The Bel Fuse/Power-One CPA250-4530 is a 250 W AC-DC power supply module engineered for CompactPCI systems. It delivers four regulated DC outputs from a universal AC input with active power factor correction compliant with EN 61000-3-2. The unit supports hot-swap operation and integrates ORing FETs for true n+1 redundant configurations. Built on patented EDGE™ technology, it combines high power density with comprehensive overtemperature, overvoltage, overcurrent, and overpower protection.
## Technical Specifications
**Input Specifications**
• Input voltage (AC): 90–264 VAC
• Input frequency: 47–63 Hz
• Input current: Up to 3.7 A typical
• Active power factor correction per EN 61000-3-2
• Input protection: Transient suppressor (varistor), voltage suppressor diodes, active inrush current limiter
**Output Specifications**
• Output 1: 5 VDC, 40 A
• Output 2: 3.3 VDC, 40 A
• Output 3: 12 VDC, 5.5 A
• Output 4: −12 VDC, 2 A
• Total output power: 250 W
• Hold-up time: Minimum 15 ms at Vimin, Ion nom
• Start-up time: Maximum 150 ms at Vin nom, Io nom
• Single-wire current share for three outputs
**Physical & Thermal**
• Dimensions: 6.4″ × 1.6″ × 6.4″ (162.5 mm × 40.6 mm × 162.5 mm) for 8 HP width
• Connector: 47-pin Positronic
• Cooling: Forced-air cooling required
• Enclosure: Aluminum case with integrated heat sink and RFI shielding
## Key Features
• Dual input capability: Universal AC or DC input
• Hot-swap operation for live module replacement without system shutdown
• Inhibit and enable control inputs with remote sense lines
• Output overload, open-circuit, and short-circuit protection
• Low inrush current limited by active circuitry
• PICMG® CompactPCI® specification compliance
• RoHS-compliant versions available (models ending in ‘G’)
## Typical Applications
CompactPCI backplane systems requiring distributed power architectures, redundant power configurations, and hot-swappable supply modules.
## Compatibility & Integration
Compliant with PICMG power interface specifications for CompactPCI systems. Integrates with 47-pin Positronic connectors and supports single-wire current sharing across three regulated outputs for scalable system designs.
