PCIe2VPX3UX4



PCIe2VPX3UX4 PCIe and VPX Compatible Adapter Carrier




P0 on the VPX device mates with J0 on PCIe2VPX3UX4. The connector is used for power, JTAG, and global addressing. A dip switch is supplied to allow user selection of the global address. The JTAG signals are are routed to a header on PCIe2VPX3UX4. The 12V rail from the PCIe bus is used to generate the 3.3V and 5V supplied to P0.

The power supply designs utilize switching regulators controlling MOSFET´s. An LC filter insures clean power at the VPX device. The PCIe gold fingers are rated for 1.1A each, and a total of 5.5A on the +12V rail. 55W are available to the card after power conversion. Please note this is the combined power requirement across the +12, +5, and 3.3V power used by the VPX. In most cases 55W is sufficient. PCIe2VPX3UX4 has a cable connector to allow additional 12V power to be added to the card. The two supplies are DIODE coupled. In some cases the 12V supply on the backplane will not be adequately routed by the PC causing voltage sag on the 12V. If this occurs use the cable connector to compensate. The power supplies include the bulk capacitance to properly bipass the FET´s and post conversion voltage rails. In addition the VPX connectors are bipassed with a 470 uF capacitor. The power supplies are checked with voltage monitor circuits. The LED´s are not illuminated unless the voltage is within the defined range.

J1 on the PCIe2VPX3UX4 is interconnected with the PCIe lanes from the gold finger connections. Matched length, 100 ohm differential pair routing techniques are employed to allow for trouble free operation. Please note: P1 does not have a reference clock defined in the VPX specification. The VPX is expected to use a local oscillator to synchronize with the PCIe data. Your PC may need to have the Spread Spectrum setting disabled when using this card with a VPX. Generally this is easy to do via your computers BIOS settings. Dynamic Engineering also offers a second model with an isolation switch to allow the PC to operate with spread spectrum clocking and the VPX without. PCIe8LSwVPX3U

The Rear IO (P2) connector is carefuly routed to a 68 pin SCSI connector. 100 ohm differential routing with matched length traces. We recommend using our SCSI cable and the HDEterm68 breakout block with the SCSI connector.

Alignment pins are supplied to make sure of correct installation. The VPX installed will be perpendicular to the PCIe2VPX3UX4 with the component side to the right [relative to the photo above]. The VPX connector is located on the right hand side of the PCIe2VPX3UX4 in a position to allow a PCI or PCIe 1/2 length card to be used in the slot in front of the PCIe2VPX3UX4. We use this feature when testing VPX card´s rear IO through the supplied SCSI connector. For example with VPX-RCB we have a PMC-BiSerial-III installed onto a PCI carrier to allow for control and loop-back using this path.

  • 1 year warranty
  • Quantity discounts available


  • PCIe2VPX3UX4 Features

  • Size
  • Half size+ PCIe card.

  • VPX compliant slots
  • 1 VPX Slot provided. 3U

  • Operating Temp.
  • Industrial

  • PCIe
  • 4 lane design with matched length impedance controlled routing.

  • Software Interface
  • Transparent design. Installed VPX defines the interface.

  • Power
  • 3.3, 5, -12V, regulated from +12V rail.

    3.3V and 5V power supplies capable of up to 9.5A continuous without additional cooling in lab environment. The max FET temperature was below 100C. The max junction temperature of the FET is 150C. We used a case temperature limit of 100C to be conservative. A midpoint of 7.44A on 5V and 6.6A on 3.3V produced 65.8C on the 5V FET with no cooling [3.3V FET was 57.6C]. We can estimate that the card can handle the given load up to 50C with some margin. With lighter loads higher temperatures can be achieved without cooling. With cooling higher loads can be achieved at higher temperatures.


  • IO Interface
  • Front Bezel IO supported at VPX bracket. P2 "user IO" supported with SCSI connector mouted to Bezel on PCIe2VPX3UX4. Differential Impedance controlled matched length traces from P2 to SCSI connector.

