Ngenxa yokutshintsha iimpawu zokutshintsha kwamandla, kulula ukubangela ukuba amandla okuhambisa amandla ukuvelisa uphazamiseko lwe-Electromagnetic. Njengenjineli yokubonelela ngamandla, injineli ye-elektromagnetic, okanye injineli yobeko lwe-PCB, kufuneka uziqonde izizathu ze-elektromagnetic kwaye usebenzise amanyathelo asombululwe, ngakumbi iinjineli zoyilo kufuneka azi ukuba kukuthintela njani ukwanda kweendawo ezimdaka. Eli nqaku lizisa iingongoma eziphambili zePCB yePCB.
1. Iqela elisisiseko: Nasiphi na intambo icinezelekile; okwangoku ukukhetha ngokuzenzekelayo indlela enomqobo omncinci; Ubunzulu be-radiation inxulumene ne-frequency yangoku, i-frequency, neloop; Ukuphazamiseka kwemo exhaphakileyo kunxulumene nokuxhotyiswa okufanayo kwezinto ezinkulu ze-DV / DT imiqondiso yomhlaba; Umgaqo wokunciphisa i-EMI kunye nokukhulisa ubuchule bokuphazamiseka.
2. Ubume kufuneka bunxeswe ngokwenziwa ngamandla, i-analog, yedijithali yedijithali kunye nebhloko nganye esebenzayo.
3. Nciphisa indawo yendawo enkulu ye-di / dt lop kwaye unciphise ubude (okanye indawo, ububanzi bomgca omkhulu we-DV / DT). Ukunyuka kwendawo yomkhondo kuya kwandisa amandla okusasazwa. Inkqubo eqhelekileyo yile: Ububanzi be-trace bazama ukuba bukhulu ngokusemandleni, kodwa basusa inxenye egqithisileyo), kwaye bazame ukuhamba kumgca othe ngqo wokunciphisa indawo efihliweyo ukunciphisa indawo efihliweyo ukunciphisa indawo efihliweyo ukunciphisa indawo efihliweyo ukunciphisa indawo efihliweyo ukunciphisa indawo efihliweyo ukunciphisa indawo efihliweyo ukunciphisa indawo efihliweyo ukunciphisa indawo efihliweyo ukunciphisa indawo efihliweyo ukunciphisa indawo efihliweyo ukunciphisa indawo efihliweyo ukunciphisa indawo efihliweyo ukunciphisa indawo efihliweyo ukunciphisa indawo efihliweyo ukunciphisa indawo efihliweyo ukunciphisa indawo efihliweyo ukunciphisa indawo efihliweyo ukunciphisa indawo efihliweyo ukunciphisa indawo efihliweyo ukunciphisa indawo efihliweyo ukunciphisa indawo efihliweyo ukunciphisa indawo efihliweyo ukunciphisa indawo efihliweyo ukunciphisa indawo efihliweyo ukunciphisa indawo efihliweyo ukunciphisa indawo efihliweyo ukunciphisa indawo efihliweyo ukunciphisa indawo efihliweyo ukunciphisa indawo efihliweyo ukunciphisa indawo efihliweyo ukunciphisa indawo efihliweyo ukunciphisa indawo efihliweyo ukunciphisa indawo efihliweyo ukuze inciphise i-radiation.
I-4. I-Crostalk ye-Crostalk ibangelwa yi-di / dt ye-intenna ye-dt (i-lop eriyali), kwaye kubaluleke kakhulu ukunciphisa indawo yokuhamba, oko kukuthi eyona nto iphambili kukunciphisa umgama); I-crosstalk iveliswa ikakhulu ziimpawu ezinkulu ze-DV / DT, kunye nobunzulu bokuqikelela buhambelana nokungabinamsebenzi. Zonke izinto ezibonakalayo ezinolu phawu zincitshisiwe (eyona ndlela iphambili kukunciphisa indawo esebenzayo yokudibanisa kwaye unyuse umgama. Ukukhawuleza kokunyuka kakhulu.
5. Zama ukusebenzisa umgaqo-nkqubo wokucinywa kwe-LOP ukuze unciphise indawo yendawo enkulu ye-di / dt lop, njengoko kubonisiwe kumzobo 1 (ofanayo nesibini esijijekileyo
Sebenzisa umgaqo-nkqubo wokucinywa kwe-LOP ukuphucula ubuchule bokuphazamiseka kwaye bandise umgama ohambisayo):
Umzobo 1, ukurhoxiswa kwe-LOP (i-FreeWheel Log yesekethe)
6. Ukunciphisa indawo yeloop akuyiphumi nje imitha, kodwa inciphise i-coop engasebenziyo, esenza ukuba kube ngcono i-copcless ngcono.
7. Ukunciphisa indawo yeloop kufuna ukuba siyile ngokuchanekileyo indlela yokubuyela kumkhondo ngamnye.
8. Xa i-PCBs ezininzi ixhunyiwe ngeChings, kuyayimfuneko ukuthathela ingqalelo ukunciphisa indawo yokunciphisa indawo, ngakumbi imiqondiso emikhulu ye-di / dt, imiqondiso ephezulu. Kungcono ukuba ucingo olunye uphawu luhambelana nocingo lomhlaba, kwaye iingcingo zombini zikufutshane kangangoko kunokwenzeka. Ukuba kukho imfuneko, iingcingo ze-wires ejijekileyo zinokusetyenziselwa ukunxibelelana (ubude be-wire egxekwe i-wire ihambelana nenani elipheleleyo lesiqingatha sengxolo-wavelength). Ukuba uvula ityala lekhompyuter, uyakubona ukuba i-USB inxibelelaniso phakathi kwebhodi yamalungu kunye nephaneli yangaphambili iqhagamshelwe kwisibini esijijekileyo, esibonisa ukubaluleka koqhagamshelo lwe-anting kunye nokunciphisa imitha.
9. Kwintambo yedatha, zama ukucwangcisa iingcingo zomhlaba kwintambo, kwaye wenze ukuba lo mbhobho wasasazwa ngokulinganayo kwintambo, enokuthi inciphise indawo yelophe.
10. Nangona eminye imiqondiso yebhodi ephantsi, kuba le miqondiso iphindaphindiweyo iqulethe ingxolo enkulu (ngokuhamba kunye nemisebenzi yemitha), kulula ukuba ingalawulwa kakuhle.
11. Xa i-piriiring, kuqala ithathele ingqalelo umkhondo omkhulu wangoku kunye nendlela ethatyathwayo kwimitha.
I-12. Ukutshintsha izinto zokuhambisa amandla zihlala zine-4 yangoku: Igalelo, ukukhupha, ukutshintshela, ukutshintsha kwe-freewing, (umzobo 2). Phakathi kwawo, igalelo kunye nemveliso yangoku yangoku iphantse yaya kuthi ga ngoku, phantse ayikho, kodwa iphazanyiswe ngokulula; Ukutshintshela kunye nokuthambisa i-leaps ezikhoyo kune-di / dt, efuna ingqalelo.
Umzobo 2, ilokhwe yangoku yesekethe ye-Buck
13. Isango lepakethe yeSango le-MOS (IGBT) ityhubhu ihlala inayo i-di / dt enkulu.
14. Musa ukubeka imijikelezo emincinci yomqondiso, njengeesekethe kunye ne-alog isekethe, ngaphakathi, irejista ephezulu kunye nesekethe ephezulu yokuphepha ukuphazamiseka.
Iza kuqhubeka…..
