I-AC-DC Converter PCB Manufacturing – Ukuphepha kanye Nempumelelo Kumiklamo Enamandla Amandla

Ukukhiqiza okuthembekile kwe-AC-DC ye-PCB yokuguqulela kudinga okungaphezu kokulinganisa imithetho yokuphepha, okuhlosiwe okusebenzayo kanye nezindleko: kudinga i-geometry yokuhlukanisa enjiniyela, i-creepage ethobelanayo/ukususwa, isakhiwo esithuthukisiwe se-PFC/ngaphambili, inductance ye-loop encishisiwe, idizayini eqinile eshisayo eshisayo neyokuhlinzwa, kanye nokuqinisekiswa kwe-FCT. Ukukhiqizwa kwesilinganiso esikhulu kuwo wonke ama-SMPS omthengi kanye nezimboni kuqinisekisa lezi zici ngokuqhubekayo zinciphisa ukungqubuzana kwezitifiketi namazinga okuhluleka kwenkundla.

Uyiklama kanjani i-AC-DC Converter PCB yokuthobelana Nokuphepha

Izindinganiso zokuphepha zibonakala ziyinkimbinkimbi, kodwa izisekelo ziqondile. Kumasistimu angu-240VAC, gcina i-creepage encane engu-3mm phakathi kwamasekhethi ayinhloko kanye nesesibili. Phinda kabili lokho kwezinhlelo zokusebenza ze-PCB zemboni ye-AC-DC engu-480VAC.

Izinqamuleli ezihlulekayo ukuthola isitifiketi:

• Ukuthembela kumaski e-solder ukuze uzihlukanise (ayikalelwe ukuphepha)
• Ukubeka izingxenye eduze kakhulu nemiphetho yebhodi
• Ukuziba ukuncishiswa kokuphakama kokufakwa kokuphakama okuphezulu

Izixazululo ezihlakaniphile ezidlula ngaso sonke isikhathi:

• Izikhala zomzila phakathi kwezigaba eziyinhloko nezesibili
• Sebenzisa ama-optocoupler anesilinganiso sokuphepha anezilinganiso ezifanele ze-CTI
• Faka okokunamathelayo ukuze unciphise izidingo ze-creepage ngedigri eyodwa yokungcola

Ngephrojekthi ye-PCB ye-Medical Power Supply Filter yakamuva , sifinyelele ukuhlukaniswa kwe-2×MOPP (Means of Patient Protection) endaweni encane ngo-40% sisebenzisa indawo yokubeka amasu kanye nezinto ze-CTI ephezulu.

I-Power Factor Correction PCB Design Imikhuba Engcono Kakhulu

Ukulungiswa Kwesici Samandla isn’t optional above 75W in most markets. But PFC circuits generate significant EMI if poorly implemented. The boost inductor placement makes or breaks your EMI performance. Position it away from sensitive control circuits, with the switching node facing away from the board edge.

Izici ezibalulekile zedizayini ye-PFC:

• Isivikeli sezinzwa samanje sidinga ukuxhumeka kwe-Kelvin kanye nomzila ohlukile oya kusilawuli
• I-Boost diode idinga isekethe ye-snubber ukulawula umsindo wokuhlehla wokutakula
• Ukubekwa kwe-output capacitor kuthinta kokubili ukuqina nokulawula iluphu

Inqubo yethu yokukhiqiza i-Power Converter PCB ifaka phakathi ukuhlolwa kwe-EMI ngaphambi kokuthobela imithetho, okubangela izinkinga ngaphambi kokuhlolwa kwesitifiketi okubizayo.

Idizayini Ye-Transformer Nokuvikela Izimpahla Zamandla ze-AC-DC

I-transformer ibusa i-AC-DC converter PCB izindleko nokusebenza. Ukuhlanganiswa okungalungile kwenqaba ukwenziwa ngcono kwe-transformer ebizayo. Faka ama-Mount transformer anemvume eyanele yokupholisa ukugeleza komoya. Ziqondise ukuze unciphise ukuhlangana kwenkambu kumasekhethi okulawula.

