Uyilo PCB

Ngalo naluphi na uyilo lokuhambisa umbane, uyilo lomzimba we Ibhodi PCB Likhonkco lokugqibela. Ukuba indlela yoyilo ingalunganga, i-PCB inokukhupha ukuphazamiseka okubangelwa ngumbane, nto leyo ikhokelela emsebenzini wokungazinzi kombane. Oku kulandelayo luhlalutyo lwemicimbi efunekayo yokujonga inyathelo ngalinye.

Ukusuka kumzobo weskim ukuya kwinkqubo yoyilo lwe-PCB

Set up component parameters – > Input siseko netlist -> Ukucwangciswa kweparameter yoyilo -> Uyilo lwemanyuwali -> Ukwenza ikhabhathi ngesandla -> Qinisekisa uyilo-> Uphengululo – & gt; Iziphumo zeCAM.

Useto lweparameter

Isithuba phakathi kweengcingo ezikufutshane kufuneka sihlangabezane neemfuno zokhuseleko lombane, kwaye ukulungiselela ukusebenza kunye nemveliso, isithuba kufuneka sibanzi kangangoko kunokwenzeka. The minimum spacing should be suitable for the voltage at least. When the wiring density is low, the spacing of signal lines can be appropriately increased. For the signal lines with high and low level disparity, the spacing should be as short as possible and the spacing should be increased.

Umgama phakathi komphetho womngxuma wangaphakathi wephedi kunye nomda webhodi eprintiweyo kufuneka ube mkhulu kune-1mm ukunqanda iziphene zephedi ngexesha lokuchwetheza. Xa ucingo oludityaniswe nephedi lucekeceke, unxibelelwano phakathi kwephedi kunye nocingo luyilelwe kwimeko yokuhla. Uncedo kukuba iphedi akukho lula ukuyicola, kodwa ucingo kunye nephedi akukho lula ukunqamla.

Component layout

Practice has proved that even if the circuit schematic design is correct and the printed circuit board design is improper, the reliability of electronic equipment will be adversely affected.

For example, if two thin parallel lines of a printed board are close together, there will be a delay in the signal waveform, resulting in reflected noise at the end of the transmission line. Ukuphazamiseka okubangelwa kukunikezelwa kwamandla kunye nocingo lomhlaba kuya kuyithoba intsebenzo yemveliso. Ke ngoko, xa kuyilwa ibhodi yesekethe eprintiweyo, kufuneka kuthathelwe ingqalelo indlela echanekileyo.

Umbane ngamnye otshintshayo uneziphetho ezine zangoku:

① Ac circuit of power switch

Isiphumo sokulungisa i-AC yesekethe

Igalelo lesiginali yomthombo wangoku

Load Iziphumo zomthwalo wangoku we-loop yokufaka

Ngokubiza i-capacitor yegalelo nge-DC yangoku, i-filter capacitor ikakhulu idlala indima yokugcina amandla ebroadband. Kwangokunjalo, imveliso yeefilitha zokucoca zisetyenziselwa ukugcina amandla aphuma rhoqo kwisiphumo sokulungisa ngelixa ususa amandla e-dc kumthwalo wokukhupha umthwalo.

Ke ngoko, ii-terminals terminals ze-input and output filter capacitors zibaluleke kakhulu. Igalelo kunye neziphumo zeluphu lwangoku kufuneka zidityaniswe kunikezelo lwamandla kuphela kwiziphelo zeentambo zesixhobo sokucoca ulwelo ngokwahlukeneyo. Ukuba unxibelelwano phakathi kwegalelo / isekethe yokuphuma kunye neswitshi yamandla / isekethe yomlungisi ayinakunxibelelana ngqo nesiphelo se-capacitor, amandla e-ac aya kudlula kwigalelo okanye kwimveliso yeefilitha zokucoca kwaye aqaqambe kwindalo esingqongileyo.

Imijikelezo ye-ac yeswitshi sokuhambisa umbane kunye nesilungiso siqulathe imilinganiselo ephezulu ye-trapezoidal, enecandelo eliphezulu le-harmonic kunye nobuninzi obuphezulu kakhulu kunokubakho rhoqo kwiswitshi. Ukuphakama kwesilinganiselo kunokufikelela kumaxesha ama-5 okokufaka okuqhubekayo / ukuphuma kwe-dc yangoku. Ixesha lotshintsho lihlala limalunga nama-50ns.

Iisekethe ezimbini kunokwenzeka kakhulu ukuba zivelise ukuphazamiseka kwe-electromagnetic, ke kufuneka enye intambo eshicilelweyo kumthombo wamandla ilaphu phambi kwezijikelezo ze-ac, iluphu nganye izinto ezintathu eziphambili ze-filter capacitor, iswitshi yamandla okanye isilungisi, inductor okanye isiguquli masibekwe kufutshane. omnye komnye, lungelelanisa indlela yangoku phakathi kwendawo yokuma kwezinto zibenze zifutshane kangangoko.

