Isolated DC/DC Power Supply for PLC Analog Input and Output Module Reference Design


Design files


TIDA-00401 is an isolated DC/DC turn-key reference design. It was designed for a 10-W isolated power supply with wide input voltage range, no opto-coupler feedback and low number of external components. The Fly-Buck™ topology is superior to a flyback design. The single-side populated PCB board provides a convenient tool for evaluation and on-the-fly optimization of the design with adequate headers, jumpers and test points for applications like PLC analog input/output modules.

  • Isolated DC/DC power supply for 15-V to 36-V input and up to 10-W output power
  • Low quiescent current up to 20 mA
  • Open-loop, optocoupler-less design
  • Synchronization output and fixed switching frequency enable use in noise sensitive applications
  • Flexible configurable board enables easy evaluation and modification
  • Design guide provides detailed description and performance test data
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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.


Detailed schematic diagram for design layout and components


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


Detailed overview of design layout for component placement

TIDRFK3.ZIP (2038 K)

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


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


PCB layer plot file used for generating PCB design layout


Includes TI products in the design and potential alternatives.

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Linear & low-dropout (LDO) regulators

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Linear & low-dropout (LDO) regulators

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Technical documentation

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Type Title Date
* User guide 10-W, 15-V to 36-V Isolated Power Supply With ±15 V and 5 V Design Guide (Rev. B) Nov. 19, 2015

Related design resources

Reference designs

TIDA-00129 1W Small Form Factor Power Supply with Isolated Dual Output for PLC I/O Modules TIDA-00237 Ultra-Small 1W, 12V-36V Iso Power Supply for Analog Prog Logic Controller Modules Reference Design TIDA-00400 Isolated Power Supply for Programmable Logic Controller (PLC) IO Modules Reference Design

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