共模电感及原理应用.ppt

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1、Wrth Elektronik eiSos 2009WRTH ELEKTRONIK EISOS GMBH&CO.KG伍尔特电子有限公司伍尔特电子有限公司(Eisos)(Eisos)2009CURRENT COMPENSATED CHOKES-SELECTION&APPLICATIONS-电流补偿扼流电流补偿扼流选型和应用选型和应用Wrth Elektronik eiSos 2009Whycurrentcompensated?为何要电流补偿?economic advantagesmore expensive than SMD ferrite easy to make more turnover

2、经济优势比贴片铁氧体价格高 更简单的制作工艺 technical advantages better efficiency high current with high inductance valueonly solution for some high speed signal(USB,CAN.)技术优势 提高效率 大电流和高感值 唯一的一些高速信号解决方案 例如：(USB,CAN.)current compensated choke=common mode choke WHY?电流补偿扼流=共模扼流 为什么呢?Wrth Elektronik eiSos 2009reduction of

3、interferencesoutwards your deviceinwards your device减少干扰外部设备内部设备result:no“or low influencing of used signal high attenuation of interferences differential mode common mode EMV-Allgemein Grundlagen Filter&Signale Einfgedmpfung Filtertopologien SimulationWhy current compensated?为何要电流补偿?结果:没有或者对有用信号的干扰

4、很小 差模 阻止衰减 共模Wrth Elektronik eiSos 2009Common Mode Choke 共模滤波器f/MHzImpedanz/noise(common mode)共模噪声used signal(differential mode)有用信号(差模differential mode impedan差模阻抗common mode impedance共模阻抗best solution to filter noise close to signal frequency最好的方案过滤噪声接近信号频率Wrth Elektronik eiSos 2009Common Mode Cho

5、ke 共模滤波器in comparison to single-choke相较于单扼流圈current compensated or common mode choke电流补偿 或者说共模线圈single choke单扼流圈common mode impedance共模阻抗High 高low to medium低到中等differential mode impedance差模阻抗Low 低medium中等dependency of impedance from load current阻抗依赖于负载电流Independent独立depends on core“依靠，磁芯attenuation

6、of used signal有用信号的衰减Low低High高Wrth Elektronik eiSos 2009Common Mode Choke共模扼流圈Measurement测量f/MHzImpedanz阻抗/differential mode impedance差模阻抗common mode impedance共模阻抗Wrth Elektronik eiSos 2009Common Mode Choke共模扼流圈different designs不同的设计bifilar双绞线式sectional分段绕组LS 0,5 2%*LRLS 0,01 0,1%*LRWrth Elektronik

7、eiSos 2009Common Mode Choke共模扼流圈different designs不同设计WE-SL2 744226bifilar winding双线绕组WE-SL2 744226Ssectional winding分段绕组Wrth Elektronik eiSos 2009Common Mode Choke共模扼流圈分段绕组When do we offer a sectional winding?什么时候我们提供下面的共模线圈?Sectional分段绕组 only solution to guarantee distances between the two winding

8、according to IEC60938 or UL1283 max.voltage application:250 VAC/DC high leakage inductor提供方案保证量绕组的距离，是依据IEC60938orUL1283应用最大电压:250VAC/DC高漏电感power supply:high voltage application signal:low and high speed signal电源:应用高压 信号:低高速信号CM chokeDM choke two products in one (preferred for power supplies)2合一产品(适

9、用于电源)max.voltage:print in data sheet最大电压:参考数据表Wrth Elektronik eiSos 2009Common Mode Choke共模扼流圈data signal application应用在数据信号Bifilar双绞线low leakage inductor低漏电感power supply:low voltage application signal:only low speed signal电源:应用于低压 信号:仅应用于低速信号 low voltage application (42 VAC/80V DC)low voltage appli

10、cation (42 VAC/80V DC)应用于低压(42VAC/80VDC)Wrth Elektronik eiSos 2009Common Mode Choke Main advantages共模扼流圈主要优点WE-LFWE-CMBWE-FCWE-CMB NiZn big range of sizes to Xref our competitor大范围的尺寸代替我们竞争对手 SV case is very competitive产品有很大竞争优势 high current-up to 35A大电流可达到35Aless competitor with this package较少的竞争对手

11、有这样的封装 high leakage inductance high frequency attenuation高频衰减high current大电流WE-LF-SMD dream for designer high Voltage SMD high leakage inductance高漏感Wrth Elektronik eiSos 2009Common Mode Choke共模扼流圈WE-FC:International size(Europe,Asia,US)国际尺寸(欧洲，亚洲，美国)+highest leakage inductance+极大的漏电感+small size+小尺寸+

12、excellent high frequency 高频+high voltage burst performance+高压工作-only for small currents available-（紧应用于小电流）small power supplies 小功率WE-CMB:WE-CMB NiZn:small size applications用于小尺寸high current applications用于大电流motor driver马达驱动+special size+特殊的尺寸+product with high nominal current产品要求的高额定电流+very small s

13、ize+很小的尺寸+only vertical version仅有垂直型+special size+high frequency attenuation+attenuation of burst(IEC 61000-4-4)+特殊尺寸+高频衰减+瞬间衰减(IEC61000-4-4)Wrth Elektronik eiSos 2009Common Mode Choke共模扼流圈WE-LF:European standard component+Isolation to components around+Mechanical protection of the core+easy to plac

