Hukama pakati pePCB jira ndiro uye EMC
Nhungamiro: Kutaura nezvekuoma kwekuchinja magetsi, dambudziko rePCB jira ndiro harina kunyanya kuoma, asi kana iwe uchida kugadzirisa bhodhi rakanaka rePCB, magetsi ekushandura anofanira kunge ari imwe yematambudziko (PCB design haina kunaka, izvo zvinogona kukonzera zvisinei kuti iwe unogadzirisa sei dhizaini Maparameter ari kukanganisa jira.Izvi hazvisi alarmist), nekuti pane zvinhu zvakawanda zvinofunga PCB machira emapuranga, akadai semagetsi ekushanda, nzira yekugadzira, kuchengetedza zvinodiwa, EMC mhedzisiro, nezvimwe. Pakati pezvinhu, magetsi ndiwo akanyanya kukosha, asi EMC ndiyo yakanyanya kuoma kubata.Kufambira mberi kwemapurojekiti mazhinji idambudziko reEMC.Ichi chinyorwa chichagovana newe hukama pakati pePCB jira bhodhi uye EMC kubva 22 nzira.
- Dunhu rakabikwa rinogona kuita zvakadzikama EMI yedunhu rePCB dhizaini
Kukanganisa kwedunhu riri pamusoro paEMC kunogona kufungidzirwa.Masefa ekupedzisira ekuisa ari pano;the pressure-proof anti-strikes;iyo yekupokana R102 yekukanganisa ikozvino (ine relay kuderedza kurasikirwa);Iyo Y capacitor iyo inosefa nekusefa;iyo fuse inobata bhodhi rekuchengetedza bhodhi;mudziyo wese pano wakakosha zvikuru.Izvo zvinodiwa kuti unyatso kuravira mabasa uye mabasa ega ega mudziyo.Kana iyo dhizaini yedhizaini yagadzirwa, iyo EMC yakaoma nhanho yakadzikama uye yakadzikama dhizaini, sekuisa akati wandei mazinga ekusefa, nhamba uye nzvimbo yehuwandu hweY capacitors.Sarudzo yemagetsi senitivity saizi ine hukama nekuda kwedu kweEMC.Gamuchira munhu wese kuti akurukure anoita seakapusa EMI maseketi echikamu chimwe nechimwe.
- 2.Circuit uye EMC: (Iyo inonyanya kuzivikanwa anti-gravity topology, ona kuti ndedzipi nzvimbo dzakakosha mudunhu dzine maitiro eEMC)
Zvikamu zvishoma zvedunhu mumufananidzo uri pamusoro: kukanganisa paEMC kwakakosha (ona kuti chikamu chegirinhi hachizi).Semuyenzaniso, munhu wese anoziva kuti mwaranzi wemagetsi emumunda mwaranzi inzvimbo, asi musimboti weiyo shanduko yemagineti flux., Ndiko kuti, denderedzwa remhete rinoenderana mudunhu.
Ikozvino inogona kubudisa magnetic field, iyo inobereka mhepo yakagadzikana uye haigoni kuchinjwa kumagetsi emagetsi.Munda wemagetsi unogona kubudisa magnetic field.Saka ive shuwa yekuteerera kune idzo nzvimbo nekuchinja chimiro, ndiko kuti, imwe yemabviro eEMC.Heino imwe yemabviro eEMC (imwe yacho pano, hongu, pachave nezvimwe zvinhu gare gare), senge ine dotted mutsara wedunhu mudunhu, inova iyo yekuvhurwa kwechubhu yekuchinja kuvhura chubhu.Iyo turbine yedunhu yakavharwa kwete chete inogona kuchinjika kumhanya kweiyo switch inogona kugadzirisa maitiro paEMC, asi nharaunda yejira routing wedunhu inewo yakakosha kukanganisa!Zvimwe zvishwe zviviri zviri kutora mhete uye rectifier wedunhu, tanga wanzwisisa pachine nguva, wozotaura nezvazvo gare gare.
- Chechitatu, kushamwaridzana pakati pePCB dhizaini neEMC
1. Kukanganisa kwePCB loop paEMC kwakakosha zvikuru.Semuenzaniso, anti-main simba mhete yedunhu, kana yakakura kwazvo, mwaranzi ichave yakashata.
2. Iyo sefa wiring effect, iyo sefa inoshandiswa kusefa kupindira, asi kana PCB ine wiring yakaipa, sefa inogona kurasikirwa nemhedzisiro.
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4. Chikamu chinonzwisiswa chiri pedyo zvakanyanya nekwakabva kupindira.Semuyenzaniso, EMI dunhu riri pedyo chinja chubhu, izvo zvisingadzivisiki kutungamirira murombo EMC uye vanoda yakajeka kuzviparadzanisa nzvimbo.
5. RC tora dunhu.
6. Y capacitor yakadzika pasi uye wiring, uye nzvimbo yeY capacitor inokoshawo.
Ngatipei muenzaniso mudiki pazasi:
Sezvinoratidzwa mumufananidzo uri pamusoro apa, X -capacitor pin routing inogadziriswa mukati.Iwe unogona kudzidza kugadzira iyo capacitor pink ride plug -in (uchishandisa extrusion ikozvino).Nenzira iyi, kusefa kweiyo X capacitor inogona kuwana yakanakisa mamiriro.
