WüRTHELEKTRONIKEISOSGMBH&CO.KG伍爾特電子有限公司(Eisos)2009CURRENTCOMPENSATEDCHOKESSELECTION&APPLICATIONS–電流補(bǔ)償扼流選型和應(yīng)用

Whycurrentcompensated?為何要電流補(bǔ)償?

economic

advantages

more

expensive

thanSMDferrite

easytomakemoreturnover

經(jīng)濟(jì)優(yōu)勢(shì)

比貼片鐵氧體價(jià)格高

更簡(jiǎn)單的制作工藝

technical

advantagesbetter

efficiency

high

current

with

highinductancevalueonlysolutionforsome

highspeedsignal(USB,CAN…..)

技術(shù)優(yōu)勢(shì)提高效率大電流和高感值唯一的一些高速信號(hào)解決方案例如：(USB,CAN…..)

current

compensatedchoke=commonmodechoke–WHY?電流補(bǔ)償扼流=共模扼流–為什么呢?reductionofinterferencesoutwards

your

deviceinwards

your

device減少干擾外部設(shè)備內(nèi)部設(shè)備result:?no“or

low

influencingofused

signal

highattenuationofinterferencesdifferentialmodecommonmode

EMV-Allgemein

GrundlagenFilter&SignaleEinfüged?mpfungFiltertopologienSimulationWhy

current

compensated?為何要電流補(bǔ)償?結(jié)果:沒(méi)有或者對(duì)有用信號(hào)的干擾很小差模

阻止衰減共模CommonModeChoke共模濾波器f/MHzImpedanz/?noise(common

mode)共模噪聲used

signal

(differentialmode)有用信號(hào)

(差模differentialmodeimpedan差模阻抗commonmodeimpedance共模阻抗bestsolutiontofilter

noise

closetosignal

frequency最好的方案過(guò)濾噪聲接近信號(hào)頻率CommonModeChoke共模濾波器incomparisontosingle-choke相較于單扼流圈current

compensated

or

commonmodechoke電流補(bǔ)償或者說(shuō)共模線圈single

choke單扼流圈commonmodeimpedance共模阻抗High高lowtomedium低到中等differentialmodeimpedance差模阻抗Low低medium中等dependencyofimpedance

from

load

current阻抗依賴于負(fù)載電流Independent獨(dú)立dependson?core“依靠，磁芯attenuationofused

signal有用信號(hào)的衰減Low低High高CommonModeChoke共模扼流圈Measurement測(cè)量f/MHzImpedanz阻抗/?differentialmodeimpedance差模阻抗commonmodeimpedance共模阻抗CommonModeChoke共模扼流圈differentdesigns不同的設(shè)計(jì)bifilar雙絞線式sectional分段繞組LS~0,5…2%*LRLS~0,01…0,1%*LRCommonModeChoke共模扼流圈differentdesigns不同設(shè)計(jì)WE-SL2744226bifilar

winding雙線繞組WE-SL2744226Ssectional

winding分段繞組CommonModeChoke共模扼流圈分段繞組Whendowe

offerasectional

winding?什么時(shí)候我們提供下面的共模線圈?Sectional分段繞組

only

solutiontoguarantee

distances

between

the

two

winding

accordingtoIEC60938orUL1283

max.voltage

application:250VAC/DChighleakage

inductor提供方案保證量繞組的距離，是依據(jù)IEC60938orUL1283

應(yīng)用最大電壓:250VAC/DC高漏電感power

supply:"high"voltageapplicationsignal:lowandhighspeedsignal電源:應(yīng)用高壓

信號(hào):低高速信號(hào)CMchokeDMchoke

two

productsinone(preferred

for

power

supplies)

2合一產(chǎn)品(適用于電源)

max.voltage:printindatasheet

最大電壓:參考數(shù)據(jù)表CommonModeChoke共模扼流圈data

signal

application應(yīng)用在數(shù)據(jù)信號(hào)Bifilar雙絞線low

leakage

inductor低漏電感power

supply:lowvoltageapplicationsignal:only

lowspeedsignal電源:應(yīng)用于低壓信號(hào):僅應(yīng)用于低速信號(hào)

lowvoltageapplication

(42VAC/80VDC)

lowvoltageapplication

(42VAC/80VDC)

應(yīng)用于低壓(42VAC/80VDC)CommonModeChoke–Mainadvantages共模扼流圈–主要優(yōu)點(diǎn)WE-LFWE-CMBWE-FCWE-CMBNiZn

bigrangeof

sizestoXref

our

competitor大范圍的尺寸代替我們競(jìng)爭(zhēng)對(duì)手SVcaseis

very

competitive產(chǎn)品有很大競(jìng)爭(zhēng)優(yōu)勢(shì)

high

current-upto35A大電流可達(dá)到35Aless

competitor

with

thispackage較少的競(jìng)爭(zhēng)對(duì)手有這樣的封裝

high

leakageinductance

high

frequency

attenuation高頻衰減high

current大電流WE-LF-SMD

dreamfordesigner

highVoltageSMD

high

leakageinductance

高漏感CommonModeChoke共模扼流圈WE-FC:Internationalsize(Europe,Asia,US)國(guó)際尺寸(歐洲，亞洲，美國(guó))+highest

