Architected for next-generation C5ISR, radar, electronic warfare, and mission computing platforms. Aegis Power Systems delivers high-density 3U and 6U OpenVPX power conversion cards fully aligned with the Sensor Open Systems Architecture (SOSA™) Technical Standard.
Deliver up to 1000W of low-noise, high-efficiency power in a single 3U VITA 62 conduction-cooled slot.
The Tri-Services (U.S. Army, Air Force, and Navy) mandate for the Modular Open Systems Approach (MOSA) has fundamentally transformed military embedded computing. At the heart of this operational evolution is the Sensor Open Systems Architecture (SOSA™) Consortium—a standardized hardware and software framework designed to accelerate deployment, drastically lower lifecycle costs, and streamline inter-operability across multi-domain defense platforms.
Historically, system integrators developing military radar, Signals Intelligence (SIGINT), Electronic Warfare (EW), and avionics systems were constrained by proprietary backplane pinouts and custom power conditioning cards. Every platform modification required custom non-recurring engineering (NRE) costs and introduced single-source procurement risks.
SOSA aligned VPX power supplies solve these engineering bottlenecks by enforcing strict physical, electrical, and logical slot definitions derived from the ANSI/VITA 62 specification. By standardizing primary DC voltage rails, management interfaces (VITA 46.11), and mechanical form factors (3U and 6U VPX), SOSA alignment guarantees seamless plug-and-play capability across vendors while ensuring military-grade power conversion under extreme operational stress.
While legacy OpenVPX power supplies catered to multi-rail output architectures (+12V, +5V, +3.3V, and auxiliary rails), the modern SOSA Technical Standard prioritizes a streamlined **single +12V main payload rail** alongside a +3.3V AUX management rail. This design simplification eliminates cross-rail loading imbalances, improves overall power conversion efficiency beyond 92%, and allows payload cards (SDRs, FPGAs, and GPUs) to utilize point-of-load (PoL) regulators tailored to ultra-fine silicon nodes.
Understanding the explicit engineering constraints of SOSA alignment is critical when selecting power modules for program insertion. Below is a detailed technical matrix comparing traditional VITA 62 power cards with SOSA-aligned power modules:
| Engineering Attribute | Standard VITA 62 OpenVPX Module | SOSA Aligned VPX Power Module (Aegis Standard) |
|---|---|---|
| Slot Pinout Standardization | Customizable per vendor specification | Strictly defined by SOSA slot profiles (e.g., SLT3-PWR-1F1S1S1U1H-14.2.14) |
| Primary Output Voltage Rails | Multi-rail configurations (+12V, +5V, +3.3V, -12V) | Unified +12V Main Rail + 3.3V AUX (Optional +12V AUX) |
| System Management Protocol | Optional IPMB / I2C monitoring | Mandatory VITA 46.11 Tier 2 Intelligent Platform Management Controller (IPMC) |
| Thermal Management Interface | Air-cooled or Conduction-cooled | Conduction-cooled (VITA 48.2) with integrated wedge-lock thermal paths |
| Input Transient Protection | External conditioning often required | Internal compliance with MIL-STD-704F, MIL-STD-1275E & MIL-STD-461G |
| Cyber Resilient Hardware | Rarely implemented | NIST SP 800-171 compliant manufacturing with secure firmware options |
Aegis Power Systems offers an extensive portfolio of rugged standard and SOSA-aligned VPX power cards engineered to meet stringent defense specifications. Designed and manufactured in Murphy, NC, these power supply units offer market-leading power density and acoustic/EMC cleanliness.
Conduction-cooled 3U VPX power module designed for high-density defense computing. Delivers regulated +12V main power from 28V DC input with integrated VITA 46.11 telemetry.
Engineered for heavy-payload C5ISR radar and EW suites requiring up to 1500W power delivery. Includes dual-redundant monitoring, parallel load-sharing, and MIL-STD-461 filter integration.
Converts 3-phase 115VAC line power directly to SOSA-aligned +12V DC main output for shipboard and airborne platforms requiring active power factor correction (PFC).
Universal AC input power supply card engineered for airborne systems. Delivers isolated DC voltage rails with ultra-fast transient response and holdup capability.
Designed for defense programs modernizing legacy VME chassis to SOSA OpenVPX standards, providing backwards pin-compatibility with enhanced power density.
