電流補(bǔ)償扼流選型和應(yīng)用(共模電感)

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

比貼片鐵氧體價格高

更簡單的制作工藝

technical

advantagesbetter

efficiency

high

current

with

highinductancevalueonlysolutionforsome

highspeedsignal(USB,CAN…..)

技術(shù)優(yōu)勢提高效率大電流和高感值唯一的一些高速信號解決方案例如：(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:沒有或者對有用信號的干擾很小差模

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

(差模differentialmodeimpedan差模阻抗commonmodeimpedance共模阻抗bestsolutiontofilter

noise

closetosignal

frequency最好的方案過濾噪聲接近信號頻率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獨立dependson?core“依靠，磁芯attenuationofused

signal有用信號的衰減Low低High高CommonModeChoke共模扼流圈Measurement測量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:低高速信號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:僅應(yīng)用于低速信號

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WE-LFWE-CMBWE-FCWE-CMBNiZn

bigrangeof

sizestoXref

our

competitor大范圍的尺寸代替我們競爭對手SVcaseis

very

competitive產(chǎn)品有很大競爭優(yōu)勢

high

current-upto35A大電流可達(dá)到35Aless

competitor

with

thispackage較少的競爭對手有這樣的封裝

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)國際尺寸(歐洲，亞洲，美國)+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+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/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競爭對手&應(yīng)用CommonModeChoke共模扼流圈AskPMbefore

offering報價前詢問PMcustomized

parts定制品CommonModeChoke共模扼流圈Whotomake

Xref?誰來制成Xref?easy

way

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

checkthepackagingfirstandlooktheour

closerboxcheckthecurrentchecktheimpedanceorinductancevaluetakecareofthedifferentialmodeimpedance(bifilarorsectional

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

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