A Phoenix Mecano Company

VPX315 - High Efficiency / Low Power

WIENER VPX power supplies are commercial off-the-shelf (COTS), conduction cooled single stage converters according to the ANSI/VITA 62.0 specification. They can be used to power a VPX chassis and will fit into the standard envelope defined by VITA 48.0 specifications.

Using state of the art switching power technology a wide input range voltage range as well as high overall efficiency is achieved. The VPX340 and VPX315 series is designed in compliance with relevant MIL STD 461, 704 and 1275. They can be outfitted with an optional hold up circuit as per MIL 704 with either internal or external capacitor bank.
An embedded microprocessor allows monitoring and control via I2C bus.
The VPX power supply mechanical dimensions are 3U x 4HP (0.80” slot). It is outfitted with connectors, keying and alignment mechanism as per VITA 62.


Main Features

  • Compliant to VITA 62 baseline specification
  • Up to 150 W maximum power,
  • 3U size, 0.8"
  • 4 independent output voltages VS1 (12V), VS2 (3.3V), VS3 (5V), Vaux2(-12V), Vaux1 connected to VS1, Vaux3 connected to VS2
  • up to 90% peak efficiency
  • 28V DC input voltage, wide input range 16V ... 50 V

VPX315 Power Supply Features   

  • Compliant to VITA 62 baseline specification
  • High efficiency up to >90%
  • wide input voltage range: 16 …50 V DC, reverse polarity protection
  • Voltage sense controlled, Over Voltage, Under Voltage, Over Current, Over Temperature protection
  • Microprocessor controlled with via I2C bus communication for monitoring (status, input and 4 output voltages and currents)
  • designed to be compliant to VITA 62 specification and relevant MIL-STD-461, MIL-STD-704, MIL-STD-1275
  • Ruggedized to MIL­STD­810, optional with conformal coating
  • Dimensions: 100.0 mm x 170.0 mm x 20.3 mm    (3.9” x 6.69” x 0.8”)
  • Weight 0.5kg (1.1 lbs)
Item Description
VPX315DMA 150W VPX VITA62 power supply


150W VITA62 VPX Power Supply

High efficiency conduction cooled power supply according to VITA62 specification.

Power supply


VS1 [+12V]

VS2 [+3.3V]

VS3  [+5V]

Vaux1 [+12V]

Vaux2 [-12V]

Vaux3 [+3.3V]


28V DC




connected to VS1


connected to VS2


Technical Details


Form Factor 3U VPX CC
Pitch 4HP / 0.8 inch
Weight 0.4 kg / 0.9 Lbs
Storage Temperature -55°C to 105°C
Operating Temperature -40°C to 85°C
Input to Output Insulation 1000V
Input to Case Ground Isolation 500V
Output to Case Ground Isolation 500V
Case Ground to Safety Ground Resistance < 10 mΩ
Main Power VS1 / VS2 / VS3  
Maximum Output Power 150W
Maximum Input Power ~165W
Maximum Dissipated Power @ max. Power ~15W
Minimum Turn ON Voltage 19 V
Minimum Turn OFF Voltage 16 V
Maximum Continuous/Peak Input Voltage 35 V / 50V
Nominal Input Voltage 28V
Maximum Short Time Input Voltage (15 s) 50 V
Maximum Currents 12V / 3V3 / 5V 1 A* / 4 A* / 40 A (* shared with Vaux)
Fixed Switching Frequencies 12V / 3V3 / 5V 400 kHz / 400 kHz / 400 kHz
Peak Efficiencies 12V / 3V3 / 5V 92% / 92% / 92%
Max. Output Ripple and Noise: 12V / 3V3 / 5V 15 mVrms / 10 mVrms / 10 mVrms
(0-20 MHz Bandwidth) < 120 mVpp / < 50 mVpp / < 50 mVpp
Line Regulation: 12V / 3V3 / 5V. 40 mV / 2 mV / 4 mV
Vin=Vin,min to Vin,max, Io and Tc fixed < 0.1%
Load Regulation: 12V / 3V3 / 5V 70 mV / 2 mV / 4 mV
Overvoltage Protection: +/-12V / 3V3 / 5V (Uncontrolled) 14.4 V / 4.1 V / 6.1 V (hardware)
Temperature Protection Sensing Point (identical to case) 85°C (Latching)
Maximum Internal Working Temperatures 125°C
Auxiliary Power Vaux-12V / Vaux+12V, Vaux+3.3V  
Maximum Current 1 A* / 1 A* / 4 A (* shared with VS1 and VS2)
Fixed Switching Frequency 500 kHz
Efficiency 88%
Max. Output Ripple and Noise (0-20 MHz Bandwidth) < 120 mVpp / < 50 mVpp / < 50 mVpp
Load Transient Recovery Time 100 μs
Control Logic  
Full Shutdown OVC, OVT, OFLW, UFLW
Compatibility / Environmental  
Compatibility VDE 0805, IEC 950
Designed to meet MIL-STD-461F (EMI) and MIL-STD810G (Environmental) Optional with conformal coating to withstand sand, dust and salt atmosphere.


Product Data Sheet  
VPX315 - High Efficiency / Low Power: Print Product Data Sheet


Manual/Tech-Notes : VPX371 manual
Introduction: WIENER_Power Supplies_intro


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