Bel Fuse / Power-One CPA250-4530 AC-DC Power Supply

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.