非接触式 电流传感器应用

Melexis“霍尔”ghtsReserved非接触式电流传感器dSystems.AllRigctronicIntegratedMelexisMicroelecRobertRacz–[e-mail]©Copyrightoeaco@eesco产品线经理Smallthingsmakeabigdifference.“非接触式”电流传感传统霍尔三轴（Tria⊗is）霍尔ghtsReserved传统霍尔三轴（Tria⊗is）霍尔•开环电流传感器dSystems.AllRigctronicIntegratedVoutl0MelexisMicroelec传统霍尔器件带集磁片（IMC）CMOS霍尔芯片SO8封装©CopyrightI电流载体•带集磁片（IMC）CMOS霍尔芯片,SO-8封装•检测电流产生的磁场Tria⊗is=集磁片IMCSmallthingsmakeabigdifference.传统电流传感器开环电流传感器OpenLoopCurrentSensor:Non-linearityghtsReserved特性Airgap:B≈I*μ0/l0Vout=S*BppyduetoB-H-curveofcorematerial012-200-1000100200putsignal[V]dSystems.AllRig-AC/DC;带宽10-50kHz-精度3-5%-材料的非线性特性软磁材料-2-1current[A]outpctronicIntegrated-温度漂移软磁材料VoutMelexisMicroelec传统霍尔元件l0©Copyright传统霍尔元件I电流载体精度受限于软磁材料的特性（例如磁滞磁饱和现象）!Smallthingsmakeabigdifference.精度受限于软磁材料的特性（例如磁滞、磁饱和现象）!带集磁片的电流传感器电流传感器MLX91205μghtsReserved电流传感器905差分输出ampsIrB**20πμ≈VdSystems.AllRig差分输出23ffCSESAVV~IctronicIntegrated-101VoutdifBSENTRONSA-1VMelexisMicroelec-3-2-10-7.5-5-2.502.557.510I©Copyright磁场强度mT非接触式、低成本、开环、SO8封装ISmallthingsmakeabigdifference.带集磁片的电流传感器MLX91205ghtsReservedMLX91205集磁片（IMC）=IntegratedMagneticConcentratordSystems.AllRigctronicIntegratedMelexisMicroelec©Copyright带双集磁片ASIC芯片的版图照片集磁片将水平方向的磁力线转换为垂直方向Smallthingsmakeabigdifference.带集磁片的电流传感器集磁片技术的优势ghtsReserved集磁片技术的优势对于芯片表面平行的磁场敏感dSystems.AllRig►应用中更容易装配►适合于将传感器与电流导体绑定一体的应用的磁场度磁场增益ctronicIntegrated更强的磁场强度(磁场增益)►更强的输出信号MelexisMicroelec►更低的电压漂移►更低的噪声©Copyright集磁片（IMC）提高了CMOS霍尔芯片的性能Smallthingsmakeabigdifference.Melexis三轴电流传感器总结带IMC的电流传感器(IMC=集磁片)-小尺寸、低成本-结构简单ghtsReserved结构简单-高带宽BW100kHz-可靠-设计高度模块化dSystems.AllRig-Pcb标准封装-非接入式、非接触式目标市场:几个Amps到1000Amps的电流监控ctronicIntegrated目标市场:几个Amps到1000Amps的电流监控。¾汽车(混合动力车,电力车)MelexisMicroelec¾电源转换器,逆变器,马达驱动¾电池监控¾过流保护,智能熔丝,..©Copyright非接触式,小尺寸,可靠且低成本方案!Smallthingsmakeabigdifference.市场/应用¾电池电流管理,电池充电器(混合动力车)ghtsReserved¾混合动力车的逆变器¾可再生能源(风能/太阳能转换模块¾电信、服务器等电源监控dSystems.AllRig电信、服务器等电源监控CurrentsensorsctronicIntegratedMelexisMicroelec©Copyright要求:电流范围=10–1000Amps反应时间10usec.,小尺寸可靠且低成本Smallthingsmakeabigdifference.小尺寸,可靠且低成本带IMC电流传感器的应用MLX91205-LBvs.MLX91205-HBMLX91205LBvs.MLX91205HB名称封装IMC形状饱和磁场强度敏感度IMC增益ghtsReserved名称封装IMC形状饱和磁场强度敏感度IMC增益LowfieldLBMLX10mT280V/T6dSystems.AllRig91205ABLHighfieldHB25mT100V/T3ctronicIntegratedMLX91205ABH25mT100V/T35VMelexisMicroelec5VLB:高敏感度=低电流©Copyright2.5V8mT25mTSmallthingsmakeabigdifference.0VMelexis电流传感器产品系列ghtsReserved芯片代号特性磁场范围[±mT]IMC样片时间MLX91206-PLPWM输出10w/September2009dSystems.AllRigPWM输出车用和工业等级MLX91206-PH25w/September2009MLX91207快速模拟输出车用和工业等级450w/oSeptember2009ctronicIntegratedMLX91207车用和工业等级450w/oSeptember2009MLX91206-LF快速模拟输出车用和工业等级10w/September2010MLX91206-HF25w/September2010MelexisMicroelec车用和等级MLX91206HF25w/September2010©CopyrightSmallthingsmakeabigdifference.CSA-1V/91205/91206/91207ƒCSA-1V(10mT)ghtsReservedƒCSA1V(10mT)ƒ工业等级(在25°C昀终测试)ƒ91205LB(10mT)and91205HB(25mT)车用等级生产线编程(在022°C温度下分别昀终测试)dSystems.AllRigƒ车用等级,生产线编程(在-40,25,125°C温度下分别昀终测试)ƒ特别适合内嵌传感器-不需要自我诊断功能和过压保护ƒ91206LF/HF(10/25mT:两个磁场等级/模拟或者PWM输出)ctronicIntegrated()ƒ车用等级(在-40,25,125°C温度下昀终测试)ƒ带EEPROM完全可编程,例如诊断,箝位等,ƒ版本1:PWM输出和温度输出-91206PWMƒ版本2:快速模拟输出和温度输出-91206MelexisMicroelecƒ典型应用:混合动力车中的逆变器或者独立传感器系统中的电池电流监控ƒ91207(不带IMC的快速传统霍尔传感器)ƒ车用等级模拟输出(在-40,25,125°C温度下昀终测试)©Copyrightƒ带EEPROM完全可编程Smallthingsmakeabigdifference.应用ghtsReservedƒMLX91207不带集磁片(IMC)ƒ用于传统结构的电流传感ƒMLX91205/MLX91206带集磁片(IMC)ƒ用于直接PCB或铜板装配dSystems.AllRigctronicIntegratedMelexisMicroelec©CopyrightSmallthingsmakeabigdifference.MLX91205/MLX91206应用:电流范围+/-200A电流范围+/200Aƒ2-DFEM仿真ghtsReserveddSystems.AllRigctronicIntegrated名称:200A演示板编号:001芯片:91205HF(20/25mT)屏蔽:ClosedU8mmMumetallMelexisMicroelec屏蔽:ClosedU8mm,Mumetall铜板:Copper,100x12x2mm•在2mm处的磁场强度=24T@200A©Copyright24mT@200A•流过200A电流时，屏蔽的磁场强度大约是0.48TSmallthingsmakeabigdifference.MLX91205/MLX91206应用:电流范围+/-200A电流范围+/200Aƒ逆变器应用演示板ghtsReserveddSystems.AllRigctronicIntegratedMelexisMicroelec©CopyrightSmallthingsmakeabigdifference.MLX91205/MLX91206应用:电流范围+/-200A电流范围+/200Aƒ非线性度vs.电流20002500040.5ghtsReserved100015002000mV]0.20.30.4FS]dSystems.AllRig-5000500SensorOutput[m-0.100.1Nonlinearity[%FctronicIntegrated-2000-1500-1000S-0.4-0.3-0.2NMelexisMicroelec-2500-250-200-150-100-50050100150200250Current[A]-0.591205HF[mV]NL[%FS]©Copyright91205HF[mV]NL[%FS]敏感度:10.0mV/A磁滞:2mV=0.2A=0.1%F.S非线性度±03%FSFS200ASmallthingsmakeabigdifference.非线性度:±0.3%FS,FS=200AMLX91205/MLX91206应用:电流范围+/-200A电流范围+/200Aƒ阶跃反应时间ƒ频响特性ghtsReserved11.11.2100110120dSystems.AllRig0.60.70.80.9doutput[]60708090e[deg]ctronicIntegrated0.20.30.40.5Normalize20304050PhaseMelexisMicroelec00.10.2100100010000100000Frequency[Hz]01020©CopyrightNormalisedoutput[]Phaseshift[deg]阶跃响应时间:10usec.频率范围:50-100kHzSmallthingsmakeabigdifference.频率范围:50-100kHz应用应用ghtsReserveddSystems.AllRigEMC保护推荐ctronicIntegratedMelexisMicroelec©CopyrightSmallthingsmakeabigdifference.MLX91205EMC保护推荐ghtsReserved差分输出dSystems.AllRig差分输出ctronicIntegratedMelexisMicroelec单端输出©CopyrightSmallthingsmakeabigdifference.MLX91205EMC保护推荐ghtsReserved在PCB版图上使用扩展的地线层dSystems.AllRigctronicIntegratedMelexisMicroelec©CopyrightSmallthingsmakeabigdifference.MLX9120