- 4. Kugadzirira kwePCB dhizaini: (Kugadzirira kwakaringana, dhizaini chete inogona kugadzirwa nhanho nhanho kudzivirira dhizaini kuputika)
Pane zvimwe zvikamu zvezvinhu zvinotevera.Inofungidzirwa kuti nzira yekugadzira ichafungidzirwa.Zvese zvirimo hazvina chekuita nemamwe matutorials.Ingori pfupiso yezvakaitika zvayo pachayo.
1. Kukura kwechimiro chechimiro, kusanganisira maburi ekumisa, kuyerera kwemhepo, kupinza uye kuburitsa zvigadziko, iwe unofanirwa kuenzanisa hurongwa hwevatengi, uye iwe unofanirwawo kutaurirana nemutengi, iyo inogumira kumusoro.
2. Chengetedzo certification, ndeupi rudzi rwehuchokwadi hwechigadzirwa, idzo nzvimbo dzinoita yekutanga kuvharira uye kukwira kureba, uye kupi kwekusimbisa kuvharirwa uye kusiya slot.
3. Packaging design: Pane here nguva yakakosha, yakadai seyakagadzirirwa zvikamu zvekurongedza kurongedza.
4. Kusarudzwa kwenzira dzemaitiro: single -panel double panel kusarudzwa, kana multi-layer board, kuongorora kwakazara maererano nedhiyabhorosi dhiyagiramu uye bhodhi saizi, mutengo uye kumwe kuongorora kwakazara.
5. Zvimwe zvakakosha zvinodiwa kune vatengi.
Unyanzvi hwekugadzira huchava hunyoro.Mitemo yekuchengeteka ichiri yakagadziriswa.Ndeapi macertification anoita, uye ndeapi mazinga ekuchengetedza, hongu, kune zvakare mimwe mitemo yekuchengetedza iyo yakajairika mune akawanda zviyero, asi kune zvakare zvimwe zvakakosha zvigadzirwa senge kurapwa.
Kuti kuve kupenya, shamwari dzeiyo nyowani yekupinda-level mainjiniya haisi kupenya.Heano zvimwe zvigadzirwa zvakajairika zvinowanzoitika.Inotevera ndiyo chaiyo jira bhodhi zvinodiwa zvakapfupikiswa neIEC60065.Muchifunga nezvemitemo yekuchengetedza, iwe unofanirwa kugara uchifunga.Paunosangana nezvakagadzirwa, unofanirwa kubata nazvo:
1. Chinhambwe chemafiyusi ekuisa pads chikuru kupfuura 3.0mm.Iyo chaiyo jira ndiro iri pa 3.5mm (kungokwira simba kukwira kureba pa 3.5mm pamberi fiyuzi, uye ipapo kukwira simba pa 3.0mm).
2. Mitemo yekuchengetedza isati yasvika uye mushure mekugadzirisa bhiriji inofanirwa kuva 2.0mm, uye ndiro yejira ndeye 2.5mm.
3. Mushure mekugadzirisa, mitemo yekuchengetedza kazhinji haidi zvinodiwa, asi nzvimbo yakakwirira uye yakaderera yemagetsi inosara maererano nemhepo chaiyo, uye tsika ye400V inopfuura 2.0mm.
4. Mitemo yekuchengetedzwa kwechikamu chekutanga ndeye 6.4mm (getsi remagetsi), uye kureba kwekukwira kunonyanya kuenderana ne7.6mm (chinyorwa: izvi zvakabatana neiyo chaiyo yekupinza voltage. bvumira) .
5. Shandisa nzvimbo dzinotonhora muchikamu chekutanga uye uzviratidze zvakajeka;L, N chitupa, kuisa AC Input logo, fuse yambiro logo, zvichingodaro zvese zvinoda kuiswa pachena.
Munhu wese ane kusahadzika pamusoro pezviri pamusoro, anogonawo kukurukura uye kudzidza kubva kune mumwe nemumwe.
Zvekare, iyo chaiyo chengetedzo chinhambwe chakabatana neiyo chaiyo yekuisa voltage uye nharaunda yekushanda.Iyo chaiyo kuverenga kwetafura inodiwa.Iyo data inopihwa yekunongedza chete uye zviitiko chaizvo zviri pasi pezviitiko chaizvo.
- 5. PCB dhizaini kuchengetedza mitemo funga zvimwe zvinhu
1. Nzwisisa kuti ndeupi huchokwadi hwezvigadzirwa zvako, ndezvipi zvezvigadzirwa, zvakadai sekurapa, kutaurirana, magetsi, TV, nezvimwewo, asi kune nzvimbo dzakawanda dzakafanana.
