24VDC 10A eFuse and Protection Circuit for Programmable Logic Controllers (PLC)


Design files


This sub system design shows an IC based implementation of  over voltage, over current, reverse current,  reverse polarity and miss wire protection which is more accurate, lower power and faster compared to fuses, PTCs and diodes. Programmable Logic Controller (PLC) I/O modules connected to a field power supply  benefit from protection on the 24V field input connectors as power supply faults or miss wiring might damage or cause the module to not operate correctly.

  • Short circuit protection
  • Over and under voltage protection
  • Reverse polarity protection
  • Miss wire and Reverse current protection
  • Surge protection (IEC61000-4-5)
  • This reference design is tested with HW and includes a design guide
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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.

TIDU415.PDF (3302 K)

Reference design overview and verified performance test data

TIDRA79.PDF (202 K)

Detailed schematic diagram for design layout and components

TIDRA80.PDF (214 K)

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

TIDRA81.PDF (142 K)

Detailed overview of design layout for component placement

TIDRA83.ZIP (391 K)

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

TIDC577.ZIP (198 K)

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

TIDRA82.PDF (764 K)

PCB layer plot file used for generating PCB design layout


Includes TI products in the design and potential alternatives.

Ideal diode/ORing controllers

LM5050-15-V to 75-V 400-uA IQ ORing FET controller

Data sheet: PDF | HTML
N-channel MOSFETs

CSD18532Q5B60-V, N channel NexFET™ power MOSFET, single SON 5 mm x 6 mm, 3.2 mOhm

Data sheet: PDF | HTML
eFuses & hot swap controllers

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

Data sheet: PDF

Technical documentation

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Type Title Date
* Design guide 24-V DC 10-A eFuse and Protection Circuit for Programmable Logic Controllers Jun. 20, 2014

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