Allegro-霍尔电流传感器资料-ppt课件.ppt

1、Formation Electricfil18.05.2004Allegro Hall Effect Current SensorsHigh-Performance Power ICs and Hall-Effect Sensors1PPT课件Core-less SOIC Packages with 1 mW ResistanceIntegrated Core ACS Package with 100 mW Resistance m Allegro proprietary integrated packages provide several advantages over classic H

2、all effect current sensor, current transformer and sense resistor op-amp solutions.1mm thin “KT” package for using a ferromagnetic core in through hole configurations2PPT课件VH = Hall resultant voltageI = biasing currentB = flux density d = plate thicknesse = electron chargen = charge carrier densityV

3、H = -I B / d n eHall PlateConductormHall sensing technology works down to DC frequency CTs not capable of sensing DC current3PPT课件Strong Magnetic Coupling Hall element is in close proximity to primary conductor Provides improved signal and signal to noise ratio for improved resolution in current mea

4、surement over classic Hall sensing solutions. Provides a more accurate open loop sensor4PPT课件Electrical Galvanic Isolation All Allegro flip-chip surface mount packages provide some level of galvanic isolation Provides high-side sensing without the need for large current transformers in line-powered

5、applications Allows high-side sensing without the need for expensive high common-mode op-amps in applications that employ sense resistor op-amp solutions above 12-24V5PPT课件Low Resistance Fully Integrated Conductor Significant power savings compared to sense resistor and op-amp solutions. Single chip

6、 solutions consume minimal PCB area and clearance for compact designs over CTs and sense resistor op-amp configurations.Hall Effect Sensing Advantage in Package Hall sensors provide immunity to the error associated with changing sense resistance values over temperature The magnetic signal is a funct

7、ion of the magnitude of the current flowing and not a function of the conductor resistance.6PPT课件Big Thermal Performance in Small PackagesCapable of 40 A continuous current at 85C ambient temperatureOver current capable to 200Amps for up to 20ms (single event pulse) 1.0m conductor resistanceSOIC8, Q

8、SOP24, and SOIC16 packages have similar performance due to their nearly equivalent conductor resistance.ACS709QSOP24 PackageQSOP24 Package Thermal PerformanceCapable of 200 A continuous current at 85C ambient temperatureOver current capable to 1200Amps for up to 10ms (passed 10 pulses)Thermal perfor

9、mance is excellent due to the 100m conductor resistanceHigh Current CB Package Thermal PerformanceACS758CB Package7PPT课件mLow noise outputs provide high resolution sensing of load currentsmLowest noise spectral density of any Hall sensor on the market todaymResolution Error: 0.5% of full scale curren

10、t for 120 kHz bandwidthmResponse time of 4uS for short circuit detection and IGBT protectionACS7588PPT课件m2100VRMS Isolation: UL/TUV 60950-1 certifiedmHigh sensitivity range: 66 185 mV/AmFilter PinmBi-directional and Uni-directional versionsmTypical error: +/-5% over temperaturemAutomotive grade smal

11、l SOIC8 packageDeviceVcc PackageCurrent RangeSensitivity at 5VLinear RangeBi or Uni DirectionalBandwidth Auto / Non-AutoFault OutputMajor applicationsACS712ACS7145VSOIC8+/-5A185mV/A+/-11ABi-directional80KHz712 Non-Auto714 AutoNoUPS+/-20A100mV/A+/-20APower Supplies+/-30A66mV/A+/-30AMotor InvertorsACS

12、713ACS7155VSOIC820A185mV/A20AUni-directional80KHz713 Non-Auto715 AutoNoEPB / VVT Motors30A133mV/A30AHVAC Fan9PPT课件Allegro Confidential InformationACS710 Features and Benefitsm3000 VRMS galvanic isolation: UL1577 CertifiedmOvercurrent Fault Pin: Level set by external resister divider Fault signal res

13、ponse time 2 s for short circuit protection Fault latch delay controlled by external R and Cm2% typical error over 0C to 125C range m3.0 V to 5.5 V, single supply operation DeviceVccPackageCurrent RangeSensitivity at 5VLinear RangeBi or Uni DirectionalBandwidthAuto / Non-AutoFault OutputMajor applic

