Ngalo naluphi na uyilo lokuhambisa umbane, uyilo lomzimba we Ibhodi PCB likhonkco lokugqibela. Ukuba indlela yoyilo ayifanelekanga, iPCB inokukhupha uphazamiseko oluninzi kakhulu lwe-electromagnetic kwaye ibangele unikezelo lwamandla lusebenze lungazinzanga. Oku kulandelayo yimibandela efuna ingqalelo kucazululo lwenyathelo ngalinye.

1. Ukuhamba koyilo ukusuka kwisikimu ukuya kwi-PCB

Misela iiparameters zecandelo-“input principle netlist -” design parameter setting-“manual layout-“manual wiring -” verification design-“review -” CAM output.

2. Ukumiselwa kweparameter

Umgama phakathi kweengcingo ezikufutshane kufuneka ukwazi ukuhlangabezana neemfuno zokhuseleko lombane, kwaye ukwenzela ukuba kube lula ukusebenza kunye nokuveliswa, umgama kufuneka ube mkhulu kangangoko kunokwenzeka. Ubuncinci bezithuba kufuneka bufaneleke ubuncinci ukuthwala

I-Voltage

Xa ubuninzi be-wiring buphantsi, isithuba semigca yesignali sinokunyuswa ngokufanelekileyo. Kwimigca yemiqondiso enamanqanaba aphezulu naphantsi, izithuba kufuneka zibe mfutshane kangangoko kwaye izithuba zandiswe. Ngokubanzi, izithuba zeengcingo zisetelwe kwi-8mil. Umgama phakathi komda womngxuma wangaphakathi wepadi kunye nomda webhodi eprintiweyo kufuneka ube mkhulu kune-1mm, enokuphepha iziphene zepadi ngexesha lokucubungula. Xa umkhondo oxhunywe kwiipads zincinci, ukudibanisa phakathi kweepads kunye neetrayisi kufuneka kuqulunqwe kwimilo yokulahla. Inzuzo yale nto kukuba iipads azilula ukukhupha, kodwa umkhondo kunye neepads azinqanyulwa ngokulula.

3. Uyilo lwecandelo

Ukuziqhelanisa kubonakalise ukuba nkqu

Isiphaluka

Uyilo lweskimu luchanekile, kwaye ibhodi yesekethe eprintiweyo ayilwanga ngokufanelekileyo.

ngekhompyutha

Ukuthembeka kwesixhobo kuchaphazeleka kakubi. Umzekelo, ukuba iilayini ezimbini ezibhityileyo ezinxuseneyo zebhodi eprintiweyo zisondelelene, umqondiso wamaza wophawu uya kulibaziseka kwaye ingxolo ebonakalisiweyo iya kwenziwa kwi-terminal yomgca wothumelo. Ukusebenza kuyehla, ngoko xa uyila ibhodi yesekethe eprintiweyo, kufuneka ubeke ingqalelo ekuthatheni indlela echanekileyo. Umbane ngamnye wokutshintsha unemisinga emine

Isango:

Ukutshintsha amandla isekethe ye-AC

Isilungisi semveliso sesekethe ye-AC

Igalelo lesiginali yomthombo wangoku

Umthwalo wemveliso yangoku loop iluphu

Dlula malunga ne-DC yangoku kwigalelo

capacitance

Ukutshaja, i-capacitor yokucoca isebenza ikakhulu njengogcino lwamandla ebroadband; ngokufanayo, imveliso yokucoca i-capacitor ikwasetyenziselwa ukugcina amandla aphezulu-frequency ukusuka kwisilungisi semveliso kwaye ngaxeshanye isuse amandla eDC weluphu yomthwalo wemveliso. Ngoko ke, ii-terminals ze-input and output filter capacitors zibaluleke kakhulu. Igalelo kunye nemveliso yelophu yangoku kufuneka idityaniswe kuphela kunikezelo lwamandla ukusuka kwiitheminali ze-capacitor yokucoca ngokulandelelanayo; ukuba uxhulumaniso phakathi kwe-input / loop ye-output kunye ne-loop yamandla / i-loop ye-rectifier ayinakuxhunywa kwi-capacitor I-terminal ixhunyiwe ngokuthe ngqo, kwaye amandla e-AC aya kuthuthwa kwindalo ngegalelo okanye i-capacitor filter capacitor.

Isekethe ye-AC yokutshintsha kwamandla kunye nesekethe ye-AC ye-rectifier iqulethe i-high-amplitude trapezoidal currents. Amacandelo e-harmonic ale misinga aphezulu kakhulu. I-frequency inkulu kakhulu kunesiqhelo esisisiseko sokutshintsha. Incopho ye-amplitude ingaba phezulu ngokuphindwe ka-5 i-amplitude yegalelo eliqhubekayo / imveliso ye-DC yangoku. Ixesha lenguqu lidla ngokuba malunga nama-50ns. Ezi lophu zimbini zezona ziqhelene kakhulu nokuphazamiseka kombane, ngoko ke ezi lophu ze-AC kufuneka zibekwe phambi kweminye imigca eprintiweyo kubonelelo lwamandla. Amacandelo amathathu aphambili kwiluphu nganye zizihluzi ze-capacitors, iiswitshi zamandla okanye izilungisi,

inductance

transformer

Kufuneka ibekwe ecaleni komnye nomnye, lungisa indawo yamacandelo ukwenza indlela yangoku phakathi kwabo ibe mfutshane kangangoko.

