30W Ultra Wide Range Power Supply for Protection Relays Reference Design


Design files


This power supply solution for Protection Relays handles an ultra-wide range of both AC (88-276V AC) and DC (24-250V DC) inputs making it a suitable platform to power a variety of Protection Relays. The power supply is designed to output industry standard voltages (such as +/- 12V and isolated 6.75V) required in many Protection Relays while also providing excellent line and load regulation (< +/- 3%). This solution has been engineered for high wattage (30W) with good efficiency (up to 78%) and has also been pre-compliance tested for IEC61000-4 (EFT and Surge) and CISPR 11 Class A (Interference).

  • Ultra-wide range AC (88-276V AC) and DC (24-250V DC) input handling enables usage in a variety of Protection Relays and RTUs
  • Accurate outputs with excellent load and line regulation in the 3% range
  • Platform solution with High wattage (30W) capability while providing efficiencies up to 78%
  • Confidence from passing Pre-Compliance testing - IEC61000-4 (EFT and Surge) and CISPR 11 Class A (Interference)
  • Generates multiple industry standard voltages (+12V and -12V) and isolated supply (6.75V)
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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.

TIDU231.PDF (7941 K)

Reference design overview and verified performance test data

TIDC330.ZIP (2943 K)

Detailed schematic diagram for design layout and components

TIDR471.PDF (542 K)

Detailed schematic diagram for design layout and components

TIDR472.PDF (95 K)

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

TIDC329.ZIP (1457 K)

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

TIDC328.ZIP (234 K)

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

TIDU268.PDF (2489 K)

PCB layer plot file used for generating PCB design layout


Includes TI products in the design and potential alternatives.

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Technical documentation

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Type Title Date
* Design guide 30-W Ultra-Wide-Range Power Supply for Protection Relay Design Guide Apr. 02, 2014

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