Amasu okuvikela asebenzayo:

• Izihlangu zethusi phakathi kwama-winding ayisisekelo nakwesibili zinciphisa umsindo wemodi evamile
• Amabhendi e-Flux azungeze ama-cores aqukethe izinkambu kazibuthe
• Ukubekwa kwamaqhinga kunciphisa ukuhlanganisa izingxenye zokuhlunga okokufaka

Kuma-PCB e-LLC converter asebenza ngesivinini esiphezulu kanye nemiklamo ye-resonant converter, ama-transformer e-planar ahlanganiswe ne-PCB anciphisa ukuphakama futhi athuthukise ukuphindaphindeka. Amandla ethu Okukhiqiza i-PCB afaka phakathi ukukhiqizwa kwe-transformer e-planar ehlanganisiwe ene-impedance windings elawulwayo.

Okokufaka Ukuvikelwa Kwesekethe kumabhodi Amandla e-AC-DC

Ukuhlolwa kwelebhu akufani nekhwalithi yamandla ezimboni. Ama-Real AC mains afaka ama-surge, ama-sags, nama-transients acekela phansi iziguquli ezingavikelwe ngokwanele. Sebenzisa izendlalelo eziningi zokuvikela:

Umugqa wokuqala: Amashubhu akhipha igesi noma ama-TVS diode okuphakama okukhulu Umugqa wesibili: Ama-MOVs okwanda kwe-overvoltage okuqhubekayo Umugqa wesithathu: Isihlungi okokufaka somsindo nezinto ezidlulayo ezincane

Ngemiklamo ye-PCB yesiguquli se-AC-DC ezindaweni zezimboni, engeza ukutholwa kokulahlekelwa kwesigaba kanye nokuvikela i-brownout. Izingxenye ezengeziwe zibiza amasenti kodwa zivimbela ukwehluleka kwenkambu kubiza izinkulungwane.

I-Thermal Management Design yama-PCB Wokuhlinzeka Amandla

Iziguquli eziningi zesimanje ze-AC-DC kumele zisebenze ngaphandle kwabalandeli ngenxa yokwethembeka nezizathu zomsindo. Lokhu kudinga ukwakheka okushisayo okucophelelayo ukusuka kuzinga le-PCB ukuya phezulu. Sebenzisa ukumodela okushisayo kusenesikhathi ekwakhiweni—ukulungisa izinkinga zokushisa ngemva kwamasonto emfucumfucu yesakhiwo.

Ukuphatha okushisayo okusebenzayo:

• Misa izingxenye ezikhiqiza ukushisa zokugeleza kwe-convection yemvelo
• Sebenzisa ukuthululwa kwethusi njengezisakazwa zokushisa, hhayi nje ukuphatha okwamanje
• Cabangela umumo we-PCB kumkhiqizo wokugcina—amabhodi aqondile apholile kangcono
• Sebenzisa ukuvala shaqa okushisayo ngaphambi kokuba izingxenye zeqe izilinganiso

I-adaptha yakamuva ye-150W izuze ukusebenza okungenamdlandla ngokuthuthukisa ukubekwa kwengxenye ye-convection. Amazinga okushisa e-Junction ehle ngo-20°C uma kuqhathaniswa nesakhiwo sokuqala, aqeda isidingo sokupholisa ngempoqo.

Ukulungisa Okuphumayo Amasu Wokuklama Kwesekethe

Ukulungiswa okuvumelanayo kuthuthukisa ukusebenza kahle kodwa kwenza ukuklama kube nzima. Kokuphumayo okungaphansi kuka-3.3V, ukulungiswa okuvumelanayo kuyisibopho ukuze uthole ukusebenza kahle okwamukelekayo. Ngaphezu kwe-12V, ama-diode e-Schottky ngokuvamile ahlinzeka ngokusebenza okungcono kakhulu uma kucatshangelwa ubunkimbinkimbi nezindleko.

Amathiphu okuklama ohlangothini lwesibili:

• Beka izinto zokulungisa ngokushesha eduze kwamasekhondi e-transformer
• Sebenzisa ama-Schottky diode ahambisanayo nokwabelana kwamanje okulinganiselayo
• Sebenzisa isilawuli sesikhathi sokufa esifanele kuzilungisi ezivumelanisayo
• Engeza izihlungi eziphumayo ezinosayizi we-ripple current, hhayi nje i-ripple voltage

Inqubo yethu yokuhlanganisa i-Power Electronics PCB ifaka phakathi izithombe zokushisa ukuqinisekisa ukwabelana kwamanje okulinganiselayo ekucushweni kwe-rectifier ehambisanayo.