2. Nzvimbo iyo chengetedzo iri padyo nePCB jira bhodhi, nzwisisa maitiro ekudzivirira, ayo ari ekutanga ekudzivirira, ayo anokwidziridzwa kuvharisa, uye akasiyana mwero ekudzivirira madaro akasiyana.Zvakanakisisa kutarisa chiyero, uye kureba kwemagetsi kunoverengwa uye kureba kunokwira.
3. Tarisa pane chengetedzo mudziyo wechigadzirwa, sehukama pakati petransformer magnetism uye yepakutanga mutevedzeri wemuganhu.
4. Kupisa kunyura uye kureba kwepakati, nyika yakabatanidzwa kune radiator yakasiyana, nyika haina kufanana, pasi ichiri kutonhora, uye kupisa kwepasi kwakafanana.
5. Kunyanya kutarisisa kureba kweinishuwarenzi, nzvimbo yakasimba inodiwa.Nhambwe iri pakati pefuse inowirirana.
6. Y capacitor uye leakage ikozvino, taura nehukama huripo.
Iyo yekutevera inotsanangura nzira yekuchengetedza chinhambwe uye maitiro ekuita zvekuchengetedza zvinodiwa.
- 6. Simba dhizaini yePCB dhizaini
1. Kutanga, kuyera ukuru hwePCB ukuru uye nhamba yezvishandiso, kuitira kuti ive dense, kana zvisina kudaro yakasimba, uye zvakaoma kuona chidimbu che sparseness.
2. Shandura dunhu, uchitarisa pamichina yepakati, uye musimboti wechinhu kiyi yekuisa mudziyo panguva imwe chete.
3. Mudziyo wacho wakamira kana kuti wakatwasuka.Imwe yakanaka, uye imwe ndeyekufambisa plug-in mashandiro.Mamiriro ezvinhu anokosha anogona kufungwa.
4. Paunenge uchigadzirisa, unofanirwa kufunga nezve wiring uye uiise munzvimbo inonzwisisika uye fambisa mutsara wekutevera.
5. Panguva yekugadzira, nzvimbo yemhete inoderedzwa zvakanyanya sezvinobvira, uye migwagwa mikuru mina yemhete ichatsanangurwa zvakadzama.
Kuti uwane mapoinzi ari pamusoro, hongu, zvinodikanwa kuti uishandise zvakasununguka, uye iyo inonzwisisika marongero ichakurumidza kuberekwa.
Inotevera PCB bhodhi, iyo inofanirwa kudzidza kubva kune yakajairika marongero:
Kuwanda kwesimba kwechifananidzo ichi kuchiri kwakakwirira.Pakati pavo, chikamu chekutonga cheLLC, chikamu chekubatsira, uye BUCK circuit drive (yakakwirira-simba yakawanda-nzira inobuda) iri pabhodhi duku.
1. Mamiriro ekupinza uye anobuda akagadziriswa uye akafa.Haikwanise kufamba.Bhodhi racho rine rectangular.Nzira yekusarudza sei simba guru rekuyerera?Pano, kubva pasi kusvika kumusoro, kubva kuruboshwe uye kurudyi kusvika kune marongerwo, kupisa kupisa kunoenderana nehoko.
2. Dunhu reEMI richiri pachena.Izvi zvakakosha zvikuru.Kana ikavhiringika, hazvina kunaka kune EMC.
3. Chinzvimbo chemahombe capacitor chinofanirwa kuverengerwa PFC loop uye main power loop ye LLC.
4. Ikozvino yemupendero wekubatsira yakakura.Kuti utore ikozvino uye kupisa kwekupisa kwepombi yekugadziridza, iyi marongerwo inogamuchirwa.Iyo pombi inogadzirisa iri pamusoro.just.
Bhodhi rimwe nerimwe rine maitiro aro, uye zvechokwadi rine matambudziko aro.Nzira yekuigadzirisa zvine musoro ndiyo kiyi.Unogona here kunzwisisa zvinorehwa nekusarudzwa kwakanaka kwemarongerwo?
- 7. PCB muenzaniso kuonga
Zvinoenderana nePCB marongerwo eiyo PCB yakambokurukurwa marongerwo, tarisa bhodhi iri, kana riri panzvimbo, ndinofunga inzvimbo iri nani.Chokwadi, zvikanganiso zvichagara zviripo.Unogonawo kuzvikurudzira.Hazvisi nyore, unogona kudzidza kubva pabhodhi iri!Gare gare, iwe unozotsanangurawo nekudzidza bhodhi iri.Ngatitangei kutenda.
- 8. Migwagwa mikuru mina yemhete yePCB dhizaini (chinodiwa chikuru chePCB marongerwo inzvimbo diki yemasekete mana makuru emhete)
Pamusoro pezvo, mhete yekunyudza (RCD absorption uye RC kutorwa kweMOS chubhu, RC kutorwa kwepombi dzekugadzirisa) yakakoshawo zvakanyanya, uye zvakare loop inoburitsa yakakwira -frequency radiation.Kana muine mibvunzo iri pamusoro, munobvumirwa kuikurukura.Chero bedzi ichibvunzwa nemibvunzo, kukurukura kudzidza pamwe chete kunogona kuita fambiro mberi huru!
