Vicor Custom Power Unit – Creates Power Card for Venerable VMEbus
The VMEbus ― a standardized computer bus system ― is more than a quarter of a century old and still showing no signs of diminished utility. In fact, the opposite is true. Over the years, this venerable architecture has retained its viability by accommodating newer technologies as they have been introduced. The VMEbus standard, originally specified as a 16-bit bus, is now specified as both a 32-bit bus and a 64-bit bus.
Vicor custom power units specialize in the design, development, and manufacture of rapid response custom switching power supplies and power system. They design and manufacture turnkey custom power systems, specializing in the unique requirements of electronic equipment manufacturers in the military (COTS), EDP, industrial, communications, test equipment, and medical markets. They use Vicor component power in a modular, building-block design approach that offers low cost, quick turnaround, and reliable performance.
The one-slot VME450 power card, which uses Factorized Power Architecture (FPA), is a standard brick product. Its most significant attribute is that it needs only one slot to deliver 550 Watts of power. The ability to generate 550 watts in a single slot provides a significant advantage to the OEM customer. Although competitive one-slot power cards are available, they need to be severely derated having the capability to deliver up to about 250 or 300 Watts at best. Two power cards ― using, of course, two slots ― would be needed to deliver 550 watts.
The power card — 28 Vin, 550 W out, four outputs, input filtered — is a military COTs solution It meets MIL specifictions for shock and vibration (MIL-STD-810 Ground Mobile) as well as military EMI specifications (MIL-STD-461E CE 102, CS101). In contrast to competitive units, the one-slot VME power card provides higher efficiency (85 % versus 78 %), less weight (2.4 pounds versus 3.5 pounds), and the output, of course, is 550 Watts versus 300 Watts. Built with Vicor V·I Chips, it uses two M-FIAMs, six PRMs and six VTMs.