Likarolo tsa inductance tsa SMD li sebelisoa palo e nyane ea lipotoloho. Li sebelisoa feela pheletsong ea phepelo ea matla a tlase a matla a taolo ea DC. Li ka sebelisoa hammoho le li-filter capacitor ho theha potoloho ea filthara e nang le sebopeho sa π ea CLC. . The inductive element e entsoe ka khoele e le 'ngoe, tse ling li na le konokono ea makenete (inductance e kholo), yuniti ka kakaretso e hlahisoa ka μH le mH,' me boleng ba hona joale bo potolohang ke li-milliamp tse 'maloa ho isa ho limilimithara tse makholo a' maloa.
Mekhoa ea boitsebahatso ea li-inductors tsa SMD ke efe? SMD Shielded Power Inductor Factory ho arolelana le uena.
Mokhoa oa ho tsebahatsa li-inductor tsa SMD, li-inductors tsa SMD li fumaneha ka liforomo tsa ho paka tse chitja, tse lisekoere le tse khutlonnetsepa, 'me boholo ba 'mala o ntšo. Ka li-inductors tsa tšepe (kapa li-circle inductors), ho bonolo ho li khetholla ho tloha ponahalong. Leha ho le joalo, li-inductors tse ling tse nang le li-rectangular li tšoana le li-resistors tsa chip ho latela ponahalo. Letšoao la chip inductor holim'a boto ea potoloho ka moetsi oa inverter le tšoauoa ka lentsoe L. Mekhahlelo ea ho sebetsa ea inductor e kenyelletsa inductance, boleng ba Q (boleng ba boleng), khanyetso ea DC, e lekantsoeng hona joale, maqhubu a ikemetseng, joalo-joalo. , empa boholo ba chip inductor bo fokotsehile, 'me boholo ba bona ba tšoauoa feela ka inductance,' me mekhahlelo e meng ha e tšoauoa, 'me hangata ke mokhoa oa ho ngola ka mokhoa o sa tobang - ho ngola 'meleng oa chip inductor ke karolo feela ea tlhahisoleseding ea tlhaloso eohle le mohlala, ke hore, boholo ba eona ke boitsebiso ba inductance feela.
1. Mokhoa oa ho tsebahatsa li-inductor tsa SMD:
1) Ho tloha ponahalong, joalo ka inductor ea lisekoere kapa e chitja e nang le mokokotlo oa makenete, molumo o moholo hanyane, 'me mokokotlo oa makenete le coil li ka bonoa;
2) Li-inductors tse ling li tšoana le li-resistors tsa chip ka ponahalo, empa ha ho na linomoro le litlhaku tse tšoailoeng, ke letšoao le lenyenyane feela la selikalikoe, le bolelang likarolo tsa inductance;
3) Linomoro tsa serial tsa likarolo tsa potoloho hangata li tšoauoa ka lengolo L, joalo ka L1, DL1, joalo-joalo.
4) Ho na le lengolo la inductance, joalo ka 100.
5) Khanyetso ea AC ea inductor e loketseng e kholo, athe khanyetso ea DC ke zero. Boleng ba khanyetso bo lekantsoeng ba elemente ea inductive bo nyane haholo, ka boleng ba khanyetso bo haufi le li-ohms tsa zero. Ka ho shebella le ho lekanya (boemo le ts'ebetso ea potoloho), e ka khetholla hore na karolo ke "chip resistor" kapa "chip inductor", 'me e fumane hore na ke karolo efe ea inductive.
6) Sebelisa tester e khethehileng ea inductance ho khaola karolo ho tloha potolohong le ho lekanya inductance ea eona.
2. Phetoho ea liphoso:
1) Likarolo tsa mofuta o tšoanang li ka tlosoa boto ea potoloho ea litšila ebe e nkeloa sebaka
2) Ntlha ea pele, etsa qeto ea hore na inductance le boleng ba hona joale bo potolohang, e nkele sebaka ka likarolo tse tloaelehileng tsa leaded inductance, 'me u li lokise hantle.
