Mune chero chinjana chinogadzira magetsi dhizaini, iro dhizaini dhizaini yeiyo Pcb bhodhi ndiyo yekupedzisira link. Kana iyo nzira yekugadzira isina kufanira, iyo PCB inogona kupenya yakawandisa kukanganiswa kwemagetsi uye kuita kuti magetsi ashande asina kugadzikana. Dzinotevera inyaya dzinoda kutariswa mukuongorora nhanho imwe neimwe.

1. Dhizaini inoyerera kubva kuchirongwa kuenda kuPCB

Gadzira maparamendi echikamu-“input musimboti netlist -” dhizaini parameter marongero-“manual marongero-“manual wiring -” dhizaini yekusimbisa-“wongororo -” CAM kubuda.

2. Parameter setting

Chinhambwe chiri pakati pewaya dziri pedyo chinofanirwa kukwanisa kuzadzisa zvinodiwa zvekuchengetedza magetsi, uye kuitira kufambisa basa nekugadzira, chinhambwe chinofanira kunge chakafara sezvinobvira. Nzvimbo shoma shoma inofanira kunge yakakodzera kutakura

Voltage

Kana wiring density yakadzikira, nzvimbo yemitsara yemasaini inogona kuwedzerwa zvakakodzera. Kune mitsetse yechiratidzo ine mazinga akakwirira uye akaderera, nzvimbo inofanira kuva pfupi sezvinobvira uye nzvimbo inofanira kuwedzerwa. Kazhinji, wiring spacing inoiswa ku8mil. Nharaunda pakati pemucheto wegomba remukati wepadhi uye kumucheto kwebhodhi rakadhindwa rinofanira kuva rakakura kudarika 1mm, iyo inogona kudzivisa kukanganisa kwepadhi panguva yekugadzirisa. Kana mitsara yakabatana nemapadhi yakaonda, kuwirirana pakati pemapadhi uye maitiro kunofanira kugadzirwa kuva chimiro chekudonha. Kubatsira kweizvi ndekwekuti mapedhi haasi nyore kusvuura, asi maronda uye mapedhi hazvisi nyore kubviswa.

3. Chimiro chechimiro

Kudzidzira kwakaratidza kuti kunyange

redunhu

Iyo schematic dhizaini ndeyechokwadi, uye yakadhindwa yedunhu bhodhi haina kugadzirwa zvakanaka.

electronic

Kuvimbika kwemidziyo kunokanganisa zvakanyanya. Semuenzaniso, kana mitsara miviri yakatetepa yakafanana yebhodhi rakadhindwa iri pedyo, chiratidzo chewaveform chinononoka uye ruzha runoratidzwa ruchaumbwa pamugumo wetambo yekufambisa. Kuita kunodonha, saka kana uchigadzira bhodhi redunhu rakadhindwa, unofanirwa kuterera kutora nzira chaiyo. Imwe neimwe switching power supply ine four currents

Chiuno:

Simba chinja AC dunhu

Output rectifier AC wedunhu

Input chiratidzo sosi yazvino chiuno

Kubuda mutoro ikozvino loop yekupinda loop

Pfuura inenge DC ikozvino kune yekuisa

capacitance

Kuchaja, iyo sefa capacitor inonyanya kushanda seBroadband simba rekuchengetedza; zvakafanana, iyo inobuda sefa capacitor inoshandiswawo kuchengetedza iyo yakakwira-frequency simba kubva kune inoburitsa rectifier uye panguva imwechete kubvisa iyo DC simba rekubuda mutoro loop. Naizvozvo, materminals eiyo yekupinza uye yekubuda mafirita capacitors akakosha zvakanyanya. Iko kupinza uye kuburitsa ikozvino zvishwe zvinofanirwa kungobatanidzwa kune magetsi kubva kumaterminals efirita capacitor zvichiteerana; kana kuwirirana pakati pekuisa / kubuda loop uye simba rekushandura / rectifier loop haigoni kubatanidzwa kune capacitor Iyo terminal yakabatana zvakananga, uye simba re AC richabudiswa mukati mezvakatipoteredza nekuisa kana kuburitsa filter capacitor.

Iyo AC yedunhu remagetsi switch uye AC dunhu reiyo rectifier ine yakakwirira-amplitude trapezoidal currents. Izvo zvikamu zveharmonic zveaya mafungu zvakakwirira kwazvo. Iyo frequency yakakura kupfuura iyo yakakosha frequency ye switch. Iyo peak amplitude inogona kunge yakakwira se5 times amplitude yekuenderera mberi yekupinda / kubuda DC ikozvino. Nguva yekushandura inowanzoita 50ns. Aya zvishwe zviviri zvinonyanya kukanganiswa nemagetsi, saka zvishwe zveAC izvi zvinofanirwa kuiswa pamberi pemamwe mitsara yakadhindwa mumagetsi. Izvo zvitatu zvakakosha zveloop yega yega mafirita capacitors, magetsi switch kana rectifiers,

inductance

transformer

Inofanira kuiswa padivi peumwe neumwe, gadzirisa nzvimbo yezvikamu kuita nzira iripo pakati pavo ipfupi sezvinobvira.