14、ationsACS7103.3 - 5VSOIC16+/-6A*100mV/A+/-13ABi-directional(Uni Available)120KHzNon-AutoYesUPS+/-12A56mV/A+/-37.5APower Supply Invertors+/-25A28mV/A+/-75ASolar Invertors*+/-6Amp Current Range Sensitivity is at 3.3V10PPT课件Allegro Confidential InformationACS709 Features and Benefitsm2100 VRMS galvanic

15、 isolation: UL1577 CertifiedmOvercurrent Fault Pin Same as ACS710m3% typical error over -40C to 150C range m3.0 V to 5.5 V, single supply operation mAutomotive grade small footprint QSOP24 packageDeviceVccPackageCurrent RangeSensitivity at 5VLinear RangeBi or Uni DirectionalBandwidthAuto / Non-AutoF

16、ault OutputMajor applicationsACS7095VQSOP24+/-20A56mV/A+/-37.5ABi-directional(Uni Available)120KHzAutoYesEPS+/-35A28mV/A+/-75AEHPS / EPB11PPT课件ACS711 Features and BenefitsmLow Side Sensor for 100V applicationsmOvercurrent Fault Output at 100% of full scale currentm4% typical error over -40C to 125C

17、range m100KHz bandwidthm3.0 V to 5.5 V, single supply operation mAutomotive grade SOIC8 packageDeviceVccPackageCurrent RangeSensitivity at 3.3VLinear RangeBi or Uni DirectionalBandwidthAuto / Non-AutoFault OutputMajor applicationsACS711 3.3VSOIC8QFN+/-12A110mV/A+/-12ABi-directional(Uni Available)100

18、KHzBothAuto to 125C OnlyYesCar and Home AudioPower Window Motors+/-25A55mV/A+/-25A12PPT课件mSmall physical size (7mm nominal height)m100Ohm integrated conductor for low power lossm3000 VRMS galvanic isolationm3.0 to 5.5V single supply isolationmAccuracy +/-4% from -40 to 150C temp rangemBi-directional

19、 and Uni-directional options availablemAutomotive grade Allegro proprietary package13PPT课件Allegro Confidential InformationHigh Current CB Package Thermal Performance14PPT课件Allegros high bandwidth current sensor SIP: the A136x family1 mm “thin”package forenhancedaccuracy15PPT课件mFast response time & r

20、esolution 120 kHz nominal bandwidth (-3dB) 4 us typical response time (tPROP + tRISE) 5.5 mGp-p /(Hz) output noise densitymHighly programmable via EEPROM memory Finer resolution sensitivity & offset trim (18 total bits) Sensitivity range of 0.7 to 14.5 mV/G ( 0.5% steps) Non-linear sensitivity and o

21、ffset trim over temperature enables a new level of output accuracy30 bits for offset30 bits for sensitivityAll temperature coefficients factory trimmed at Allegros facility Polarity bit for redundant systemsmRatiometric for use in 5 V regulated systemsmIDDQ and SCAN provide high digital reliabilitym

22、7KVHBM ESD performancemTypical Error: +/- 0.5% error, 0 to 100CNext Generation High Bandwidth Current Sensor ICA136316PPT课件mPiecewise Linear Temperature CompensationmTemperature performance within temperature range can be linearly compensate both the zero gauss (Qvo) output and the sensitivity (Gain

23、) of the A1363 mTarget accuracy is +/-3% over tempNext Generation High Bandwidth Current Sensor ICA136317PPT课件New Temp Compensation Trim Methodology Improves AccuracyAllegro Proprietary and Confidential InformationTotal Error vs. Temp.ACS710+/-6%-40 to 125CCurrentUp to 50AUp to 200AAbove 200A711 QFN

24、+/-6-8%-40 to 125CACS711+/-6-8%-40 to 125CACS763/4 +/-30 to 60CACS712+/-6%-40 to 150CACS722+/-4%-40 to 150CACS726+/-4%-40 to 150CACS758 +/-6%-40 to 150C ACS770+/-4%+/-2%A1360/1/2+/-6-8% depending on CAS-40 to 150CA1363+/-4%+/-2%+/-8%+/-6%+/-4%+/-2%With ColdTestingWith ColdTestingNew TC Trim Raises A

