[PDF] TI Designs - Contactless and Precise AC-Current Sensing Using a





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High Accuracy AC Current Measurement Reference Design Using High Accuracy AC Current Measurement Reference Design Using

The TIDA-01063 is a reference design for current sensing using a PCB Rogowski coil sensor to achieve very good linearity for wide measurement range at a very 



Chapter Seven - ALTERNATING CURRENT Chapter Seven - ALTERNATING CURRENT

Such a voltage is called alternating voltage (ac voltage) and the current driven by it in a circuit is called the alternating current (ac current)*. Today 



TI Designs - Three-Phase AC Current Measurement Using Current TI Designs - Three-Phase AC Current Measurement Using Current

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TI Designs - Contactless and Precise AC-Current Sensing Using a

When this improvement is achieved then a Hall Sensor and analog output can be used to indicate the strength of the AC current proportional to the Hall Sensor 



TA138 200 A AC Current Clamp - OPERATING INSTRUCTIONS

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High Accuracy AC Current Measurement Reference Design Using

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TI Designs - Contactless and Precise AC-Current Sensing Using a

When this improvement is achieved then a Hall Sensor and analog output can be used to indicate the strength of the AC current proportional to the Hall Sensor 



Chapter Seven - ALTERNATING CURRENT

the current driven by it in a circuit is called the alternating current (ac current)*. Today most of the electrical devices we use require ac voltage.

TPS7A1633

(LDO)

LP2985-33

(LDO)

TPD3E001

(ESD)USB

MSP430F5529

(MCU)

LP2985-33

(LDO)

LP2985-33

(LDO)

DRV5053

Flux

Concentrator

TMP103

(Temp Sensor)

Display

3.3 V 3.3 V

Source of power

can be

USB power or a

DC-24V3.3 V can be

Generated from

either USB or

24-V DC input24 V

AC Current Flowing in Wire Under Test (A) [RMS]

A C C urrent M easured by H all S ensor (A ) [R M S ]0246810 120 2 4 6 8 1012
D001

TIDesignsDesignFeaturesTIDesignsprovidethefoundationthatyouneedThisreferencedesignforcontactlessandpreciseAC-includingmethodology,testinganddesignfilestocurrentsensingusingaHallSensorsubsystemquicklyevaluateandcustomizethesystem.TIDesignsenablesACcurrentmeasurementswhilemaintaininghelpyouaccelerateyourtimetomarket.theinsulationaroundthewire.•ContactlessProximityCurrentSensingforAC,DesignResources3-PhaseInputCurrents•MaximumMeasuredErrorLessthan5%from1-AToolFolderContainingDesignFilesTIDA-00218to10-ARMSDRV5053ProductFolder•FluxConcentratorasDescribedinThisDesignMSP430F5529ProductFolderImprovestheMagneticFluxDensitybyaFactorofLP2985-33ProductFolder6(15dB)TPS7A1633ProductFolder•OnlySingle-PointGainCorrectionatMaximumTMP103ProductFolderCurrentRange - Second-OrderCurveFitTPD3E001ProductFolderImplementedInFirmware•MaximumCurrentthatCanBeSensedCanBeAdaptedbyChangingFluxConcentratorDesignFeaturedApplications•BuildingAutomation•CircuitBreakers•ElectricalPanels•ControlPanelASKOurE2EExpertsWEBENCH®CalculatorToolsAnIMPORTANTNOTICEattheendofthisTIreferencedesignaddressesauthorizeduse,intellectualpropertymattersandotherimportantdisclaimersandinformation.PowerPADisatrademarkofTexasInstruments.SMBusisatrademarkofIntel.Allothertrademarksarethepropertyoftheirrespectiveowners.1TIDU522A-October2014-RevisedFebruary2015ContactlessandPreciseAC-CurrentSensingUsingaHallSensorSubmitDocumentationFeedbackCopyright©2014-2015,TexasInstrumentsIncorporated

TPS7A1633

(LDO)

LP2985-33

(LDO)

