Amacandelo e- SMD inductance asetyenziswa kwinani elincinci leesekethe. Zisetyenziswa kuphela ekupheleni kwemveliso yombane ophantsi-voltage DC. Zinokusetyenziselwa kunye neecapacitors zokucoca ukwenza isekethe yokucoca emile okwe-π ye-CLC. . I-element inductive yenziwe ngekhoyili enye, enye ene-core magnetic (inductance enkulu), iyunithi ibonakaliswe ngokubanzi kwi-μH kunye ne-mH, kwaye ixabiso langoku elijikelezayo liyi-milliamps ezimbalwa ukuya kumakhulu amaninzi e-milliamp.
Zeziphi iindlela zokuchongwa kwee-inductors ze-SMD? I-SMD Shielded Power Inductor Factory ukwabelana nawe.
Indlela yokuchonga i-inductor ye-SMD, ii-inductors ze-SMD ziyafumaneka kwimijikelezo, isikwere kunye neefom zokupakisha ezixande, kwaye umbala umnyama kakhulu. Ngama-inductors entsimbi (okanye i-circular inductors), kulula ukuchonga ukusuka kwimbonakalo. Nangona kunjalo, ezinye ii-inductors ezixande zifana kakhulu ne-chip resistors ngokwembonakalo. Ileyibhile ye-chip inductor kwibhodi yesiphaluka ngumenzi we-inverter iphawulwe ngegama elithi L. Iiparamitha zokusebenza ze-inductor ziquka i-inductance, ixabiso le-Q (umgangatho wexabiso), ukuxhatshazwa kwe-DC, ukulinganiswa kwangoku, i-self-resonant frequency, njl. , kodwa ubukhulu be-chip inductor bulinganiselwe, kwaye uninzi lwazo luphawulwe kuphela nge-inductance, kwaye ezinye iiparameters aziphawulwanga, kwaye zihlala ziyindlela yokubhala ngokungathanga ngqo - ukuleyibheli kumzimba we-chip inductor yinxalenye kuphela ulwazi lwenkcazo yonke kunye nemodeli, oko kukuthi, uninzi lwayo lulwazi lwe-inductance kuphela.
1. Indlela yokuchonga i-SMD inductor:
I-1) Ukusuka kwimbonakalo, njenge-square okanye i-inductor yesetyhula ene-core magnetic, umthamo uncinci, kwaye i-core magnetic kunye nekhoyili ingabonwa;
2) Ezinye i-chip inductors ziyafana ne-chip resistors ngenkangeleko, kodwa akukho manani kunye neeleta eziphawulweyo, kuphela uphawu oluncinci lwesangqa, elithetha amacandelo e-inductance;
3) Iinombolo zeesiriyali zamacandelo kwisekethe zihlala ziphawulwa ngonobumba u-L, njengo-L1, DL1, njl.
4) Kukho ileyibhile ye-inductance, efana ne-100.
I-5) Ukuxhatshazwa kwe-AC ye-inductor efanelekileyo kukhulu, ngelixa i-DC resistance yi-zero. Ixabiso lokuchasa elilinganisiweyo le-inductive element lincinci kakhulu, linexabiso lokumelana kufutshane ne-zero ohms. Ngokuqwalaselwa kunye nokulinganisa (indawo kunye nomsebenzi kwisekethe), inokwazi ukwahlula ukuba icandelo liyi-resistor ye-chip okanye i-inductor ye-chip, kwaye inqume icandelo le-inductive.
I-6) Sebenzisa i-tester yokuhlola i-inductance ekhethekileyo yokuqhawula icandelo kwisiphaluka kunye nokulinganisa inductance yayo.
2. Ukutshintshwa kweempazamo:
I-1) Amacandelo ohlobo olufanayo anokususwa kwibhodi yesekethe yenkunkuma kunye nokutshintshwa
2) Okokuqala misela i-inductance kunye nexabiso elijikelezayo langoku, endaweni yalo ngamacandelo aqhelekileyo okukhokelela, kwaye uwalungise kakuhle.
3) Ukuzimela ngokwakho, ukwenza i-inductance substitutes, kukho ubunzima obuthile ekusebenzeni
4) Ukuba akukho mpembelelo ecacileyo ekusebenzeni kwesekethe, ukulungiswa kongxamiseko kunokukhawuleza kukufutshane
Ii-Chip Inductors ezicetyiswayo ezifunwa ngabantu abaninzi
Indlela yokukhetha i-inductor ngokweemfuno zakho
Xa ukhetha imveliso, soloko ukhetha imveliso esekelwe kwiimfuno zangaphandle. Kuyafana ne- Integrated molding chip inductance , kufuneka uqwalasele izinto, uze ukhethe i-chip inductors efanelekileyo, i-shielded chip inductors, kunye ne-inductors yamandla e-chip. Kukho izinto ezininzi ezichaphazela i-chip inductor. Makhe sithethe malunga nendlela yokukhetha i-chip inductor ngokweemfuno.
