The Emerson/Artesyn/Astec LPS255-CF is a 250 W component power supply engineered for OEM and system integrator integration. This chassis-mount unit delivers 24 V (adjustable 24–48 V) output with active power factor correction and built-in EMI filtration. The -CF suffix indicates an optional top-mounted fan cover requiring 30 CFM forced air cooling. Input accepts 85–264 Vac or 120–300 Vdc across 47–440 Hz. Designed for professional installation into larger systems, the LPS255-CF is not rated for convection cooling and not intended for standalone operation.
## Technical Specifications
• **Output Power:** 250 W @ 30 CFM forced air cooling
• **Output Voltage:** 24 V nominal, adjustable 24–48 V (2:1 ratio)
• **Output Current:** 10.4 A maximum; 0.32 A minimum load; 12.5 A peak
• **Input Voltage:** 85–264 Vac; 120–300 Vdc
• **Input Frequency:** 47–440 Hz
• **Efficiency:** 75% typical at full load
• **Inrush Current:** 20 A maximum, cold start @ 25 °C
• **Switching Frequency:** 120 kHz
• **Hold-up Time:** 20 ms @ 250 W load, 115 VAC nominal input
• **Safety Ground Leakage:** < 0.5 mA @ 50/60 Hz, 264 Vac
• **Supervisory Outputs:** 5 V @ 100 mA regulated; 12 V @ 500 mA
## Key Features
• Active power factor correction per IEC EN61000-3-2
• EMI filtering meets FCC Class B, CISPR 22 Class B, EN55022 Class B, VDE 0878 PT3 Class B
• Remote sense and remote inhibit capability
• Single-wire current sharing support
• Power fail signal (TTL logic, 50–150 ms response)
• DC power good signal (TTL logic)
• Overvoltage, overload, short-circuit, and thermal protection
• RoHS and lead-free compliant
## Typical Applications
System integration, telecom equipment, industrial control systems, and distributed power architectures where forced-air cooling is available.
## Compliance & Integration
Approvals: VDE 60950, UL 60950, CSA 60950, NEMKO 60950, CB Certificate 2186, CE Mark (LVD). Dimensions: 262.0 mm L × 127.0 mm W × 50.8 mm H. EMC compliance must be verified at system level.
