8-Channel Digital Input Module for Programmable Logic Controllers (PLC)
TIDA-00017
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Key Document

Description

This TI Design provides a complete 8-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 thus reducing the time to market for customer. The design serializes 8 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 TI’s 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 15kV ESD protection
  • User-programmable current limit of 2mA 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 x 50x 10mm (LxWxH)

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Schematic/Block Diagram

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Design Files

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TI Devices (7)

Order samples, get tools and find more information on the TI products in this reference design.

Part Number Name Product Family Sample & Buy Design Kits & Evaluation Modules
CSD18537NQ5A  60V, N ch NexFET MOSFET™, single SON5x6, 13mOhm  MOSFETs  Sample & Buy View Design Kits & Evaluation Modules
ISO7131CC  4242-VPK Small-Footprint and Low-Power 2/1 Triple Channel Digital Isolator with Noise Filter  Isolation  Sample & Buy View Design Kits & Evaluation Modules
ISO7141CC  4242-VPK Small-Footprint and Low-Power 3/1 Quad Channel Digital Isolator with Noise Filter  Isolation  Sample & Buy View Design Kits & Evaluation Modules
LM5017  7.5-100V Wide Vin, 600mA Constant On-Time Synchronous Buck Regulator  Offline & isolated DC/DC controllers & converters  Sample & Buy View Design Kits & Evaluation Modules
LM5069  Positive High Voltage Hot Swap / Inrush Current Controller with Power Limiting  Power switches  Sample & Buy View Design Kits & Evaluation Modules
SN65HVS885  8-input, wide 0- to 34-V digital-input serializer with 5-V VCC for industrial digital inputs  Interface  Sample & Buy View Design Kits & Evaluation Modules
TPS715  50 mA, 24 V, 3.2-μA Iq, Low-Dropout Linear Regulator in SC70 Package  Power management  Sample & Buy View Design Kits & Evaluation Modules

CAD/CAE symbols

Part # Package | Pins CAD File (.bxl) STEP Model (.stp)
CSD18537NQ5A VSONP (DQJ)| 8 Download
ISO7131CC Download Download
ISO7141CC Download Download
LM5017 Download Download
Download Download
LM5069 Download Download
SN65HVS885 Download -
TPS715 Download Download

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Technical Documents

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User guides (1)
Title Type Size (KB) Date
PDF 1983 27 Feb 2014
Selection guides (1)
Title Type Size (KB) Date
PDF 3478 06 Mar 2015
Design files (4)
Title Type Size (KB) Date
ZIP 1361 04 Mar 2014
PDF 67 04 Mar 2014
ZIP 508 21 Jan 2014
PDF 292 21 Jan 2014
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TI Design Network  ( 1 )

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Name Part Number Company Headquarters Location Tool Type
BeagleBone Black Development Board  BEAGLEBK  BeagleBoard.org Foundation     Evaluation Modules & Boards 

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