Nzira yakanakisa yekumisikidza switching power supply marongero yakafanana neyakagadzirwa nemagetsi. Iyo yakanakisa dhizaini maitiro ndeaya anotevera:

1. Isa transformer

2. Gadzira simba rekushandura ikozvino loop

3. Gadzira chinobuda rectifier ikozvino loop

4. Kudzora dunhu rakabatana ne AC simba redunhu

Dhizaini yekupinda ikozvino sosi loop uye yekupinda

firita

Paunenge uchigadzira iyo inobuda mutoro loop uye inobuda sefa zvinoenderana neiyo inoshanda yuniti yedunhu, kana uchiisa kunze zvese zvikamu zvedunhu, zvinotevera misimboti inofanirwa kusangana:

Chinhu chekutanga kufunga ukuru hwePCB. Kana saizi yePCB yakakura kwazvo, mitsetse yakadhindwa ichave yakareba, iyo impedance ichawedzera, iyo anti-ruzha kugona inoderera, uye mutengo uchawedzera; kana saizi yePCB idiki, kupisa kwekupisa hakuzove kwakanaka, uye mitsetse iri padyo ichakanganiswa nyore. Chimiro chakanakisa chebhodhi redunhu chine rectangular, ine chikamu che3: 2 kana 4:3. Izvo zvikamu zviri pamucheto webhodhi redunhu kazhinji hazvisi pasi pe2mm kubva kumucheto kwebhodhi redunhu. Paunenge uchiisa zvikamu, funga nezveramangwana soldering, kwete yakanyanya kuomeswa Tora chikamu chepakati chega chega chinoshanda chedunhu sepakati uye woisa kunze uchiitenderedza. Izvo zvikamu zvinofanirwa kunge zvakaenzana, zvine hutsanana uye zvakarongeka zvakarongeka paPCB, kuderedza uye kupfupisa zvinotungamira uye kubatana pakati pezvikamu, uye decoupling capacitor inofanira kunge iri padyo sezvinobvira kuVCC yechigadzirwa. Denderedzwa dzinoshanda pamhepo dzepamusoro dzinofanira kufunga nezvezvikamu. Iyo yekugovera parameter. Kazhinji, dunhu rinofanira kurongedzerwa mukuwirirana sezvinobvira. Nenzira iyi, haisi yakanaka chete, asiwo iri nyore kuisa uye solder, uye iri nyore kuburitsa. Ronga chinzvimbo chega chega chinoshanda chedunhu chinoenderana nekuyerera kwedunhu, kuitira kuti marongerwo ave nyore kuyerera kwechiratidzo, uye chiratidzo chinoenderana sezvinobvira. Nheyo yekutanga yekuronga ndeyekuvimbisa wiring ye wiring. Teerera kukubatana kweinobhururuka inotungamira paunenge uchifambisa mudziyo, uye isa iyo yakabatana michina pamwe chete kuderedza loop nzvimbo zvakanyanya sezvinobvira kudzvanya kukanganiswa kwemwaranzi yekuchinja kwemagetsi.

4. Wiring

Simba rekushandura rine zviratidzo zvepamusoro-frequency. Chero mutsara wakadhindwa paPCB unogona kushanda sengere. Kureba uye upamhi hwemutsara wakadhindwa huchakanganisa impedance yayo uye inductance, nekudaro ichikanganisa frequency mhinduro. Kunyangwe mitsara yakadhindwa inopfuudza masaini eDC inogona kubatana neredhiyo frequency masaini kubva padhuze akadhindwa mitsara uye kukonzera matambudziko edunhu (kunyangwe masaini ekuvhiringidza anopenya zvakare). Nokudaro, mitsetse yose yakadhindwa inopfuura AC ikozvino inofanira kugadzirwa kuti ive pfupi uye yakafara sezvinobvira, izvo zvinoreva kuti zvikamu zvose zvakabatana nemitsara yakadhindwa uye mamwe magetsi emagetsi anofanira kuiswa pedyo zvikuru.

Kureba kwemutsara wakadhindwa kunoenderana neiyo inductance uye impedance, uye hupamhi hwakapesana nehupamhi kune inductance uye impedance yemutsetse wakadhindwa. Hurefu hunoratidza kureba kwemhinduro yemutsara wakadhindwa. Kureba kwacho, ndiko kudzikisa frequency iyo tambo yakadhindwa inogona kutumira uye kugamuchira masaisai emagetsi, uye inogona kupenya yakawanda redhiyo frequency simba. Zvinoenderana nehukuru hweiyo yakadhindwa yedunhu bhodhi ikozvino, edza kuwedzera hupamhi hwetambo yemagetsi kuderedza kupikisa kwechiuno. Panguva imwecheteyo, ita kuti kutungamira kwetambo yemagetsi uye mutsara wepasi uenderane nehutungamiri hwemazuva ano, izvo zvinobatsira kuwedzera simba rinopesana neruzha. Grounding ndiro bazi rezasi rezvishwe zvina zvazvino zve switching power supply. Inoita basa rakakosha sechinhu chinozivikanwa chedunhu, uye inzira yakakosha yekudzora kupindira. Nokudaro, kuiswa kwetambo yepasi kunofanira kunyatsotariswa mukugadzirisa. Kusanganisa zvigadziko zvakasiyana-siyana zvinokonzeresa kusagadzikana kwekushanda kwemagetsi.