Ungasilungiselela Kanjani Isitifiketi Sokuphepha Kokuhlinzekwa Kwamandla

Idizayini yesitifiketi kusukela ekuqaleni. Ukufaka kabusha izici zokuphepha ngemva kwesakhiwo kuqinisekisa ukubambezeleka kanye nokweqa kwezindleko. Maka izingxenye ezibalulekile zokuphepha ngokucacile kuma-schematics nakusikrini sikasilika se-PCB. Sebenzisa kuphela izingxenye ezigunyazwe yi-ejensi ezikhundleni ezibalulekile zokuphepha.

Izisheshisi zesitifiketi:

• Gcina amafayela okuphepha ezingxenyeni ezinezitifiketi ze-ejensi
• Idokhumenti yokuhlaziya i-creepage/clearance ngaphambi kwesakhiwo
• Sebenzisa imiklamo ye-transformer eqinisekisiwe enemibiko ekhona yokuphepha
• Sebenzisa ukuhlanganisa ngokwezidingo ezijwayelekile, hhayi nje ukuvikela

Bambisana ne-Highleap Electronics for Electronic Manufacturing Service eqonda izidingo zokuphepha ezimakethe zomhlaba wonke. Sizokusiza ugweme izingibe zokuqinisekiswa ngenkathi ulungiselela ukusebenza kahle kanye nezindleko.

Imibuzo Evame Ukubuzwa Mayelana ne-AC-DC Converter PCB Design

Yimuphi umehluko oyinhloko phakathi kwe-Class I ne-Class II AC-DC yezidingo zokuphakelwa kwamandla kwe-PCB?

Amandla kagesi eSigaba I adinga umhlaba ovikelayo kanye nokwahlukanisa okuyisisekelo, kuyilapho amadizayini Ekilasi II (afakwe kabili) adinga ukwahlukanisa okuqinisiwe ngaphandle kokuncika ekuvikeleni phansi. Ngemiklamo ye-PCB yesiguquli samandla e-AC-DC, Ikilasi II lidinga amabanga amakhudlwana e-creepage (ngokuvamile angu-6-8mm ku-230VAC) kanye nemigoqo yokwengeza eyengeziwe. Ukuqonda lezi zigaba kusenesikhathi kuvimbela ukwakhiwa kabusha okumba eqolo futhi kuqinisekisa ukuthobelana nezindinganiso zokuphepha zamazwe ngamazwe njenge-IEC 62368-1.

Ukubekwa kwengxenye kuthinta kanjani ukusebenza kwe-EMI kuma-PCB okuphakela amandla emodi yokushintsha?

Ukubekwa kwengxenye efanele kubalulekile ekwakhiweni kokuphakelwa kwamandla okuphansi kwe-EMI. Isihlungi sokufaka kufanele simiswe eduze nesixhumi sokufaka se-AC, bese isifunda se-PFC silandela ngokushesha. Gcina ama-node okushintsha ama-high-frequency kude namasekhethi okulawula e-analog azwelayo futhi ugcine ukuhlukana okufanele phakathi kwezinhlangothi eziyinhloko nesesibili. Ukubekwa kwamaqhinga kunganciphisa i-EMI ngo-10-15dB, okwenza kube lula kakhulu ukuhlola ukuthobela kwezinhlelo zokusebenza ze-PCB zokunikezwa kwamandla kwemodi yokushintsha.

Yiziphi izinzuzo zokusebenzisa kazibuthe eplanethi kumiklamo yokuguqula i-AC-DC ephezulu kakhulu?

Ozibuthe be-Planar banikeza izinzuzo ezimbalwa ze-compact AC-DC zokuguqula amandla ezicelo: ubude bephrofayela obuncishisiwe (u-60-80% buphansi kuneziguquli ezivamile), ukusebenza kahle okushisayo okushisayo ngenxa yendawo enkulu, ukukhiqizwa kabusha okuthuthukisiwe okunama-winding okusekelwe ku-PCB, nezici ezingcono ze-EMI ngokusebenzisa i-inductance yokuvuza okulawulwayo. Lezi zinzuzo zenza iziguquli ezihleliwe zilungele idizayini ye-PCB enamandla amakhulu ezinhlelweni ezibambezeleke esikhaleni ezifana nemishini yezokwelapha nezilawuli zezimboni.