25、ccuracy Across the Entire Portfolio-40 to 150C 10AACS709+/-6%-40 to 150C18PPT课件Product Features:Provides 3.3V operation SOIC8 packaged offering for use with 3.3 V micros.Piecewise linear TC for 3% error -20 to 150 degrees C.+/-5A and Uni-directional 10A current outputs for use in lower current appli

26、cations such as appliances.Enhances Allegros low current portfolio.Higher currents will be possible if needed up to 50AConductor resistance of 0.75mOhm increases thermal capability during over-current transient events, and reduces power loss. Creepage increased to 4mm from 2mmBandwidth selection pin

27、 for 80KHz or 20Khz.Pin to Vcc connection for 80KHz and GND connection for 20KHz. Provides easy option for reducing noise in lower bandwidth systems.UL1577 certification will provide single protection with same 2100VRMS isolation as existing ACS712 package, but with higher working voltage.Will not b

28、e UL60950-1 edition 2 qualified. No reinforced isolation value.Program kicked off, no official schedule. Estimated first samples March/April 2012. RTM: Sept/Oct 2012.19PPT课件Features and Benefits: mFully Differential ArchitecturemExternally adjustable gain and bandwidth using simple RC networks.mPate

29、nted integrated digital temperature compensation circuitry for Qvo and Sens. mSmall footprint, low profile QSOP24 package suitable for space-constrained applications m3.3V single supply operation mFactory-trimmed sensitivity and quiescent output voltage for improved accuracy20PPT课件Product Features:q

30、Higher accuracy from piecewise linear temperature compensation will drastically improve accuracy over temperature. q Cold testing will be avoided through characterization and blind adjustment of -40C boundary.q If necessary a KC cold test could be implemented for demanding applications with signific

31、ant price adder.q Device target accuracy +/-3% in production including all errors. Typical error of +/-0.5% over temperatureq Vcc capable to 5V based on A1363qUL60950-1 Edition 2 compliant to 450VRMS reinforced working voltage and 700VRMS basic working voltage. (By Jan 2012 ACS758 will have the same

32、 rating!)Can Survive 4800VRMS for 60Sec.Rated to 3000VRMS21PPT课件ACS710 ACS716q The ACS710 part numbers: ACS710KLATR-12CB-T and -25CB-T will have 3.3V programmed and tested equivalent parts called the ACS716KLATR-12CB-T and -25CB-T.q The ACS710KLATR-6BB-T device is already rated at 3.3V. I would like

33、 to convert that to the ACS716 if possible. Inputs?q Creating CAS and Oracle Items now and will make a datasheet and release to market as soon as possible. Estimated completion Nov / Dec. 2011.ACS758 ACS759q The ACS759 is the 3.3V programmed ACS758. All CASs and Oracle Items exist for the ACS759 PFF

34、 50-200A options of the device.q The ACS758 3.3V activity is extensive because of the characterization and number of parts to convert. This will be an official kickoff project with expected RTM of Nov / Dec 2011q By year end the isolation will be compatible with UL60950-1 Ed. 2 to the following volt

35、age ratings.Can Survive 4800VRMS for 60Sec.Rated to 3000VRMS22PPT课件2. Trend: Acceptance in small & large appliances, industrial motors, lighting systems, and power supplies3. Trend: Increased demand for power monitoring in server rooms4. Trend: Energy efficiency demands create demand in UPS, smart m

36、etering, appliance and power supply applications 1 2 3 4 5 6 75. Trend: Increased demand for lower power motor control solutions, potential use in smart metering systemsA136X/A135X200A +Hybridvehicles:DC/DCInvertersBatteryCurrentACS712/35 to 30 AIndustrialMotors,Lighting,PowerSuppliesServer SupplyPr

37、otectionACS76120 AACS75650 to 100 AUPS, HVAC, Inverters, PowerSuppliesACS709/7105 to 45 AACS75850 to 200 AACS7115 to 30 ALow Voltage White Goods Applications, Audio System Protection6. Trend: Demand for current sensing in hybrid vehicles and electric bikes is on the rise, interest in higher power UP

38、S and power supplies7. Trend: Increased power savings demands for low side sensing applications in appliance and audio applicationsPower SupplyProtection,SmartMetering,MotorControlAutomotiveDC/DC &Inverters,UPS,Electric Bikes1 & 6. Trend: Increased electronic content in vehicles, and increased demand for hybrid vehicles, should result in growth23PPT课件