PSU-1449 3U OpenVPX Storage Module

28V DC, MIL-STD-704D rugged power supply with DO-254 artifacts certifiable up to DAL-A

Power and certify 3U OpenVPX mission computers with a DAL-A power supply

The PSU-1449 is a 28 V DC, surge-tolerant and rugged 3U power supply that preserves aircraft resources and operates reliably in any environment.

Delivered with complete DO-254 artifacts certifiable up to DAL-A, it simplifies system certification and powers the most safety-critical mission computers.


Lower Malfunction Risk and Save Resources

Mercury’s proven 3U avionics modules accelerate safety-critical applications like AI machine vision and augmented reality, expedite the certification process, save aircraft resources and speed subsystem time to market.


Key Features

  • Built with COTS components
  • Up to 220 W output, 5 output channels
  • 16–60 V DC Input
  • MIL-STD-704F, -40°C to 85°C
  • Rugged and efficient
  • Safety certifiable up to DAL-A with DO-254 artifacts
  • Safety certification services and support

Power Supply

  • 28 V DC power supply
  • +12 V, +3.3 V, +5 V, +3.3 V AUX and -12V AUX
  • Efficiency: @Vin=28 V, Pout=220 W >85%
  • Built-in input filter to reduce conducted emissions
  • Connector pinout mapped to VITA 62 standard
  • ENABLE* and INHIBIT* signals according to VITA62 standard

Monitoring Features

  • FAIL* signal if PCB goes over temperature
  • Two LEDs located on the ejector edge: 28 V input OK (green) and FAIL* (red)
  • SM0/SM1 interface to access EEPROM, Elapsed time counter (ETC) and PCB temperature

BuiltSAFE® Proven Elements

  • DO-254 hardware
  • Design and information assurance


  • 3U OpenVPX, 1.0" slot pitch, VITA 65
  • ANSI/VITA 62 modular power supply standard (1.0" pitch)

Rugged and Low Power

  • MIL-STD-704F
  • 20 W typical power consumption
  • 4.7 W minimum, 45 W maximum
  • Temperature:
    • Non-operating: -55°C to 105°C
    • Operating: -40°C to 85°C
  • Humidity: 95%
  • Fungus resistance
  • IPC-A-610 class 3 workmanship
  • IPC J-STD-001 class 3 soldering
  • IPC-A-600 class 3 PCB manufacturing
  • IPC-CC-830 conformal coating
  • REACH compliant, ROHS variant option
  • UL 94 Class V-0 flammability
  • EN 9100:2008
  • Conduction cooled
  • Advanced rugged packaging options

Proven Ease of Integration

Save Development Time and Costs

Mercury’s OpenVPX chassis, power supply and accessories can be combined with 3U and 6U boards to save subsystem testing, development and certification time and costs.

Learn More

Purpose-Built Subsystems

Built For Today, Ready for Tomorrow

By combining our OpenVPX multiprocessing and SBC modules with a complementary portfolio of storage, I/O, networking, GPUs, and software, we create customizable, rugged embedded subsystems that securely operate at the tactical edge.  

Learn More

Discover More

White Paper: Accelerating Big Data Processing and AI at the Edge

Discover how technologies developed by Mercury Systems and NVIDIA scale the best AI-enabling data...


Ready for take-off? Let’s set your electronics to airplane mode.

Most of us have heard an aircraft safety demonstration – a short pitch that reminds us to fasten...


Blog: Innovating past the need for compromise for your embedded computing

What do you think of when you hear the word ‘compromise’? Possibly an agreement made between...


White Paper: Enabling big data processing and AI-powered everything, everywhere

Learn how Mercury and Intel collaborate to scale and deploy composable data center capabilities...