Kev ceev faj rau kev xaiv lub zog inductor

Kev ceev faj rau xaiv lub zog inductors. Lub hwj chim inductors, tseem hu ua lub qhov txhab inductors, yog cov khoom siv hluav taws xob induction ua los ntawm cov kab hluav taws xob zoo xws li cov hlau enameled thiab gauze qhwv hlau. Lub hwj chim inductors muaj zog tiv thaiv huab cua thiab tuaj yeem siv rau hauv lub computer motherboards, microcontrollers, graphics phaib, thiab lwm yam khoom siv mus sij hawm ntev. Ordinary hwj chim inductors tsuas yog siv tau raws li DC-DC modules, lim circuits, thiab lwm yam, uas tau ua rau ntau tus neeg tsis ntseeg txog kev xaiv. Niaj hnub no, peb feem ntau qhia yuav ua li cas xaiv lub hwj chim inductors.

Kev ceev faj rau lub zog inductance:

1. zaus

Vim tias muaj cov kab mob parasitic capacitors ntawm cov coils, uas tsim kom muaj qhov sib npaug ntawm cov resonance nrog lawv cov inductance, yuav muaj tus kheej oscillation zaus (SRF), uas muaj feem xyuam rau EPC. Yog li ntawd, qhov me me ntawm EPC, qhov zoo dua, ua kom muaj ntau zaus ntawm inductance. SRF yuav tsum muaj tsawg kawg yog kaum npaug ntawm qhov hloov zaus ntawm DC-DC transformer, piv txwv li, yog tias qhov hloov zaus yog 1.2MHz, SRF yuav tsum muaj tsawg kawg yog 12MHz. Yog li, lub hwj chim inductor yuav tsum tau hollowed tsis muaj hlau, kom tsis txhob tsim EPC ntxiv thiab txo qhov zaus ntawm qhov inductance.

2. Inductance tus nqi

Nyob rau hauv txoj kev xav, qhov sib txawv ntawm qhov siab tshaj plaws thiab qhov tsawg kawg nkaus tso zis tam sim no, hu ua ripple, yuav tsum muaj tsawg li tsawg tau, txhais tau hais tias cov zis tam sim no ruaj khov dua. Qhov no tuaj yeem ua rau muaj kev hloov pauv ntau dua thiab txo EMI cuam tshuam. Qhov loj dua tus nqi inductance, qhov me dua qhov ripple. Txawm li cas los xij, yog tias tus nqi inductance loj dhau, nws yuav ua rau qeeb qeeb ntawm cov lus teb tam sim ntawm qhov kawg, thiab cov zis tam sim no tsis tuaj yeem hloov pauv synchronously nrog lub voj voog pauv hauv lub sijhawm. Yog li ntawd, nws yog ib qho tsim nyog los xaiv tus nqi tsim nyog inductance es tsis txhob ua qhov muag tsis pom kev nce ntxiv.

3. Rated tam sim no

Thaum cov ndlwg tam sim no loj dhau lawm, tus nqi inductance yuav txo qis, thiab cov dej ntws tam sim no nrog 30% txo tus nqi inductance txhais tau tias yog saturation tam sim no. Lub sijhawm no, lub zog inductance uas nkag mus rau hauv lub xeev saturation thiab nkag mus rau lub xeev saturation kuj tseem tuaj yeem hu ua lub zog inductance, uas yog sib npaug ntawm cov xaim thiab yuav luag tsis muaj kev cuam tshuam rau stabilizing tam sim no. Nws ripple yuav ua loj heev. Yog li ntawd, qhov saturation tam sim no yog tus taw tes los txiav txim qhov linearity ntawm lub hwj chim inductance, thiab tau kawg, qhov loj dua qhov zoo dua, Feem ntau, nws yuav tsum muaj tsawg kawg yog 1.3 npaug ntawm qhov tam sim no ntws los ntawm nws.

4. Kev tiv thaiv thiab tiv thaiv npog

Txhua yam khoom muaj nws sab hauv tsis kam DCR, thiab inductance tsis muaj kev zam. Raws li P=I * I * R, nws siv ntau tam sim no (uas hloov mus rau hauv lub zog hluav taws xob), uas ua rau txo qis ntawm kev hloov dua siab tshiab. Yog li ntawd, qhov me me ntawm DCR, qhov zoo dua. Yog tias tus nqi inductance loj dhau lawm, nws tsis tsuas yog ua kom qeeb ntawm cov lus teb tam sim ntawm qhov kawg ntawm qhov kawg, tab sis kuj ua rau DCR nce vim qhov nce ntawm cov coils qhov txhab. Yog li ntawd, nws yog ib qho tsim nyog los xaiv tus nqi tsim nyog. Lub hwj chim inductor nrog lub npog tiv thaiv muaj DCR me dua thiab tuaj yeem tiv thaiv EMI, thaum tseem tsis txhob sib txuas nrog cov hlau uas nyob ib sab.

Cov yam ntxwv ntawm lub zog inductance:

1. Flat hauv qab nto haum rau nto mounting;

2. Zoo kawg lub ntsej muag lub zog thiab zoo soldering kev kawm;

3. Nws muaj cov yam ntxwv ntawm Q tus nqi siab thiab qis impedance;

4. Tsawg sib nqus nqus, tsis tshua muaj kev tiv thaiv ncaj qha, thiab tsis kam mus rau cov dej ntws siab;

5. Ribbon ntim yog muaj rau kev sib sau ua ke.