MIDDLETON, Wis., 16 Sept. 2011. Extreme Engineering Solutions (X-ES) in Middleton, Wis., is introducing the XPm2120 conduction-cooled, VITA 62, 3U VPX power supply for rugged military applications. The XPm2120 takes a MIL-STD-704 input voltage of 28 volts DC and provides as much as 300 Watts of power on the 3.3-volt, 5-volt, and 12-volt rails at 90 percent efficiency with 12 volts as the primary power distribution rail in the system. The slim 0.8-inch pitch XPm2120 integrates MIL-STD-461E for electro-magnetic interference (EMI) filtering.The XPm2120 can operate input voltages from 16 volts to 50 volts steady-state while maintaining as much as 300 Watts of isolated output power. It provides as much as 15 amps of current on the 3.3-volt rail, 15 amps on the 5-volt rail, and 25 amps on the 12-volt rail. Two XPm2120 power supplies can be connected in parallel to provide increased power output.Using 12 volts instead of 15 for the primary distribution rail enables systems designers to use relatively small copper power plans within the backplane and modules because of lower steady state currents and the resulting decreased distribution losses, X-ES officials say.
In addition, a 12-volt distribution rail reduces susceptibility to current transients because of smaller current draw. The 12-volt distribution rail also enables systems designers to decrease the board's layer count, complexity, and cost due to smaller copper power planes.
For more information contact X-ES online at www.xes-inc.com.
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