3U power supply VPX340

DC/DCregulatedmultiple-output

Overview
WIENER VPX power supplies are conduction-cooled, commercial off-the-shelf (COTS) single-stage converters designed to meet VITA 62.0 requirements and to integrate into standard VPX avionics chassis compliant with the VITA 46.0 envelope. The VPX340 series delivers up to 400W with high efficiency and a wide input range, and is tested to MIL-STD profiles for airborne and rugged ground applications. Onboard intelligence provides monitoring and control via I²C and Micro-USB interfaces for system integration and maintenance.

Key features

• COTS VPX power supply with conduction cooling for airborne and rugged systems
• Compliant with VITA 62.0; fits standard VITA 46.0 envelope (3U x 4HP)
• High-efficiency single-stage converter; wide DC input range (15–40 V)
• Tested to MIL-STD-461, MIL-STD-704, MIL-STD-1275 and MIL-STD-810 for rugged environments
• Integrated microcontroller with I²C monitoring and Micro-USB communication/firmware update port

Variants (examples)

• VPX340DMA — 400W VPX VITA 62 power supply; MIL-STD-461, -704, -1275 tested; standard acrylic conformal coating; input 28 V DC. Example outputs: VS1 [+12V] 15A; VS2 [+3.3V] 20A; VS3 [+5V] 40A; Vaux1 [+12V] 1A; Vaux2 [-12V] 1A; Vaux3 [+3.3V] 4A.
• VPX340DMAP — same electrical configuration with Parylene conformal coating (non-RoHS); input 28 V DC; tested to same MIL-STD profiles.

Technical data (table)
Compliance: VITA 62 specification; compliance-tested to MIL-STD-461, MIL-STD-704 and MIL-STD-1275 (per VITA 62, par. 3.2.1); MIL-STD-810 ruggedization testing; standard acrylic conformal coating (other coatings available on request).
Power & Efficiency: Up to 400 W output; efficiency up to 90% (≈87% at full 400W load). Input: 15 V … 40 V DC (typical 28 V DC); reverse polarity protection.
Protection Features: Voltage-sense controlled over-voltage, under-voltage, over-current and over-temperature protection.
Management & Control: Microcontroller-based monitoring; I²C bus for status, input and output voltages/currents and temperatures; Micro-USB connector for communication and firmware updates.
Mechanical: 100.0 mm x 168.5 mm x 19.56 mm (3.94 in x 6.63 in x 0.77 in); weight 0.60 kg (1.3 lbs).

Technical specifications

• Form factor: VITA 62 VPX power supply, fits VITA 46.0 envelope (3U x 4HP)
• Output power: 400 W (medium power class)
• Efficiency: Up to 90% (≈87% at full 400 W)
• Input range: 15 V to 40 V DC; typical reference 28 V DC
• Example outputs (variant): VS1 [+12V] 15 A; VS2 [+3.3V] 20 A; VS3 [+5V] 40 A; Vaux1 [+12V] 1 A; Vaux2 [-12V] 1 A; Vaux3 [+3.3V] 4 A
• Protections: OVP, UVP, OCP, OTP; reverse polarity protection
• Standards / Ruggedization: VITA 62 compliance; MIL-STD-461, MIL-STD-704, MIL-STD-1275 tested; MIL-STD-810 testing; conformal coating (acrylic standard; other coatings on request)
• Monitoring & communication: Integrated microcontroller; I²C monitoring; Micro-USB for communication and firmware updates
• Cooling: Conduction-cooled for VPX chassis integration
• Dimensions & weight: 100.0 mm x 168.5 mm x 19.56 mm; 0.60 kg