Isolated Power Supply for Programmable Logic Controller (PLC) IO Modules Reference Design
TIDA-00400
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Key Document

Description

The TIDA-00400 isolated power supply reference design provides multiple isolated outputs to supply the bias voltage needed in a Programmable Logic Controller (PLC) IO module. It generates 3 isolated outputs: ±15V@30mA and +5V@40mA. These voltage rails can satisfy most of the required voltage rails in the IO modules, such as the Op-Amp, DAC bias, RS-485 transmitter and digital isolator power supplies.

Features
  • Wide input voltage range: 18 to 30 V (24 VNOM)
  • Non-Isolated output: 3.3V with 50mA
  • Three isolated outputs:
    • +15V with 30mA
    • -15V with 30mA
    • +5V with 40mA
  • Small form factor for space constrained I/O cards 51 x 51 x 8 mm (L x W x H)
  • Primary-side regulation (no need for optocoupler) increases lifetime reliability

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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
TPS709  150-mA 30-V ultra-low-IQ wide-input low-dropout (LDO) regulator with reverse current protection  Power management  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
TPS7A47  36-V, 1-A, 4.17-μVRMS, RF low-dropout (LDO) voltage 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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TPS709 Download
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TPS7A30 Download Download
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TPS7A47 Download Download

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Technical Documents

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User guides (1)
Title Type Size (KB) Date
PDF 9299 02 Apr 2015
Design files (7)
Title Type Size (KB) Date
ZIP 720 27 Mar 2015
ZIP 166 27 Mar 2015
ZIP 5681 27 Mar 2015
PDF 553 27 Mar 2015
PDF 192 27 Mar 2015
PDF 26 27 Mar 2015
PDF 302 27 Mar 2015
Related Tools & Software

Reference Designs  ( 3 )


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