1. Khetha i-inductor ngokweemfuno
Xa ukhetha i-chip inductor kwisicelo samandla esiphathwayo, amanqaku amathathu abalulekileyo kufuneka aqwalaselwe: ubungakanani kunye nobukhulu, kwaye okwesithathu ubukhulu. Indawo yebhodi yesekethe kwiifowuni eziphathwayo kwi-premium, ngakumbi njengemisebenzi efana nabadlali, iiTV kunye nevidiyo zongezwa kwifowuni. Ukonyuka kokusebenza kuya kwandisa umzobo wangoku webhetri. Ke ngoko, iimodyuli eziye zanikwa amandla ngabalawuli bemigca okanye eziqhagamshelwe ngokuthe ngqo kwiibhetri zifuna izisombululo zamandla aphezulu. Inyathelo elinye elibhekiselele kwisisombululo samandla aphezulu kukusebenzisa isiguquli se-magnetic buck.
Ukongeza kubukhulu, imilinganiselo ephambili ye-inductance ixabiso le-inductance kwi-frequency switching frequency, i-DC impedance ye-coil, i-saturation yangoku eyongezelelweyo, i-RMS eyongezelelweyo yangoku, i-ESR yokunxibelelana kunye ne-factor. Ngokuxhomekeke kwisicelo, kukwabalulekile ukuba ukhetho lohlobo lwe-inductor lukhuselekile okanye lungakhuselekanga.
Ngokufana ne-DC bias kwi-capacitor, i-inductor ye-Vendor A's 2.2µH inokwahluka kakhulu kwi-B's yomthengisi. Ubudlelwane phakathi kwexabiso le-inductance kunye ne-DC yangoku ye-chip inductor kuluhlu olufanelekileyo lweqondo lokushisa liyi-curve ebaluleke kakhulu, ekufuneka ifunyenwe kumenzi. I-saturation current eyongezelelweyo (ISAT) inokufumaneka kule curve. I-ISAT ichazwa ngokubanzi njengokuhla kwexabiso le-inductance. I-DC yangoku xa isixa-mali singama-30[[%]] sexabiso elongezelelweyo. Abanye abavelisi be-inductor abanayo i-ISAT eqhelekileyo. Mhlawumbi banike i-DC yangoku xa iqondo lobushushu lalingama-40°C ngaphezu kobushushu be-ambient.
Xa i-frequency switching idlula i-2MHz, kuyimfuneko ukuhlawula ingqalelo ekhethekileyo kwilahleko yonxibelelwano ye-inductor. I-ISAT kunye ne-DCR ye-inductors yabavelisi abahlukeneyo abadweliswe kwinkcazo esemgangathweni ingaba nokuphazamiseka konxibelelwano okwahlukileyo kakhulu kwi-frequency switching frequency, okukhokelela kumandla acacileyo phantsi komthwalo wokukhanya. umahluko. Oku kubalulekile ekuphuculeni ubomi bebhetri kwiinkqubo zamandla aphathwayo, ezichitha ixesha elininzi zilele, ukulinda, okanye imowudi yamandla aphantsi.
Ekubeni abavelisi be-chip inductor bengafane babonelele nge-ESR kunye ne-Q yolwazi lwento, abaqulunqi kufuneka bababuze. Ubudlelwane phakathi kwe-inductance kunye nekhoyo ngoku enikwe ngumenzi idla ngokukhawulelwa kwi-25 ° C, ngoko ke idatha echaphazelekayo ngaphakathi komgangatho wokushisa osebenzayo kufuneka ifunyanwe. Eyona meko imbi kakhulu ngokuqhelekileyo yi-85°C.
Cebisa ukuFunda
Specialising ekuvelisweni iintlobo ezahlukeneyo umbala inductors ring, inductors zobuhlalu, inductors nkqo, inductors enemilenze emithathu, inductors patch, bha inductors, imibhijelo imo eqhelekileyo, abaguquli oluvela rhoqo kunye namanye amacandelo ngemagnethi.
Ixesha lokuposa: Sep-02-2022