Maitiro ekuvandudza iko kupisa kwekuvimbika kwe Pcb

Kazhinji, kugoverwa kwemhangura foil pa PCB yakaoma kwazvo uye yakaoma kunyatsoita modhi. Naizvozvo, kana uchienzanisira, zvinodikanwa kurerutsa wiring chimiro uye kuyedza kugadzira ANSYS modhi padyo kune chaiyo redunhu bhodhi. Izvo zvemagetsi zvikamu pane redunhu bhodhi zvinogona zvakare kuenzaniswa neyakareruka modelling, senge MOS machubhu, akasanganiswa wedunhu mabhuroko, nezvimwe.

Kuongorora kwekupisa mu chip kugadzira kunogona kubatsira vagadziri kuona mashandiro emagetsi ezvikamu pa Pcb redunhu bhodhi uye kana zvidimbu kana bhodhi redunhu richipisa nekuda kwekupisa kwakanyanya. Iyo yakapusa yekupisa yekuongorora inongoverenga iwo wepakati tembiricha yebhodi redunhu, uye yakaoma iyo inoda kumisikidza inopfuura modhi yemagetsi zvigadzirwa nemazhinji wedunhu mabhodhi. Kurongeka kwekutsvagisa kwekushisa pakupedzisira kunoenderana nekurongeka kwechikamu chemagetsi kushandiswa chinopihwa nedunhu bhodhi dhizaini.

Mukushandisa kwakawanda, huremu uye saizi yemuviri zvakakosha kwazvo. Kana iyo chaiyo yekushandisa simba yezvinhu iri diki kwazvo, iyo yekuchengetedza chinhu che dhizaini inogona kunge yakanyanyisa kukwirira, zvekuti wedunhu bhodhi dhizaini inotora iyo yemagetsi simba rekushandisa kukosha iyo isingawirirane neiyo chaiyo kana zvakare yakanyanyisa kuchengetedza senge hwaro hwekupisa kwekuongorora. Pane zvinopesana (uye zvakanyanyisa panguva imwe chete), iyo yekupisa yekuchengetedza chinhu dhizaini yakanyanya kuderera, ndiko kuti, iko chaiko kushanda tembiricha yezvinhu kwakakwirira kupfuura izvo zvakafanotaurwa nevanoongorora. Matambudziko akadaro anowanzo gadziriswa nekuwedzera kupisa dissipation zvishandiso kana mafeni kutonhodza redunhu bhodhi. Izvi zvekunze zvekushandisa zvinowedzera mutengo uye zvinowedzera nguva yekugadzira. Kuwedzera mafeni mune dhizaini kunounzawo zvinhu zvisina kugadzikana pakuvimbika. Naizvozvo, bhodhi redunhu rinonyanya kushandisa rinoshanda kwete nzira dzekutonhora (senge convection yechisikigo, kuitisa uye nemwaranzi).

Yakareruka redunhu bhodhi modelling

Usati wamodhizaiza, ongorora main kudziyisa madhiraivha mudunhu bhodhi, senge MOS machubhu uye akabatanidzwa wedunhu mabhuru. Izvi zvinhu zvinoshandura simba rakawanda rakarasika kuita kupisa mukati mekushanda. Naizvozvo, izvi zvishandiso zvinofanirwa kutariswa mukuenzanisira.

Uye zvakare, foil foil yakavharwa semutungamiriri pane wedunhu bhodhi substrate inofanirwa zvakare kutariswa. Ivo havangoitise magetsi chete, asiwo vanoita kupisa mune dhizaini. Iwo ekudziya ekudziya uye kupisa nzvimbo yekuchinjisa akakura. Dunhu redunhu chikamu chakakosha chemagetsi wedunhu. Chimiro chayo chinoumbwa ne epoxy resin substrate uye yemhangura foil yakavharidzirwa se conductor. Ukobvu hwe epoxy resin substrate ndeye 4mm uye ukobvu hwemhangura foil ndi 0.1mm. Iko kupisa kwekushisa kwemhangura ndeye 400W / (m ℃), nepo iyo yepoxy resin ichingova 0.276w / (m ℃). Kunyangwe iyo yakawedzeredzwa mhangura foil iri yakatetepa uye yakanaka, ine yakasimba kutungamira mhedzisiro pane kupisa, saka haigone kufuratirwa mukuenzanisira.