VPX/VITA 62 power supply enlivens mil systems
ProductApril 18, 2012
Alice Moss
Military Embedded Systems
While the burgeoning VPX (VITA 46) VITA-spawned form factor is taking the military embedded realm by storm, an optimal power supply ensures optimal performance and reliability. Enter the VITA 62 Power Supply standard, which defines a power supply geared for VPX chassis while meeting rugged...
While the burgeoning VPX (VITA 46) VITA-spawned form factor is taking the military embedded realm by storm, an optimal power supply ensures optimal performance and reliability. Enter the VITA 62 Power Supply standard, which defines a power supply geared for VPX chassis while meeting rugged VITA 48 specifications. The good news is that vendors including Extreme Engineering Solutions are already producing VITA 62 power supplies, such as the company’s XPm2120, ready to rev up those VPX wares.
The 3U VPX form factor XPm2120 power supply features an across-the-backplane primary distribution rail of 12 V to the payload modules. Meeting MIL-STD-704 for 28 VDC input power, the power supply proffers as much as 300 W running on 3.3, 5, or ±12 V with an efficiency rate up to 90 percent. EMI filtering in lockstep with MIL-STD-461E is also provided, as is a conduction-cooled operating temp of -40 °C to +85 °C at the thermal interface.
The .8" pitch, 1.1 lb power supply additionally features an IPMI controller to monitor temperatures and voltages of the board and to control output power. The controller is connected to a backplane, thanks to an I2C system management bus.