leakage

inductance+極大的漏電感+small

size+小尺寸+excellenthighfrequency

高頻

+highvoltage

burst

performance+高壓工作-only

for

small

currents

available-（緊應(yīng)用于小電流）small

power

supplies小功率WE-CMB:WE-CMBNiZn:small

size

applications用于小尺寸highcurrent

applications用于大電流motor

driver馬達(dá)驅(qū)動(dòng)+special

size+特殊的尺寸+product

withhighnominalcurrent產(chǎn)品要求的高額定電流+very

small

size+很小的尺寸

+only

vertical

version僅有垂直型

+special

size

+high

frequency

attenuation

+attenuationofburst(IEC61000-4-4)+特殊尺寸+高頻衰減+瞬間衰減(IEC61000-4-4)CommonModeChoke共模扼流圈WE-LF:Europeanstandard

component+Isolationtocomponents

around+Mechanical

protectionofthe

core+easytoplace歐標(biāo)元件+絕緣+機(jī)械保護(hù)磁芯+易存放general

industrial

applicationspower

supplies一般用于工業(yè)電源WE-LFSMD:+special

size+Isolationtocomponents

around+mechanical

protectionofwinding

andcore+easytoplace+reflow

solderable+defined

solder

pad+特殊的尺寸+絕緣+機(jī)械保護(hù)磁芯和繞組+易存放+可過(guò)回流焊+規(guī)范的焊盤smallpowersupplies(lineundload

filter)lightingtechnologysmall

size

applications小功率電源(線與負(fù)載濾波)照明技術(shù)用于小尺寸CommonModeChoke共模扼流圈comparisondifferentpower

line

commonmodechokes比較不同功率的共模扼流圈0123456current[A]789101112WE-LF0,4mH47mH0,68mH47mH1,8mH47mH1,8mH27mHTypSTypMTypLTypXLWE-LF

SMD0,7mH47mHTypSWE-FC0,82mH33mHTypS14μH100μHTypMWE-CMBNiZnWE-CMB1mH39mH1mH20mH1mH20mH1mH20mH1mH20mHTypXSTypSTypMTypLTypXL0,5mH1,8mH14-35ATypXXLCommonModeChoke共模扼流圈comparison

commonmodechokesCMB–CMBNiZnCMB共模扼流圈的比較CMB–CMBNiZnCMBNiZnCMBCommonModeChoke共模扼流圈comparison

commonmodechokesCMB–LF–FC共模扼流圈比較CMB–LF–FCFC:Horizontal

FC:VerticalLF:27mHFC:22mH(Horrizontal)FC:22mH(Vertical)CMB:20mHWE-FChashigher

impedanceincommon&differentialmode

WE-FC在共模和差模形式有較高的阻抗CommonModeChoke–Overview共模扼流圈-概述Current

compensated

chokes@WürthElektronik電流補(bǔ)償扼流圈@伍爾特電子für115/250VAC/max.35ASectional

winding傳統(tǒng)繞線信號(hào)/數(shù)據(jù)線Umax.=80VDC/Iupto2,5ATHTWE-LFWE-CMBTHTSMTsectionalbifilarCommonmodeferrite

brigde6-hole-ferrite

bead共模鐵氧體橋6-孔-鐵氧體磁珠WE-SLseriesWE-CNSWWE-SLseriesWE-SLseriesWE-CNSWWE-FCWE-CMBNiZnSMTWE-LFSMD

COMPETITORS&APPLICATIONS競(jìng)爭(zhēng)對(duì)手&應(yīng)用CommonModeChoke共模扼流圈AskPMbefore

offering報(bào)價(jià)前詢問(wèn)PMcustomized

parts定制品CommonModeChoke共模扼流圈Whotomake

Xref?誰(shuí)來(lái)制成Xref?easy

way

簡(jiǎn)單途徑:IfnotinAlphaplan如果不在Alphaplan系統(tǒng)

checkthepackagingfirstandlooktheour

closerboxcheckthecurrentchecktheimpedanceorinductancevaluetakecareofthedifferentialmodeimpedance(bifilarorsectional

winding)checkthelayout先核對(duì)包裝然后看我們接近核對(duì)電流核對(duì)阻抗和電感值考慮不同阻抗模式(雙絞線or分段繞法)核對(duì)布線

STRG+SHIFT+WCommonModeChoke共模扼流圈differentdefinition

for

inductanceandcurrent電感和電流的不同定義

WE-FC&EPCOSB82731CommonModeChoke共模扼流圈differentdefinition

for

inductanceandcurrent電感和電流的不同定義

WE-FC&EPCOSB82731LminLN+50%L[mH]eiSosDéfinition0,80,911,11,21,30,71,41,51,61,7EpcosDéfinition-30%CommonModeChoke–Applications共模扼流圈的應(yīng)用

fluorescent

lamps

low

voltagehalogenlamps

LED

熒光燈

低壓鹵素?zé)鬖EDCommonModeChoke–Applications共模扼流圈的應(yīng)用Switchmodepower