Eurotech: Parvus Announces 100 Watt PCI/104-Express and PC/104-Plus DC/DC Power Supplies for Aircraft and Ground Vehicle Embedded Systems

New PWR-21-11 and PWR-22-11 Cards Provide Isolated DC/DC Power Conversion, MIL-STD-1275 / 704 / 461 Power Conditioning and EMI Filtering

Amaro (ITALY) and Salt Lake City (USA), 23 August 2012 Eurotech subsidiary Parvus announces two new rugged embedded DC/DC power supply boards with built-in MIL-STD power conditioning and EMI filtering for military ground vehicles and aircraft installations. The rugged PWR-21-11 (PC/104-Plus form factor) and PWR-22-11 (PCI/104-Express form factor) galvanically isolated DC/DC converter modules provide 100 watts of combined power output (+3.3V, +5V, +12V) and come equipped with MIL-STD-461 EMI filtering and transient protections for demanding 250V spike and 100V surge requirements under MIL-STD-1275. They support an 18-36V DC input range for 24/28VDC applications and typically eliminate the need for additional in-line power conditioning/EMI filtering devices in military embedded systems.

Featuring a rugged mechanical design, these small form factor (3.550 x 3.775 / 90x 96 mm) cards are designed to be used in a PC/104, PC/104-Plus, PCI-104, PCIe104, or PCI/104-Express embedded system stack, operate without any active cooling over extended temperature ranges (-40 to +85C per MIL-STD-810G), and provide resistance to high levels of shock and vibration (per MIL-STD-810G fixed wing jet, rotary aircraft, and tracked ground vehicle conditions). A tribute to their robustness and versatility, the PWR-21-11 and PWR-22-11 power supplies are integrated into various Parvus MIL-STD-810/1275/704/461 qualified DuraCOR mission computers, DuraNET Ethernet switches, and DuraMAR mobile IP router subsystems.

Form Factor
PWR-21-11: PC/104-Plus (ISA + PCI buses)
PWR-22-11: PCI/104-Express (PCI + PCIe buses)
Designed to Meet MIL-STD-810G (Environmental), MIL-STD-1275D and MIL-STD-704F (Voltage Input, Surges, Spikes, Transients), MIL-STD-461F (Conducted Emissions & Susceptibility)
Voltage Input
Nominal 28.0 VDC (+18V to +36VDC with Support for 250V Spike and 100V Surge per MIL-STD-1275, as well as 1500V DC Galvanic Isolation)
Voltage Output
Up to 100 Watts: +5V @ 10A (50W Max), +3.3V @ 15A (50W Max), +12 V @ 1.5A (18W Max 12V derived from 3.3V rail)
Optional 50 Watt 5V Only Configuration: +5V @ 10A (50W Max)
Environmental (per MIL-STD-810G):
Operating Temp: -40 to +85C / -40 to +185F
Storage Temp: -55 to +100C / -67 to 212F
Operating Shock: 40g, 11ms, 3 pos/neg per axis
Random Vibration: Jet-Helo-Tracked Vehicle Profile, 3 Axes, 1 Hour/Axis

Samples will be available during Q4 2012. Contact for updated availability and pricing. For additional specifications or to download a product datasheet, visit and

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