High Speed Digital Output PLC Module Reference Design
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Key Document


This high speed digital output module TI Design for programmable logic controllers (PLCs) illustrates the design of low-cost, simple high speed single-ended digital output module using standard low side driver and backplane powered using isolated power stage. High speed digital output modules are required for motor control and positioning application.

  • 4 high speed digital outputs
  • External load power
  • Single-ended outputs working up to : 500 kHz with 5 V field power, 100 kHz with 24 V filed power
  • 210 mW power consumption from backplane isolated power stage
  • Less than 100 ns transition time with 15 m cable
  • 300 mW power consumption per load for 5 V supply, and 44 Ω load

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Schematic/Block Diagram

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Design Guide

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Design Files

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TI Devices (4)

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Part Number Name Product Family Sample & Buy Design Kits & Evaluation Modules
DRV8803  60-V, 2.3-A, quad low-side motor driver with PWM control  Motor drivers  Sample & Buy View Design Kits & Evaluation Modules
ISO7140CC  Quad-channel, 4/0, 50-Mbps digital isolator  Isolation  Sample & Buy View Design Kits & Evaluation Modules
LM2765  50kHz switched capacitor voltage converter  DC/DC switching regulators  Sample & Buy Not Available
SN6501  Low-noise, 350-mA, 410-kHz transformer driver for isolated power supplies  Power for signal isolators  Sample & Buy View Design Kits & Evaluation Modules

CAD/CAE symbols

Part # Package | Pins CAD File (.bxl) STEP Model (.stp)
DRV8803 Download Download
Download Download
ISO7140CC Download Download
LM2765 Download
SN6501 Download Download

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Technical documentation

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User guide (1)
Title Type Size (KB) Date
PDF 1381 28 Sep 2016
Design files (7)
Title Type Size (KB) Date
ZIP 275 08 Aug 2016
ZIP 1357 08 Aug 2016
PDF 2755 08 Aug 2016
PDF 1419 08 Aug 2016
PDF 314 08 Aug 2016
PDF 64 08 Aug 2016
PDF 554 08 Aug 2016

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