1W Isolated Power Supply with Planar Transformer Reference Design

(ACTIVE) TIDA-00688

Description & Features

Technical Documents

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Key Document

Description

Isolated power supply is a main requirement in every industrial application where modules are connected to Programmable Logic Controllers (PLC). Often, for those PLC modules there is only limited space available, making the inclusion of large isolation transformers more difficult. The TIDA-00688 reference design provides isolated ±15V and 5V outputs in a very thin form factor with only 2.2mm height on each side of the printed circuit board (PCB). This is achieved by integrating the transformer directly into the PCB. Furthermore, the TI Design can be operated off a wide input voltage range of 14V - 36V and is all included in a small 25.4mm * 43.8mm form factor.

Features
  • Integrated Planar Transformer
  • Wide Input Voltage Range 14V to 36V (24V NOM)
  • Three Isolated Outputs (1.7mm clearance prim-sec coils, 0.71mm prepreg (type 7628) prim-sec coils)
    • 15V Isolated, 30mA, Ultra-Low Noise
    • -15V Isolated, 30mA, Ultra-Low Noise
    • 5V Isolated, 40mA
  • Ultra-Thin Profile < 2.2mm
  • 6mm thickness side to side (defined by ferrite)

 


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Schematic/Block Diagram

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Design Guide

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Design Files

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Bill of Materials (BOM)

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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  Step-down (buck)  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  Vin 3V to 36V, 150mA, 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
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TPS7A49 Download Download
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Technical Documents

View the Important Notice for TI Designs covering authorized use, intellectual property matters and disclaimers.

Application notes (1)
Title Abstract Type Size (KB) Date Views
PDF 870 17 Dec 2014 355
User guides (1)
Title Abstract Type Size (KB) Date Views TI Recommends
PDF 1695 21 Jan 2016 39
Design files (6)
Title Abstract Type Size (KB) Date Views
ZIP 385 09 Dec 2015 13
ZIP 605 09 Dec 2015 11
PDF 1068 09 Dec 2015 6
PDF 139 09 Dec 2015 4
PDF 90 09 Dec 2015 7
PDF 359 09 Dec 2015 23
Related Tools & Software

Reference Designs  ( 2 )


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