TIDA-00017

8-Channel Digital Input Module for Programmable Logic Controllers (PLC)

TIDA-00017

Design files

Overview

TIDA-00017 is an eight-channel digital input module front-end reference design for programmable logic controllers (PLCs). It is designed and fully tested to meet IEC61000-4 EMC and surge requirements for industrial automation systems to reduce time to market. The design serializes eight digital inputs, up to 34-volts each, minimizing the number of isolation channels and GPIO pins required of the host interface. Serialized data and control signals are galvanically isolated from the PLC using our high-speed, 4242-volt peak digital isolator technology. The design also includes an over-current protected, isolated power supply providing all necessary module voltages. Full documentation, test results, design files and necessary firmware are also available for this design.

Features
  • Fully tested to comply with IEC61000-4 for ESD, EFT and surge
  • Input protection circuitry and integrated 15-kV ESD protection
  • User-programmable current limit of 2 mA on inputs for overcurrent protection
  • Galvanic isolation on data and SPI data up to 4242-volts peak
  • Integrated over-temperature indicator to disconnect inputs when fault conditions occur
  • Slim form factor 95 mm x 50 mm x 10 mm (L x W x H)

A fully assembled board has been developed for testing and performance validation only, and is not available for sale.

Design files & products

Design files

Download ready-to-use system files to speed your design process.

TIDU196A.PDF (1983 K)

Reference design overview and verified performance test data

TIDR363.PDF (292 K)

Detailed schematic diagram for design layout and components

TIDR364B.PDF (67 K)

Complete listing of design components, reference designators, and manufacturers/part numbers

TIDC249B.ZIP (1361 K)

Files used for 3D models or 2D drawings of IC components

TIDC250.ZIP (508 K)

Design file that contains information on physical board layer of design PCB

Products

Includes TI products in the design and potential alternatives.

Multi-switch detection interface (MSDI) ICs

SN65HVS88534-V, 8-channel digital-input serializer for 5-V systems

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Digital isolators

ISO7131CCTriple-channel, 2/1, 50-Mbps digital isolator

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Digital isolators

ISO7141CCQuad-channel, 3/1, 50-Mbps digital isolator

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Isolated DC/DC converters & modules

LM50177.5-100V Wide Vin, 600mA Constant On-Time Synchronous Buck Regulator

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Linear & low-dropout (LDO) regulators

TPS71550-mA, 24-V, ultra-low-IQ, low-dropout voltage regulator

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N-channel MOSFETs

CSD18537NQ5A60-V, N channel NexFET™ power MOSFET, single SON 5 mm x 6 mm, 13 mOhm

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eFuses & hot swap controllers

LM50699-V to 80-V hot swap controller with power limiting

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Technical documentation

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* Design guide 8-Channel Digital Input Module for Programmable Logic Controllers Design Guide (Rev. A) Feb. 27, 2014

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