TPD3E001

(ESD)USB

MSP430F5529

(MCU)

LP2985-33

(LDO)

LP2985-33

(LDO)

DRV5053

Flux

Concentrator

TMP103

(Temp Sensor)

Display

3.3 V 3.3 V

Source of power

can be

USB power or a

DC-24V3.3 V can be

Generated from

either USB or

24-V DC input24 V

Temperature

CompensationBias

VCC OUT GND

2.5 ! 38 V

CVCC

Output

Driver

ROUT (Equivalent)

Offset Cancel

Regulated Supply

Optional RC Filtering

COUT (Optional)

Hall Element

Unified

Clock

System

128KB
96KB
64KB
32KB
Flash

8KB+2KB

6KB+2KB

4KB+2KB

RAM MCLK ACLK SMCLK

I/O Ports

P1/P2

2×8 I/Os

Interrupt

& Wakeup PA

1×16 I/Os

CPUXV2

and

Working

Registers

EEM (L: 8+2)

XINXOUT

JTAG/

Interface

SBW

PA PB PC PD

DMA

3 Channel

XT2IN

XT OUT2Power

Management

LDO SVM/

BrownoutSVSSYS

Watchdog

Port Map

Control

(P4)I/O Ports P3/P4

2×8 I/Os

PB

1×16 I/OsI/O Ports

P5/P6

2×8 I/Os

PC

1×16 I/OsI/O Ports

P7/P8

1×8 I/Os

1 PD

1×11 I/Os×3 I/OsFull-speed

USB

USB-PHY

USB-LDO

USB-PLL

MPY32 TA0

Timer_A

5 CC

RegistersTA1

Timer_A

3 CC

RegistersTB0

Timer_B

7 CC

Registers

RTC_ACRC16

USCI0,1

USCI_Ax:

UART,

IrDA, SPI

USCI_Bx:

SPI, I2CADC12_A

200 KSPS

16 Channels

(14 ext/2 int)

Autoscan12 Bit

DVCC DVSSAVCCAVSS

P1.xP2.xP3.xP4.xP5.xP6.xDP,DM,PURRST/NMI

TA2

Timer_A

3 CC

RegistersREF

VCORE MAB MDB

P7.xP8.x

COMP_B

12 Channels

VIN VOUT

ON/OFF

Overcurrent/

Overtemperature

Protection

VREF1.23 V!

BYPASS

UVLO

Thermal

Shutdown

Current

Limit

Enable

Error AmpIN EN OUT

FBPass

Device

Power Good

Control

DELAY PG MCU

TMP103A TMP103B TMP103CSCL SCL SCLSDA SDA SDAOut

IO V+V+ IO3

GNDIO2IO1V

CC

µ I B2 r u?u S u

VCC1OUT3

GND2U4DRV5053VAQLPGRQ1

+3P3V GND

ADC_A0

GND

1.50kR10

0.47µFC34

1.59 .0?33.21 .127 11.33 .44? ?.?0 .2?0 5.4? .215 5.87 .231 3.30 .130 .144.5501.380.350 .120 .100.868 .039

147.00°

.252 .198 .132

90.00°

2n1RMS xn? ?

DisplayUSB

ConnectorDC Input

Connector

JTAG Connector for

MSP430 Programming

Opening for

AC Wire

Under TestHall SensorFlux

Concentrator

Current Probe

AC?current-carrying?wireunder?test ! inside?the

flux?concentrator?opening

Hall Sensor DRV5053 Output (mV)

AC Current Flowing in Wire Under Test (A)

050100150200 2500

2 4 6 8 1012
D002

Board 5

Board 6

Board 7

Baseline (Board 6)

(1)

7.550.490.513.67%

11.780.750.750.01%

15.9510.991.5%

33.3221.952.03%

51.762.982.941.21%

73.124.014.040.83%

93.984.965.072.17%

138.996.987.111.92%

211.86109.950.49%

quotesdbs_dbs20.pdfusesText_26
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