Additional Resources: Product Page | 3D Model
date 09/01/2017
page 1 of 7
SERIES: VOF-350 DESCRIPTION: AC-DC POWER SUPPLY
FEATURES
up to 350 W continuous power
-40C to 70C operating temperature
industry standard foot print 3 x 5
low profile 1
power factor correction
12 V/0.5 A fan output
standby power <0.5 W
efficiency up to 94%
long life electrolytic capacitors
output output output ripple efficiency
MODEL
1,2 3,4
voltage current power and noise
max max max typ
(Vdc) (A) (W) (mVp-p) (%)
5
VOF-350-12 12 25.00 300 120 92
5
VOF-350-15 15 21.67 325 150 92
VOF-350-24 24 14.58 350 240 93
VOF-350-30 30 11.67 350 300 93
VOF-350-48 48 7.30 350 480 94
VOF-350-58 58 6.04 350 580 94
Notes: 1. Maximum output power with 13 CFM forced air cooling. See derating curves for full performance details.
2. Combined output power of main output and fan supply shall not exceed the max power rating.
3. Ripple is peak to peak with 20 MHz bandwidth and 10 F tantalum capacitor in parallel with a 0.1 F capacitor at rated line voltage and load ranges.
4. Output ripple can be more than 10% of the output voltage at -40C.
5. With header type output connector, VOF-350-12 max current is 18.75 A (225 W) and VOF-350-15 max current is 18 A (270 W) with 13 CFM forced air cooling.
6. All specifications are measured at Ta=25C, nominal input voltage, and rated output load unless otherwise specified.
PART NUMBER KEY
VOF-350 - XX - X
Output Connections:
Base Number
blank = screw type
Output Voltage 1 = header type
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CUI Inc SERIES: VOF-350 DESCRIPTION: AC-DC POWER SUPPLY date 09/01/2017 page 2 of 7
INPUT
parameter conditions/description min typ max units
voltage 90 264 Vac
frequency 47 63 Hz
at 115 Vac, full load 3.6 A
current
at 230 Vac, full load 1.8 A
inrush current at 230 Vac, cold start 45 A
leakage current at 230 Vac 0.3 mA
power factor at full load 0.95
no load power consumption 0.5 W
input fuse 6.3 A/250 V time delay fuse (included)
OUTPUT
parameter conditions/description min typ max units
initial set point accuracy 1 %
line regulation 0.5 %
load regulation from 100% to 10% load 0.5 %
start-up delay time 2 s
rise time at 115/230 Vac 55 ms
hold-up time at 115/230 Vac 8 ms
adjustability built in trim pot 3 %
switching frequency 50 300 kHz
25% step load change, at 0.1 A/S slew rate, 50%
transient response duty cycle, 50/60 Hz, max excursion 4%, recovery
time 5 ms
temperature coefficient at 0~50C 0.05 %/C
1
fan output 12 Vdc / 500 mA
Notes: 1. Fan supply output voltage tolerance including set point accuracy, line and load regulation is 10% and ripple and noise is less than 10%.
PROTECTIONS
parameter conditions/description min typ max units
over voltage protection hiccup, auto recovery 110 140 %
over current protection hiccup, auto recovery 110 %
short circuit protection hiccup, auto recovery
goes into hiccup mode when the temperature of
over temperature protection
the PCB exceeds 11010C, auto recovery
SAFETY & COMPLIANCE
parameter conditions/description min typ max units
input to output 3,000 Vac
isolation voltage
input to ground 1,500 Vac
EN 60950-1, IEC 60950-1 (ed.2), UL 60950
safety approvals (ed.2), CSA C22.2 No. 60950-1 (ed.2), Class 1
SELV complies with LVD directive
safety class class I
conducted emissions EN 55032 Class B
EN 55032 Class B (to be controlled in end system with external
radiated emissions
core (King core K5B RC 25 x 12 x 15-M in input cable (5 turns))
input current harmonics EN 61000-3-2, class D
voltage fluctuation and flicker EN 61000-3-3, pass
Notes: 2. The power supply is considered a component which will be installed into final equipment. The final equipment still must be tested to meet the necessary EMC directiv es.
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