eFO600
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Wide range AC/DC Dual Output 600W Power Supply

600W high-density models
Universal AC input with PFC
Active load current share
O-ring diode for N+1 parallel operation
Ruggedized U-Channel construction
International regulatory approvals
RoHS compliant

Input
Input Voltage:
Frequency:
Inrush Current:
Efciency:
Power Factor:
Input Protection:
Brown – Out:
Leakage Current:

85 – 264VAC
47 – 63Hz
50A maximum, cold start at 25°C
89% typical at 230VAC, full load
84% typical at 115VAC, full load
0.96 typical at 230VAC, full load
0.99 typical at 115VAC, full load
Internal Line Fuse: IEC type 10A 250VAC SLO BLOW
75 to 300VAC
< 0.5mA @ 50 / 60Hz, 264VAC

Output Voltages & Currents
Output

Output Voltage

Maximum Amps / Watt
with 24CFM Forced Air

Peak Load

V1

12V, 24V, 28V, 32V, 48V, 56V

600W

620W

V2 – Option

3.3V, 5V, 12V, 24V

5A / 50W

5.5A

V3 – Option

5V STANDBY

0.5A

0.75A

Output
Maximum Power:

300W (250W on 12V version) for free
convection base plate cooling, 600W
with forced cooling air
Adjustment Range: ± 5%
Auxiliary standby output (option):
5V @ 0.5A regulated, ± 4%
V2 Output (option): 3.3V, 5V, 12V, 24V ± 5% 5A / 50W maximum
Line Regulation:
± 0.1%
Load Regulation:
Less than ± 0.5% for load changes from
zero to full load
Ripple & Noise
1% pk–pk Max, 20Mhz BW measured on
10uF tantalum in parallel with a 0.1uF
ceramic capacitor on output connector
Initial Set Point Tolerance:
Vout ± 0.5%
Minimum Load:
Not required
Overshoot & Undershoot:
Less than 0.5% at turn ON and OFF
Transient Load Response:
± 5% Max. Deviation for load change of
25% to 75%, at slew rate of 1A /µsec,
recovery time less then 500µsec
Turn On Delay:
1sec. maximum
Hold-up Time:
10mSec minimum
Turn-On Rise Time: 50mSec typical
Over-current Protection:
105 to 135% of I Max, constant current
limit, automatic recovery
Over-voltage Protection:
120 to 135% above nominal (Latched ShutDown) AC input must recycle to re-start

Tel: +44 (0) 1722 413060
Fax: +44 (0) 1722 413034

Temperature Protection:
Shutdown due to excessive internal
temperature 95 ± 5°C automatic recovery
Current Share:
YES, Built In O-ring diode / FET
Remote Sense
V1 only – compensates for 0.5V lead drop
min. will operate without remote sense
connected
Signals & Commands
Inhibit (on /off):
Active low, output shut down
DC Fail:
TTL level Open collector active low when
there is loss of regulation
AC Fail (option):
Open collector active low
I²C bus (option):
I²C Passive data: s/n, model no., revision,
and/or user dened data
Environmental Specications
Temperature:
Operating: -40°C to +50°C (Linear de-rating
to 50% output power at 70°C
Storage: -50°C to +85°C
Temperature Coefcient:
0 to 70°C ± 0.02% / °C
Cooling:
250 / 300W free convection cooling (base
plate cooling). 600W forced air cooling
(24CFM min.)
Humidity:
Maximum 95% RH non-condensing
Altitude:
Operating 6,000 ft. non-operating 40,000 ft.
Vibration:
Three orthogonal axes at 1 octave/min,
5 min dwell at four major resonances at
0.75G peak, 5Hz to 500Hz

sales@greshampower.com
www.greshampower.com