The VPX283UC640-SA is a 3U VPX DC-DC converter for high-performance embedded computing, sensor processing and AI-enabled mission systems. It accepts an 18 to 36 VDC input, centered on the 28 VDC buses used across military vehicles and aircraft, and provides up to 700 W from one 5HP slot.
The module allocates up to 640 W to the 12 VDC main rail and up to 60 W to the 3.3 VDC auxiliary rail. Efficiency reaches 92 percent, and VITA 48.2 conduction cooling transfers heat through the card edges. Up to three units can operate in parallel when a system needs additional capacity or a distributed power arrangement.
Dual IPMB channels and I2C communications expose voltage, current, temperature and lifetime data to the host system. The conformally coated assembly incorporates protection for input transients, reverse polarity, overvoltage, overcurrent, short circuits and thermal overload, giving integrators a compact power building block for rugged modular architectures.
Specifications:
| Dimensions | 3U x 5HP x 168.49 mm |
| Weight | 1.7 lb typical |
| Power Consumption | 790 W maximum at 700 W output |
| Input voltage | 18 to 36 VDC; 28 VDC nominal |
| Input current | 35.4 A maximum at 22 VDC; 27.8 A typical at 28 VDC |
| Output power | 12 VDC at 640 W; 3.3 VDC auxiliary at 60 W |
| Total output power | 700 W |
| Efficiency | Up to 92% |
| Parallel operation | Up to 3 units |
| Startup time | 1 second maximum |
