The VPX2703UC500-SA is a SOSA-aligned, single-slot 3U VPX power supply for modular mission and embedded-computing systems. It converts a nominal 270 VDC platform bus into a 12 VDC main output and a 3.3 VDC auxiliary rail, delivering up to 500 W in a compact 5HP module.
Conduction cooling to the card edges removes the need for an onboard fan and fits sealed or high-density enclosures. The unit is designed around VITA 62 and VITA 48.2 mechanical conventions, with conversion efficiency of up to 92 percent. Input filtering and protective functions address abnormal bus conditions, output faults and overtemperature events.
Two Intelligent Platform Management Bus channels and an I2C interface provide access to voltage, current and temperature measurements, elapsed-time counters, identification data and built-in-test information. These management functions give system integrators detailed health data for mission computers, sensor processors, radar electronics and other modular open-system architectures.
Specifications:
| Dimensions | 3U x 5HP x 168.49 mm |
| Weight | 1.45 lb typical |
| Power Consumption | 556 W maximum at 500 W output |
| Input voltage | 250 to 280 VDC; 270 VDC nominal |
| Input current | 2.22 A maximum at 250 VDC |
| Output voltages | 12 VDC main; 3.3 VDC auxiliary |
| Total output power | 500 W |
| Efficiency | Up to 92% |
| Startup time | 1 second maximum |
