Isolated Current and Voltage Measurement Using …
FILTER FERRITE BEADGNDR = 3m Ohm+5V_ISO1GND_ISO1GND_ISO4CH 1MSP430FR5869CH 2CH 3CH 4CH 5CH 612 BIT SARIRIYIBVRVYVBUARTINTERFACE+EXPANSION I/OJTAGINTERFACELED(x2)COMMS/ IO(Connector)JTAG(Connector)LEDVDD_2FILT ER FERRITE BEADAMC1100GAIN 8(Iso. Amp)ISO POWER 1+5V_ISO1-5V_ISO1GND_ISO1ISO POWER 2+5V_ISO2-5V_ISO2GND_ISO2ISO POWER 3+5V_ISO3-5V_ISO3GND_ISO3VDD_2 = +5V_ISO4JUMPER (MSP430 [ ] or ADS131 [ ] EVM INTERFACE)ISO POWER 4+5V_ISO4-5V_ISO4GND_ISO4GNDVDD_2+5V_ISO 1-5V_ISO1+/- 250 mVAMC1100GAIN 8(Iso. Amp)AMC1100GAIN 8(Iso. Amp)AMC1100GAIN 8(Iso. Amp)110/ 230VTERMINALBLOCKTERMINALBLOCKTERMINALBL OCKR = MOhmR = KOhmCH 1ADS131E08-EVM-PDKCH 2CH 3CH 4CH 5CH 624 BIT Delta-SigmaVDD_2 = 1OPTION 2NOTE: FILTER, FERRITE BEAD are optionalSN6501(Transformer Driver)5V_CNTLGNDGND_ISOTLV70450( LDO)TPS7A3001( LDO)+5V_ISO-5V_ISOISO POWERWurth750342354( : )VDD_25V_CNTLTPS7A6533( LDO)GNDPOWER VTI DesignsIsolatedCurrentand VoltageMeasurementUsingFullyDifferential IsolationAmplifierDesignOverviewDesignFe aturesThis TI designdemonstratesusingthe AMC1100-Voltageand CurrentMeasurementUsing:basedAFEto measurevoltageand Channel-IsolatedCurrentInputsand Groupdesigndetailsmeasuringvoltageinputs in an input-to-IsolatedVoltageInputsBasedon AMC1100Fixed-outputisolationconfiguratio nand measuringcurrentGain,FullyDifferentialAm plifiersinputsin a channel-to-channelisolationconfiguration .
System Description www.ti.com 1 System Description Grid infrastructure applications include protection, control, and monitoring systems. Some of the grid infrastructure end applications are multifunction protection relays, transformer and motor monitoring
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