The introduction of the VNX+ standard (VITA 90) establishes a compact building block for high-performance edge computing. The architecture is designed for modular, robust systems and is compatible with SOSA, enabling its use in defense and other mission-critical applications.
A key component is the power supply, which is designed as a 19mm-wide conduction-cooled plug-in module and engineered by Elma to ensure reliable operation under harsh environmental conditions.
Key specifications:
- Input: 18–36 Vdc
- Outputs: +12 V / 12 A; +5 V / 12 A; +3.3 V / 12 A; +3.3 V AUX / 1.8 A
- Total combined power: up to 250 W
- Efficiency: up to approx. 90%
- Topology: single-stage power architecture
- Control & monitoring: power good, enable, fault, module present
- Communication: I²C / SMBus (optional)
- Insulation: 500 Vdc (input–to–case and input–to–output)
- Thermal/mechanical: conduction-cooled with wedge locks
- Environmental conditions: Compliant with MIL-STD-810 (temperature, shock, vibration)
- EMC: Compliant with MIL-STD-461 (with external filtering)
Optionally, the power supply can be configured with redundancy or expanded to include power hold-up functionality, ensuring that the system remains operational in the event of a brief interruption in the input voltage. This is particularly relevant in mobile or military platforms where voltage dips may occur.
Thanks to its compact design, standardized interfaces, and robust construction, Elma’s VNX+ power supply is a key component in modular edge systems.