  • Specification
  • PCIe, VPX: VITA 46


  • LED´s
  • +3V, +5V [with voltage monitoring]

  • DIP switch
  • 8 position switch provided to provide user options for Global Addressing.

  • JTAG
  • Optional JTAG connections are tied to a labeled header.



    PCIe2VPX3UX4 Benefits

  • Speed
  • PCIe2VPX3UX4 offers PCIe x4 speeds at the XMC

  • Price
  • Make use of existing PC based debugging tools to speed your integration. We use with Visual C to allow for compiling and single stepping through our designs. We find this configuration very efficient for solving HW issues in new designs. Mount your VPX into a PC and have full access to components and debugging SW. Quantity discounts are available.

  • Ease of Use
  • PCIe2VPX3UX4 is easy to use. A plug and play interface to the VPX site. A passive design with no user settings. You may want to use with a motherboard not installed into a chassis for total freedom. We use this set-up to have full access to the hardware you are developing.

  • Availability
  • PCIe2VPX3UX4 is generally available from stock. Send in your order and in most cases have your hardware the next day.

  • Size
  • PCIe2VPX3UX4 is a half size+ PCIe board which conforms to the PCIe mechanical and electrical specifications. The VPX connectors are located to clear a 1/2 length PCIe card to allow adjacent slots to be used.

  • VPX Compatibility
  • PCIe2VPX3UX4 is VPX compliant per the VITA 46 specification. All Dynamic Engineering 3U VPX Modules are compatible with the PCIe2VPX3UX4. All other VPX 3U Modules which are compliant with the VITA 46 specification are compatible with the PCIe2VPX3UX4.

  • PCIe Compatibility
  • PCIe2VPX3UX4 is PCI Express compliant. PCIe2VPX3UX4 can be expected to work in any PCIe compliant backplane. PCIe2VPX3UX4 has been tested in multiple backplanes. 4 or more lane connector slots support the PCIe2VPX3UX4.


    Engineering Kit
    PCIe2VPX3UX4-BO..........Break Out Kit for PCIe2VPX3UX4 includes: 3' HDEcabl68 and HDEterm68-MP


    PCIe2VPX3UX4 Ordering Information
  • PCIe2VPX3UX4 Order the PCIe2VPX3UX4 for a base version (PCIe2VPX3UX4 with standard processing [leaded solder])

  • Add-ROHS to receive a PCIe2VPX3UX4 with ROHS processing. Standard processing will result without this option

  • Add -DD to receive a PCIe2VPX3UX4 with a PC standard "Disk Drive" connector installed for supplemental power. The "-DD" option will allow an added 5A [60W] to be used on the card.

  • Add -DDV to receive a PCIe2VPX3UX4 with a verticle PC style "Disk Drive" connector installed for supplemental power. The "-DDV" option will allow an added 5A [60W] to be used on the card.

  • Add -JTAG to receive a PCIe2VPX3UX4 with the JTAG header installed on the rear of the card. Allows connection through PCIe2VPX3UX4 to the JTAG connections on the VPX card installed.


    Please note that the standard card without the -DD or -DDV, option will work in most situations. Many VPX´s fit within the "gold finger" power budget.
    If you are unsure of your power requirements, we recommend ordering with a Power Connector installed to support your future development, and eliminate needing to install at a later date.

  • PCIe2VPX3UX4 Order combinations of the above options by simply adding the extension(s) to your order request.


    PCIe2VPX3UX4 Manuals
    The silk-screen completely covers all user options - defining the Global address selections, JTAG header definitions etc.
    Download the
    PCIe2VPX3UX4 manual for switch settings, operational hints etc.

    Related Items
    HDEcabl68 SCSI II/III Cable
    HDEterm68 SCSI II/III to 68 pin terminal block

    Client Benefits of working with Dynamic Engineering

    Custom, IP, PMC, XMC, PCIe, PCI, cPCI, PC104p, PCIe104, VME, VPX Hardware, Software designed to your requirements



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