PFC400PCX 400W Power Supply from RAM Technologies


400-Watt ATX Power Supply

The PFC400PCX 400W ATX medical power supply is specifically designed for powering ATX and Xeon medical applications. Adaptive Efficiency Control (AEC) technology maintains a constant high efficiency over the entire input range. This allows the power supply to operate with very low internal temperatures at maximum load, especially at low-input voltages.

Choice of output cables included standard. Dual low-noise fans with Smart Fan Technology optional, for applications where acoustic noise is an issue.



Cabling: Cable connectors and lengths are customized to your specifications. Please consult our output cable configurator or contact us for details.
ATX12VO Option: Can be built to conform to the Intel® 12-Volt only configuration, using the 10-pin motherboard power connector.
Recommended Line Cord: SJT, 3X16 or 3X14 AWG








Input Voltage Range: 100 to 250 Vac +/-10%
Supply Overvoltage: Cat Two < 300V
Input Current: 5.75A max
Frequency: 50/60 Hz
Inrush Current: 35A Cold @ 264 Vac
Efficiency: 75% to 80% typ
PFC Correction: Active > .95
Leakage Current: < 250uA @ 264 Vac 60Hz
Input Fuses: 2X 6.3A 250V Line & Neutral


Max Output Power: 400 Watts continuous
Hold-Up Time: > 40ms @ full load
Overvoltage Protection: +15% of set voltage
Thermal Protection: Auto Recovery/ cycle pwr. on
Minimum Loading: None
Cross Regulation: < 0.5%
Line Regulation: < 0.05%
Load Regulation: < 1% +/- cable factor
AC Turn-On Time: < 2 sec

Output Voltage -12V +5V +3.3V -12 -5V +5Vsb
Output current max. 33.3A 30A 28A 1.2A 0.5A 2.0A
Ripple mV P-P 100 50 50 100 50 50





Operating Temperature: 0 to 50°C
Storage Temperature: -40 to 80°C
Operational Humidity: 0 to 95% nc
Storage Humidity: 0 to 95% nc
Operational Altitude: -500 to 9840 ft
Storage Altitude: -500 to 40,000 ft
Pollution Degree Class: Two


MTBF (demonstrated): > 500,000 hours
Expected Life: > 8 years, when use as specified

EMC Compliance

EN61000-4-2 ESD Level 3
EN61000-4-3 RF Susceptibility 3v/m
EN61000-4-4 EFT Level 3
EN61000-4-5 Surge Level 3
EN61000-3-2 Harmonics
EN61000-3-3 Flicker
EN61000-4-11 Voltage Dips, Short Interruptions
EN55011 Conducted and Radiated Emissions

Standards Compliance

Desktop Platform Form Factors: REV 1.1
IEC60601-1 2nd & 3rd edition
UL file E191947 ISO9001:2008
Lead-free RoHS and REACH compliant
ECCN# EAR99 Conflict Material compliant
Patient Protection: Two MOPP


  1. Max output from +5V & +3.3V = 180 Watts. When loading the +5 &+3.3V, multiply total load by 1.2 and subtract from 400Watts.
  2.  Output derates from 100Vac to 85Vac 3.5W/Volt
  3. Initial voltage tolerance +/-3%