Eyona ndlela ilungileyo yokuseka i-layout yonikezelo lwamandla yokutshintsha iyafana noyilo lombane. Eyona nkqubo yoyilo yile ilandelayo:

1. Beka i-transformer

2. Yila i-loop yangoku yokutshintsha amandla

3. Yila i-loop yangoku yokubuyisela imveliso

4. Ulawulo lwesekethe eqhagamshelwe kwisekethe yamandla e-AC

Yila igalelo lomthombo wangoku loop kunye negalelo

isihluzo

Xa uyila i-loop yomthwalo wemveliso kunye nesihluzo semveliso ngokweyunithi esebenzayo yesekethe, xa ubeka onke amacandelo esekethe, le migaqo ilandelayo kufuneka ihlangane:

Into yokuqala ekufuneka uyiqwalasele bubungakanani bePCB. Xa ubukhulu bePCB bukhulu kakhulu, imigca eprintiweyo iya kuba yinde, i-impedance iya kwanda, amandla okulwa nengxolo aya kuncipha, kwaye iindleko ziya kwanda; ukuba ubungakanani bePCB buncinci kakhulu, ukuchithwa kobushushu akuyi kuba kuhle, kwaye imigca ekufutshane iya kuphazamiseka ngokulula. Ubume obugqwesileyo bebhodi yesekethe luxande, kunye ne-aspect ratio ye-3: 2 okanye 4: 3. Amacandelo abekwe kumda webhodi yesekethe ngokuqhelekileyo ayikho ngaphantsi kwe-2mm kude nomda webhodi yesiphaluka. Xa ubeka amacandelo, qwalasela i-soldering yexesha elizayo, ingabi nzima kakhulu Thatha icandelo eliphambili lesekethe nganye esebenzayo njengeziko kwaye ubeke ngeenxa zonke. Amacandelo kufuneka alungelelaniswe, ngokucocekileyo kwaye alungelelaniswe kwi-PCB, ukunciphisa kunye nokunciphisa izikhokelo kunye nokudibanisa phakathi kwamacandelo, kunye ne-decoupling capacitor kufuneka isondele kangangoko kunokwenzeka kwi-VCC yesixhobo. Iisekethe ezisebenza kwiifrikhwensi eziphezulu kufuneka ziqwalasele amacandelo. Iiparamitha zonikezelo. Ngokuqhelekileyo, isekethe kufuneka icwangciswe ngokuhambelana kangangoko kunokwenzeka. Ngale ndlela, akukuhle kuphela, kodwa kulula ukuyifaka kunye ne-solder, kwaye kulula ukuvelisa ubuninzi. Lungiselela indawo yeyunithi yesiphaluka nganye esebenzayo ngokuhambelana nokuhamba kweesekethe, ukwenzela ukuba i-layout ilungele ukuhamba komqondiso, kwaye umqondiso uhambelana ngokusemandleni. Umgaqo wokuqala woyilo kukuqinisekisa i-wiring ye-wiring. Nikelani ingqalelo kuqhagamshelo lwezikhokelo ezibhabhayo xa uhambisa isixhobo, kwaye ubeke izixhobo ezidityanisiweyo kunye ukunciphisa indawo yelophu kangangoko kunokwenzeka ukucinezela uphazamiseko lwemitha yonikezelo lombane lokutshintsha.

4. Iingcingo

Ukunikezelwa kombane okutshintshayo kuqulethe izibonakaliso eziphezulu ze-frequency. Nawuphi na umgca oshicilelweyo kwi-PCB unokusebenza njenge-eriyali. Ubude kunye nobubanzi bomgca oshicilelweyo buya kuchaphazela i-impedance kunye ne-inductance, ngaloo ndlela kuchaphazela ukuphendula rhoqo. Kwanemigca eprintiweyo egqithisa iisignali zeDC inokudibanisa kwiisignali zamaza kanomathotholo ukusuka kwimigca eprintiweyo ekufutshane kwaye ibangele iingxaki zesekethe (kwanokukhupha imiqondiso yophazamiseko kwakhona). Ngoko ke, zonke iilayini eziprintiweyo ezidlula i-AC current kufuneka ziyilwe ukuba zibe mfutshane kwaye zibe banzi kangangoko kunokwenzeka, oku kuthetha ukuba onke amacandelo aqhagamshelwe kwimigca eprintiweyo kunye nezinye iintambo zombane kufuneka zibekwe kufutshane kakhulu.

Ubude bomgca oshicilelweyo buhambelana ne-inductance kunye ne-impedance, kwaye ububanzi buhambelana ngokungafaniyo ne-inductance kunye ne-impedance yomgca oshicilelweyo. Ubude bubonisa ubude bempendulo yomgca oshicilelweyo. Okukhona ubude bubude, kokukhona kusezantsi i-frequency apho umgca oshicilelweyo unokuthumela kwaye ufumane amaza e-electromagnetic, kwaye unokukhupha amandla amaninzi kanomathotholo. Ngokobungakanani bebhodi yesekethe eprintiweyo yangoku, zama ukwandisa ububanzi bomgca wamandla ukunciphisa ukuxhathisa i-loop. Ngexesha elifanayo, yenza isalathiso somgca wamandla kunye nomgca womhlaba uhambelana nolwalathiso lwangoku, olunceda ukunyusa amandla okuchasana nengxolo. I-Grounding yisebe elisezantsi le-loops ezine zangoku zokunikezelwa kwamandla okutshintsha. Idlala indima ebalulekileyo njengendawo eqhelekileyo yokubhekisela kwisekethe, kwaye yindlela ebalulekileyo yokulawula ukuphazamiseka. Ngoko ke, ukubekwa kocingo lokumisa kufuneka kuqwalaselwe ngokucophelela kwi-layout. Ukudibanisa iziseko ezahlukeneyo kuya kubangela ukusebenza kombane ongazinzanga.