14、e欧标元件+绝缘+机械保护磁芯+易存放general industrial applicationspower supplies一般用于工业电源WE-LF SMD:+special size+Isolation to components around+mechanical protection of winding and core+easy to place+reflow solderable+defined solder pad+特殊的尺寸+绝缘+机械保护磁芯和绕组+易存放+可过回流焊+规范的焊盘small power supplies(line und load filter)ligh

15、ting technologysmall size applications小功率电源(线与负载滤波)照明技术用于小尺寸Wrth Elektronik eiSos 2009Common Mode Choke共模扼流圈comparison different power line common mode chokes比较不同功率的共模扼流圈0123456current A789101112WE-LF0,4mH47mH0,68mH47mH1,8mH47mH1,8mH27mHTyp STyp MTyp LTyp XLWE-LFSMD0,7mH47mHTyp SWE-FC0,82mH33mHTyp S

16、14H100HTyp MWE-CMBNiZnWE-CMB1mH39mH1mH20mH1mH20mH1mH20mH1mH20mHTyp XSTyp STyp MTyp LTyp XL0,5mH1,8mH14-35ATyp XXLWrth Elektronik eiSos 2009Common Mode Choke共模扼流圈comparison common mode chokes CMB CMB NiZnCMB共模扼流圈的比较CMBCMBNiZnCMB NiZnCMBWrth Elektronik eiSos 2009Common Mode Choke共模扼流圈comparison common

17、 mode chokes CMB LF FC共模扼流圈比较CMBLFFCFC:Horizontal FC:VerticalLF:27mHFC:22mH(Horrizontal)FC:22mH(Vertical)CMB:20mH WE-FC has higher impedance in common&differential modeWE-FC在共模和差模形式有较高的阻抗Wrth Elektronik eiSos 2009Common Mode Choke Overview共模扼流圈-概述Current compensated chokes Wrth Elektronik电流补偿扼流圈伍尔特电

18、子fr 115/250VAC/max.35ASectional winding传统绕线信号/数据线Umax.=80VDC/I up to 2,5ATHTWE-LFWE-CMBTHTSMTsectionalbifilarCommon mode ferrite brigde6-hole-ferrite bead共模铁氧体桥6-孔-铁氧体磁珠WE-SL seriesWE-CNSWWE-SLseriesWE-SL seriesWE-CNSWWE-FCWE-CMB NiZnSMTWE-LFSMDWrth Elektronik eiSos 2009 COMPETITORS&APPLICATIONS竞争对手

19、竞争对手&应用应用Wrth Elektronik eiSos 2009Common Mode Choke共模扼流圈Ask PM before offering报价前询问报价前询问PMPMcustomized parts定制品Wrth Elektronik eiSos 2009Common Mode Choke共模扼流圈Who to make Xref?谁来制成Xref?easy way 简单途径:If not in Alpha plan如果不在如果不在 AlphaplanAlphaplan系统系统 check the packaging first and look the our close

20、r boxcheck the currentcheck the impedance or inductance valuetake care of the differential mode impedance(bifilar or sectional winding)check the layout先核对包装然后看我们接近核对电流核对阻抗和电感值考虑不同阻抗模式(双绞线or分段绕法)核对布线 STRG+SHIFT+WWrth Elektronik eiSos 2009Common Mode Choke 共模扼流圈different definition for inductance and

21、curren t电感和电流的不同定义 WE-FC&EPCOS B82731Wrth Elektronik eiSos 2009Common Mode Choke 共模扼流圈different definition for inductance and current电感和电流的不同定义 WE-FC&EPCOS B82731L LminminLN+50%L mHeiSos Dfinition0,80,911,11,21,30,71,41,51,61,7Epcos Dfinition-30%Wrth Elektronik eiSos 2009Common Mode Choke Applicatio

22、ns 共模扼流圈的应用 fluorescent lamps low voltage halogen lamps LED荧光灯低压卤素灯LEDWrth Elektronik eiSos 2009Common Mode Choke Applications共模扼流圈的应用Switch mode power supplies Wall power adapter battery charger audio,video:TV,SAT-Receiver,DVD-Player notebooks PC power supplies,displays,printer开关电源电源适配器电池充电器声频,音频:电

23、视,SAT-接收机,DVD播放器笔记本个人电脑电源，显示器，打印机Wrth Elektronik eiSos 2009Competitors WE-LF 竞争对手WE-LFSchaffner:RNx14 RNx4EPCOS:B82721 B82724Kaschke:RDS18 RDS32VOGT:DK30 DK61HartuTalema:CABxx,CAVxx,CAXxRadiohm:42H17 42H/V32Wrth Elektronik eiSos 2009Competitors WE-LF SMD 竞争对手竞争对手 WE-LFSMDWE-LFSMDAPI Delevan:CM6296EPCOS:B82720-S2xxxVOGT:DP-F14Pulse:PE-5391xWrth Elektronik eiSos 2009Competitors WE-FC竞争对手WE-FCEPCOS:B82731M/HTDK:HF2316,HF2318 HF2022R,HF2018RPanasonic:Type 290,Type 200Murata:PLA10RDSchaffner:EH20,EV20VOGT:RK17Radiohm:42UxxV2Wrth Elektronik eiSos 2009Any question?our pmhotline will give you support