1W Small Form Factor Power Supply with Isolated Dual Output for PLC I/O Modules
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Key Document


This reference design is a 1W power supply with dual isolated outputs for space constrained applications. With  24V and 3.3V isolated outputs, this design was created specifcally to power Programmable Logic Controller (PLC) I/O modules in a factory automation setting. This design was created to comply with IEC 61010-1, which in turn will provide a designer faster time to market with their own design.

  • Designed to comply with IEC61010-1
  • Small form factor for space constraint I/O cards: 51 x 40 x 5.97 mm (L x W x H)
  • Up to 87% efficiency for low heat dissipation in small plastic housings
  • A complete and cost effective design for I/O cards
  • ±10% output voltage accuracy
  • Wide input voltage range: 17V to 36V (24VNOM)

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Schematic/Block Diagram

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Design Files

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TI Devices (1)

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Part Number Name Product Family Sample & Buy 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

CAD/CAE symbols

Part # Package | Pins CAD File (.bxl) STEP Model (.stp)
LM5017 Download Download
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Technical documentation

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User guide (1)
Title Type Size (KB) Date
PDF 3264 12 Jun 2015
Design files (3)
Title Type Size (KB) Date
ZIP 32 25 Mar 2014
PDF 71 25 Mar 2014
PDF 76 25 Mar 2014
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Reference Designs (3)

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