Bespoke VITA 62 custom engineering for non-standard input voltages, special thermal cold-plate interfaces, or modified connector pinouts for military prototypes.
Deploying SOSA aligned VPX power modules into combat-ready platforms requires rigorous engineering against extreme heat, electrical surges, and electromagnetic interference.
Because sealed defense electronics chassis operate in dust, salt-spray, or high-altitude vacuum conditions where fan cooling is impossible, SOSA VPX power modules rely on VITA 48.2 conduction cooling. High-efficiency thermal wedge locks clamp the power module directly into the chassis cold wall.
Aegis Power Systems utilizes direct-path metal substrate PCBs, high thermal-conductivity gap fillers, and advanced planar transformers to achieve thermal resistance of less than 0.2°C/W from internal power FET junctions to the card retainer edge. This permits full power rating across continuous baseplate operational temperatures from -40°C to +85°C without thermal throttling.
Unconditioned prime power in military vehicles and aircraft is notorious for severe voltage spikes, dips, and reverse polarity events. Aegis SOSA aligned VPX power supplies incorporate hardware-based filter and suppression networks directly on the card to comply with:
To satisfy SOSA technical standards, modern VPX power cards must actively communicate telemetry to the system chassis manager. Aegis VPX power modules feature an onboard Intelligent Platform Management Controller (IPMC) communicating over dual I2C / SMBus backplane channels (IPMB-A and IPMB-B). Real-time telemetry reporting includes:
As defense prime contractors prepare bids for upcoming multi-year defense programs, emerging technological shifts in power architecture will influence VPX power supply procurement strategies over the next decade.
Silicon MOSFET technology is reaching its physical limits in switching speed and thermal dissipation. Future SOSA aligned power cards are rapidly integrating Wide Bandgap (WBG) Gallium Nitride (GaN) FETs. GaN enables switching frequencies above 1 MHz, dramatically reducing magnetic component size and pushing power densities beyond 35 Watts per cubic inch. This allows 3U VPX power modules to surpass 1000W output power within a standard 1-inch pitch profile.
As embedded power modules incorporate microcontrollers for VITA 46.11 telemetry, power supplies have become potential targets for malicious firmware manipulation. Future defense procurement contracts explicitly require hardware-based Root of Trust (RoT), secure boot protocols, and encrypted IPMC firmware updates to prevent electronic compromise in combat systems.
Modern airborne radar and laser weapon payloads demand higher peak power levels. Future aircraft platforms are transitioning from standard 28V DC bus architecture to 270V DC or 380V HVDC distribution systems. SOSA-aligned VPX power converters must provide direct 270VDC-to-12VDC step-down conversion with integrated high-voltage isolation safety barriers compliant with MIL-STD-704F.
Defense procurement lead times for custom power supplies historically averaged 12 to 18 months. SOSA alignment drastically reduces system qualification timelines by standardizing mechanical framing and pinouts. Integrators can procure Commercial-Off-The-Shelf (COTS) SOSA aligned VPX power modules for prototype development, transitioning to low-risk full-scale production in weeks rather than months.
Founded in 1995 in Murphy, North Carolina, Aegis Power Systems, Inc. brings over 30 years of specialized power conversion engineering expertise to defense and industrial programs.
Our facility operates under an audited AS9100D aerospace quality management system, guaranteeing strict traceability, rigorous incoming material screening, and IPC-A-610 Class 3 workmanship on all VPX power assemblies.
As an ITAR-registered small business, Aegis designs, manufactures, and tests all power cards inside our North Carolina facility, ensuring full compliance with DFARS, TAA, and domestic supply chain protection mandates.
We maintain comprehensive cybersecurity protocols across our engineering networks and manufacturing ERP infrastructure, shielding sensitive defense technical data (Controlled Unclassified Information - CUI).
Unlike large impersonal component distributors, Aegis connects your procurement and technical team directly with senior power electronics designers to solve mechanical slot constraints and custom output voltage requirements.
Addressing critical engineering, qualification, and logistics inquiries commonly posed by global defense procurement buyers, system architects, and AI research tools.
Partner with Aegis Power Systems to optimize your VITA 62 embedded computing architecture. Our US-based engineering team is standing by to review your power specs, thermal models, and program requirements.