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Multifunction relay

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Multifunction relay

Block diagram

Overview

Our integrated circuits and reference designs help you design multifunction relays with protection, monitoring and diagnostic features integrating data acquisition, signal processing, protection algorithms, high- or low-speed communication, isolation and human machine interface (HMI) functionalities.

Design requirements

Innovative and highly-integrated multifunction relay designs often require:

  • Accurate measurement of alternating current (AC) and voltage inputs over a wide range.
  • Communication interfaces, including Ethernet copper/fiber 10/100/1000, USB and RS-485.
  • Efficient direct current (DC) supply using DC/DC converters with an integrated inductor and onboard power management.
  • HMI solutions for LCDs for graphic display and LEDs for diagnostics and status indication.
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Technical documentation

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Type Title Date
Application note Digital Filter Types in Delta-Sigma ADCs PDF | HTML 29 Jun 2018
Application note Principles of Data Acquisition and Conversion (Rev. A) PDF | HTML 28 Jun 2018
Application note Reduce Effects of Ext RC Filter on Gain Error and Drift in SAR ADC w/Int AFE (Rev. A) 25 Jul 2017
Technical articles 2-wire 4-20mA transmitters: Controlling 2-Wire Transmitter Outputs with Externally Powered Sources (Part 4) 24 Feb 2015
White paper Enabling and integrating wired & wireless technologies for grid interoperability 22 Mar 2019
Technical articles Power Tips: How to program PMBus Devices 21 Oct 2014
White paper Moving from conventional to intelligent substations 17 Jan 2019
Application note HSR/PRP Solutions on Sitara Processors for Grid Substation Communication 17 Apr 2018
Application note A Glossary of Analog-to-Digital Specifications and Performance Characteristics (Rev. B) 13 Sep 2019
Application note TI DSP Benchmarking 13 Jan 2016
Application note Low-Emission Designs With ISOW7841 Integrated Signal and Power Isolator (Rev. C) 11 May 2022
Application note Introduction to HVDC Architecture and Solutions for Control and Protection (Rev. B) PDF | HTML 11 May 2022
Technical articles The impact of voltage reference noise on delta-sigma ADC resolution 11 Dec 2015
Application note Reducing Phase Delay by Averaging on ADS8686S with Burst Sequencer Mode PDF | HTML 10 May 2022
Application note Expanding Analog Input Channels in Grid Applications (Using 16-Channel, 16-Bit, (Rev. A) 10 May 2022
Application note Electric Power System Coherent Sampling 08 Dec 2012
Technical articles Powering FPGAs – Improving undershoot of voltage regulators with asynchronous pulse injection 02 Feb 2018

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