3) Ho itšehla thajana, ho etsa li-substitutes tsa inductance, ho na le bothata bo itseng ts'ebetsong
4) Haeba ho se na tšusumetso e totobetseng mosebetsing oa potoloho, tokiso ea tšohanyetso e ka ba nakoana e khutšoanyane
Li-Inductors tsa Chip tse khothalelitsoeng tseo batho ba bangata ba li hlokang
Mokhoa oa ho khetha inductor ho latela litlhoko tsa hau
Ha u khetha sehlahisoa, kamehla khetha sehlahisoa ho latela litlhoko tsa kantle. Ho joalo le ka Integrated molding chip inductance , u lokela ho nahana ka lintlha, ebe u khetha li-inductors tse loketseng tsa karolo e le 'ngoe, li-inductors tse sirelelitsoeng, le li-inductors tsa matla a chip. Ho na le lintlha tse ngata tse amang chip inductor. Ha re bue ka mokhoa oa ho khetha chip inductor ho latela litlhoko.
1. Khetha inductor ho ea ka litlhoko
Ha u khetha chip inductor bakeng sa ts'ebeliso ea matla e nkehang, lintlha tse tharo tsa bohlokoa li lokela ho nahanoa: boholo le boholo, 'me ea boraro ke boholo. Sebaka sa boto ea potoloho ka har'a mehala ea cellular se maemong a holimo, haholo-holo kaha lits'ebetso tse joalo ka libapali, lithelevishene le video li eketsoa fonong. Keketseho ea ts'ebetso e tla eketsa ts'ebetso ea hajoale ea betri. Ka hona, li-module tseo ka tloaelo li tsamaisoang ke li-linear regulators kapa tse hokahaneng ka kotloloho le libeteri li hloka tharollo ea matla a holimo. Mohato o mong o lebisang tharollong ea matla a phahameng ke ho sebelisa converter ea magnetic buck.
Ho phaella ho boholo, litekanyetso tse ka sehloohong tsa inductance ke boleng ba inductance ho frequency switching, DC impedance ea coil, saturation e eketsehileng hona joale, RMS e eketsehileng ea hona joale, ESR ea ho thibela puisano le ntlha. Ho itšetlehile ka kopo, ho bohlokoa hape hore khetho ea mofuta oa inductor e sirelelitsoe kapa e sa sireletseha.
Ho ts'oana le leeme la DC ka capacitor, Morekisi A's 2.2µH inductor e kanna ea fapana haholo le ea Vendor B. Kamano pakeng tsa boleng ba inductance le DC ea hona joale ea chip inductor sebakeng se loketseng sa mocheso ke lekhalo la bohlokoa haholo, le lokelang ho fumanoa ho moetsi. Nako e eketsehileng ea saturation current (ISAT) e ka fumanoa mokotong ona. ISAT ka kakaretso e hlalosoa e le ho theoha ha boleng ba inductance. DC ea hajoale ha chelete e le 30[[%]] ea boleng bo eketsehileng. Baetsi ba bang ba li-inductor ha ba na ISAT e tloaelehileng. Mohlomong ba fane ka DC ea hona joale ha mocheso o ne o le 40 ° C ho feta mocheso o teng.
Ha maqhubu a ho fetola a feta 2MHz, ho hlokahala hore u ele hloko ka ho khetheha tahlehelo ea puisano ea inductor. ISAT le DCR ea li-inductors tsa bahlahisi ba fapaneng ba thathamisitsoeng ka mokhoa o tloaelehileng e ka 'na ea e-ba le litšitiso tse fapaneng haholo tsa puisano ka maqhubu a ho fetoha, ho fella ka matla a totobetseng tlas'a mojaro o bobebe. phapang. Sena se bohlokoa bakeng sa ho ntlafatsa bophelo ba betri lits'ebetsong tsa motlakase tse nkehang habonolo, tse qetang boholo ba nako ea tsona li robetse, li le boemong ba standby, kapa li sebelisa matla a tlase.
Kaha baetsi ba li-chip inductor ha ba fane ka lintlha tsa ESR le Q factor, baqapi ba lokela ho ba botsa eona. Kamano pakeng tsa inductance le ea hona joale e fanoeng ke moetsi hangata e lekanyelitsoe ho 25 ° C, kahoo lintlha tse amehang ka har'a mocheso oa mocheso o sebetsang li lokela ho fumanoa. Boemo bo bobe ka ho fetisisa hangata ke 85°C.
Khothalletsa ho Bala
Khetheha, ka ho hlahisa mefuta e sa tšoaneng ea 'mala lesale inductors, inductors beaded, inductors paatsepama, tripod inductors, inductors setsiba, inductors bareng, makhetlo tloaelehile hore batho ba mokgwa wa, e phahameng-maqhubu baru le dikarolo tse ding a khoheli a.
Nako ea poso: Sep-02-2022