Eyona ndlela yokuseka ubume bokunikezela ngombane iyafana noyilo lombane, eyona nkqubo yoyilo ilandelayo yile ilandelayo:

Transform Beka isiguquli

Yila iluphu yangoku yokutshintsha amandla

Yila imveliso yomlungisi ophuma ngoku

Control Isekethe yolawulo eqhagamshelwe kwisekethe yokuhambisa umbane ye-AC

wiring

Umbane oswelayo uqulethe uphawu lokuhamba rhoqo, kwaye nawuphi na umgca oprintiweyo kwi-PCB unokusebenza njenge-eriyali. Ubude kunye nobubanzi bomgca oprintiweyo kuya kuchaphazela ukunganyanzeleki kunye nokuphendula okunganyanzelekanga, oko ke kuchaphazele impendulo yokuhamba rhoqo. Nokuba imigca eprintiweyo edlula kwimiqondiso ye-dc inokudityaniswa kunye nomqondiso we-rf ukusuka kwimigca eprintiweyo ekufuphi kwaye ibangele iingxaki zesekethe (okanye iphinde iphindaphinde imiqondiso yokuphazamiseka).

Yonke imigca eprintiweyo ebaleka ngokusebenzisa i-ac yangoku kufuneka ke yenzelwe ukuba ibe mfutshane kwaye ibanzi kangangoko, oko kuthetha ukuba onke amacandelo aqhagamshelwe kwimigca eprintiweyo nakweminye imitya yombane kufuneka ibekwe kufutshane.

Ubude bomgca oprintiweyo ngokuthe ngqo bulinganisa ukunganyanzeliswa kunye nokususwa, kwaye ububanzi buyalingana ngokuchaseneyo nokungeniswa kunye nokuthintelwa komgca oprintiweyo. Ubude bubonisa ubude bempendulo yomgca oprintiweyo. Ukuba ubude bubude, isantya esisezantsi somgca oshicilelweyo ungathumela kwaye ufumane amaza ombane, kunye namandla ngakumbi e-rf anokukhupha.

Ngokobungakanani bebhodi yesekethe eprintiweyo yangoku, kangangoko kunokwenzeka ukwandisa ububanzi belayini yamandla, ukunciphisa ukuxhathisa kweluphu. Kwangelo xesha, yenza umgca wamandla, umgca womhlaba kunye nolwalathiso lwangoku oluhambelana, olunceda ukuphucula amandla okulwa nengxolo.

Ukucwangcisa isebe elisezantsi leesekethe ezine zangoku zokutshintsha umbane, edlala indima ebaluleke kakhulu njengendawo ekubhekiswa kuyo kwisekethe, kwaye yindlela ebalulekileyo yokulawula ukuphazamiseka. Ke ngoko, jonga ngononophelo iintambo zomhlaba kubeko. Ukuxuba iintambo zomhlaba kungabangela unikezelo lwamandla olungazinzanga.

khangela

Uyilo lwe-wiring lugqityiwe, kuyimfuneko ukujonga ngononophelo uyilo lwe-wiring ngabaqulunqi luhambelana nemithetho, imigaqo ngaxeshanye ikwafuna ukuqinisekisa ukuba iyahambelana na nemfuno yenkqubo yemveliso ye-PCB, umgca wokuhlola ngokubanzi ukuya kumgca, umgca kunye ne-element bonding pad, umgca kunye ne-pores yokunxibelelana, i-element bonding pad kunye ne-pores zonxibelelwano, ngomngxunya kunye nomgama phakathi komngxunya kunengqiqo, nokuba uyahlangabezana neemfuno zemveliso.

Nokuba ububanzi bentambo yombane kunye nocingo lomhlaba kufanelekile, nokuba ngaba kukho indawo yocingo lomhlaba olwandisiweyo kwi-PCB. Qaphela: Ezinye iimpazamo zinokungahoywa, umzekelo, inxenye ye-Outline yezinxibelelanisi ezithile ibekwe ngaphandle kwesakhelo sebhodi, ke kuya kuba kokuphosakeleyo ukujonga isithuba; Ukongeza, emva koguqulelo ngalunye lweengcingo kunye nomngxuma, kuya kufuneka uphinde unxibe ubhedu kube kanye.

Ukuphononongwa ngokwe “Uluhlu lokutshekisha lwe-PCB”, kubandakanya nemithetho yoyilo, inkcazo yomaleko, ububanzi bomgca, izithuba, iipads, imingxunya yemingxunya, kodwa ujonge kuphononongo lobume besixhobo, unikezelo lwamandla, iintambo zombane zomnatha, iwotshi ekhawulezayo Iingcingo zombane kunye nokukhusela

Iziphumo zoyilo

Amanqaku okuvelisa iifayile zokuzoba ukukhanya:

(1) Kufuneka ukhuphe umaleko we-wiring layer (ezantsi), umaleko wokuprinta kwescreen (kubandakanya ushicilelo oluphezulu lwesikrini, ushicilelo olusezantsi kwesikrini), umaleko wokuwelda (ukuwelda ezantsi), umaleko wokubhola (ezantsi), ukongeza ukuvelisa ifayile yokomba (NC Drill)

② Xa ucwangcisa uLaleko lweLayer yoshicilelo lwesikrini, sukukhetha uhlobo lwesahluko, khetha i-Outline, Umbhalo kunye noMgca ophezulu (ezantsi) kunye noLuhlu lokuprinta isikrini

③ Xa ucwangcisa uLwaleko ngalunye loMaleko, khetha i-Outline yeBhodi. Xa ucwangcisa uLuhlu lweLayer yoshicilelo lwesikrini, sukukhetha uhlobo lwesahluko, kwaye ukhethe i-Outline kunye neTekisi ephezulu (ezantsi) kunye noLuhlu lokushicilela isikrini.