PFC250 AC-DC Series Data Sheet
MAY 26, 2006 revised to AUG 16, 2006 Page 3 of 5 www.power-one.com
Input Specifications
PARAMETER CONDITIONS/DESCRIPTION MIN NOM MAX UNITS
Input Voltage - AC Continuous input range. 85 264 VAC
Input Frequency AC Input. 47 63 Hz
Brown Out Protection Lowest AC input voltage that regulation is maintained with full rated loads. 80 VAC
Hold-up Time After last AC line peak at 250 watts. 20 ms
Input Current 85 VAC at full rated load. 4.5 ARMS
Input Protection Non-user serviceable internally located AC input line fuse.
Inrush Surge Current Internally limited by thermistor. Vin = 230 VAC, one cycle, 25°C. 35 APK
Power Factor Per EN61000-3-2. 0.95 W/VA
Operating Frequency Switching frequency of main output transformer. 129
Switching frequency of secondary transformer. 70 kHz
Switching frequency of Power Factor Correction circuit. 60
Output Specifications
PARAMETER CONDITIONS/DESCRIPTION MIN NOM MAX UNITS
Efficiency Full rated load, 110 VAC. Varies with distribution of loads among outputs. 65 75 %
Minimum Load, V1 Minimum load required to maintain regulation on V2 Single output models 0
All other models 4 Amps
Minimum Load, V3 Minimum load required to maintain regulation on V4 Single output models N/A
PFC250-4000 1.25 Amps
All other models 0.6
Ripple and Noise Full load, 20 MHz bandwidth. See Model Selections
Output Power 300 LFM forced-air cooling. 250 Watts
Overshoot /Undershoot Output voltage overshoot/undershoot at turn-on. 0 %
Regulation Varies by output. Total regulation includes: line changes over the specified See Model Selections
input range, changes in load starting at 20% load and changing to 100% load.
Transient Response Recovery time to within 1% of initial set point due to a 25% step load from any 500 s
load setting from minimum to maximum load.
Turn-on Delay Time required for initial output voltage stabilization. 2 Sec
Turn-on Rise Time Time required for output voltage to rise from 10% to 90%. 20 ms
Interface Signals and Internal Protection
PARAMETER CONDITIONS/DESCRIPTION MIN NOM MAX UNITS
Overvoltage Protection Latch style overvoltage protection. Available on all 3.3V output, V1 4.1 4.65
single output models and V1, V2, and V3 on all 3.3V output, V2 4.2 4.2
multiple-output models. 5V output, V1, V2 6.0 6.4
12V output, V1, V2 14.0 16.0 V
15V output, V1 18.3 19.8
24V output, V1 27.0 30.7
48V output, V1 60.0 70.0
Overload Protection Fully protected against output overload and short circuit. Automatic recovery upon removal of overload condition.
Overtemperature Protection System shutdown due to excessive internal temperature, automatic reset.
Output Good TTL compatible signal. Signal is high when V1 output is 3.3V 3.16 V
within 5% of nominal. Signal shall remain low for 20 5V 4.75
milliseconds following loss of Output Good.
Input Power TTL compatible logic signal. Time before regulation dropout due to loss of input 5 ms
Fail Warning power. May be used as independent PSOK signal in redundant applications.
Current Share Accuracy of shared current with up to 6 parallel units. Single-wire current share 10 %
on V1 and V2 with return via vegative (-) Sense return. Minimum current share
load is 6A or 50W, whichever is smaller.
Remote Sense Available on V1 and V2. Total voltage compensation for cable losses with 250 mV
respect to the main output.
Inhibit Output voltage is inhibited by application of external high (5V) signal.
Standby Power Available with fan option versions only (+5VDC). 100 mA