New Industry Products

Traco Introduces Two Power Supply Sets for Industrial and Medical Applications

April 18, 2022 by Gary Elinoff

The TPI 300 series will serve in industrial settings, while the kindred TPP 300 series will see application in the medical sphere.

Expanding its robust array of power supply offerings, Traco Power’s new units operate with input voltages of 85 to 264 VAC. Single output voltage choices are 12, 15, 24, 36, 48 or 53 VDC, adjustable over a range of ±10%.

The supplies deliver 180 W with convection cooling and up to 300 W with forced air cooling. Maximum power for 5 seconds or less is 360 W.

The TPI series consists of two separate families, each sporting six members: The open-frame TPI 300L-M and its encased sibling, the TPI 300-M. The in kind TPP series offers the open-frame TPP 300A-M family and an encased TPP 300-M line, each with six members of their own. 


The open-frame TPI 300L-M (left) and its TPP counterpart, the TPP 300A-M (right). Images [modified] used courtesy of Traco Power


Within each series, those members provide a single output of 12, 15, 24, 36, 48 or 53 VDC. Output voltages of 18 or 28 VDC are also available by special order. 

The fresh devices extend the range of Traco’s open frame and encased power supply offerings in the medical and industrial arenas—The company now sports a power span from 15 to 450 W. 


Common Traits

Each member in all four series offers 3,000 VAC I/O isolation, together with power efficiencies of up to 93%. Power factors are 0.9 or better.

All 24 offerings satisfy UL and IEC 62368-1.

Output Specifications

  • Voltage set accuracy: ±1% max
  • Input variation (Vmin – Vmax): 0.2% max
  • Load variation (0 – 100%): 0.5% max 
  • No minimum current load is required

Output Protections

  • Short circuit protection: Continuous, with automatic recovery
  • Output current limitation: from 150% (typ) of maximum current output
  • Overvoltage protection: from 115 to 135% of nominal output voltage

Ripple and Noise

  • Maximum ripple and noise ranges from 150 mV peak-to-peak for 12 VDC models to 540 mV peak-to-peak for the 53 V power supplies

Capacitive Load 

  • From 20,000 µF for 12 VDC units to 470 µF for the 53 V devices


Packaging — The Industrial Supplies 

The six TPI 300L-M series members are available in open-frame (L-bracket) packages measuring 4.6 x 2.44 x 1.6 inches, while the six TPI 300-M devices are enclosed in 4.6 x 2.44 x 2.32” housing. 


Packaging — The Medical Supplies

The six TPP 300-M series members are available in encased packages measuring 4.6 x 2.44 x 2.32 inches; The six TPP 300A-M power supplies are offered as 4 x 2 x 1.3” open-frame units. Both lines feature reinforced double output input isolation systems adhering to medical safety standard 60601-1 3rd edition for 2x MOPP.


The TPP 300-M. Image [modified] used courtesy of Traco Power

Members of both the TPP 300-M and the TPP 300A-M series feature leakage currents of less than 100 µA, making them suitable for critical BF (body floating) applications. 


Physical Considerations

All 24 units operate over a temperature range spanning –40 to 80 °C, with power derating at temperatures greater than 50 °C


Environmental Notes

Members of all four series are REACH and RoHS-compliant. 


Feature image used courtesy of Piron Guillaume/Unsplash