pakakwirira pasina njodzi yekupisa.