Ultra-Small 1W, 12V-36V Iso Power Supply for Analog Prog Logic Controller Modules Reference Design
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Key Document


Analog input and output modules are a standard component in Programmable Logic Controllera (PLC) or Distributed Control Systems (DCS). More channels per module and slimmer modules bring design challenges to the isolated power supply in those modules. Anyone facing those challenges will benefit from TIDA-00237, as the total design foot print is less than 2.54x2.54mm and less than 5mm height. It uses a fly-buck approach which means no optocoupler feedback with wide input voltage range of 12V-36V. The design provides +/-15V and 5V isolated, low noise outputs optimal for driving a data converter or analog front end.

  • Wide input voltage range: 12V to 36V (24VNOM)
  • 3 isolated outputs: 15VISO at 30mA ultra low noise, -15 VISO at 30mA ultra low noise, 5VISO at 40mA
  • ±2.5% output voltage accuracy
  • Ultra low profile < 5mm
  • IEC 61131-2 Compliant

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TI Devices (4)

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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
TPS62175  28V, 0.5A Step-Down Converter with SNOOZE Mode  Step-down (buck)  Sample & Buy View Design Kits & Evaluation Modules
TPS7A30  Vin -3V to -36V, -200mA, Ultra-Low-Noise, High-PSRR, Low-Dropout (LDO) Linear Regulator  Power management  Sample & Buy View Design Kits & Evaluation Modules
TPS7A49  Wide VIN, 150-mA, ultra-low-noise, high-PSRR low-dropout (LDO) linear regulator  Power management  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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TPS62175 Download Download
TPS7A30 Download Download
TPS7A49 Download Download
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Technical Documents

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User guides (1)
Title Type Size (KB) Date
PDF 824 09 Apr 2015
Design files (6)
Title Type Size (KB) Date
ZIP 291 17 Apr 2015
ZIP 633 17 Apr 2015
PDF 829 17 Apr 2015
PDF 138 17 Apr 2015
PDF 75 17 Apr 2015
PDF 350 17 Apr 2015
Related Tools & Software

Reference Designs  ( 3 )

Development Tools (1)

Name Part Number Tool Type
SPICE-based analog simulation program  TINA-TI  Circuit Design & Simulation 

Models (1)

Title Category Type Size (KB) Date Views
TIDA-00237 Simulation TINA-TI Reference Design ZIP 48 KB 12 Dec 2018

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