TIDA-00555 Reference Design

Texas Instruments

Isolated Current & Voltage Measurement Using Fully Differential Isolation Amplifier Reference Design

Description

TIDA-00555 demonstrates the use of AMC1100: a fully differential isolation amplifier: as an analog front end to measure voltage and current. It demonstrates measurement of voltage inputs in an input-to-output isolation configuration and current inputs in a channel-to-channel isolation configuration. It includes power isolation: which makes capable of measuring isolated voltages and currents. This design can be used in applications that require replacing current transformers (CTs) with shunts. Shunts and potential dividers are provided onboard to directly connect current and voltage inputs.

Features
  • Onboard shunt and potential divider provided for easier interfaceInput signal conditioned using isolation amplifier (fully differential) with fixed gain: high common-mode rejection ratio and very low nonlinearityThree current input channels are galvanically isolatedThree voltage input channels share a single isolated power supplyCurrent accuracy performance Voltage accuracy performance
Applications
  • Three phase UPS
  • Power transfer units
  • Central inverter
  • Multifunction relay
  • Power conversion system (PCS)
  • Remote power distribution automation
  • Railway auxiliary power
  • Railway electric propulsion
  • AC analog input module
  • Compact relay
  • Contractor circuit
  • Substation automation
  • Three phase UPS control & communication module
  • Power quality meter
Product Categories
  • Isolation

Parts

Part Number Name Companion Part
AMC1100 AMC1100 Buy Datasheet
SN6501 SN6501 Buy Datasheet
TPS7A6533-Q1 TPS7A6533-Q1 Buy Datasheet

Bill Of Materials

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Schematic

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Test Data

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Other Documents

Title Updated Type Size (KB)
TIDA-00555 CAD Files 22 Jun 2015 ZIP 2468
TIDA-00555 PCB 22 Jun 2015 PDF 5498
TIDA-00555 Assembly Files 22 Jun 2015 ZIP 321
TIDA-00555 BOM 22 Jun 2015 PDF 236
TIDA-00555 Schematic 22 Jun 2015 PDF 1662
TIDA-00555 Gerber 22 Jun 2015 ZIP 2072