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date 05/13/2021
page
1 of 5
SERIES: VOF-50B │ DESCRIPTION: AC-DC POWER SUPPLY
MODEL
output
voltage
output
current
output
power
ripple
and noise
1
eciency
2
(Vdc)
max
(A)
max
(W)
max
(mVp-p)
typ
(%)
VOF-50B-12 12 4.2 50.4 120 87
VOF-50B-15 15 3.4 51.0 150 88
VOF-50B-24 24 2.1 50.4 240 89
Notes: 1. Measured at output within 20 MHz BW, at rated line voltage and output load, with a 10 µF tantalum and a 0.1 µF ceramic capacitor across the output.
2. At 230 Vac.
FEATURES
• safety Class II design
• industry standard 2” x 4��� footprint
• no-load power consumption < 0.3 W
• EN 55032 Class B radiated emissions
• 5k meters high altitude operation
PART NUMBER KEY
Base Number
VOF-50B - XX
Output Voltage
Additional Resources: Product Page | 3D Model
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date 05/13/2021 │ page 2 of 5CUI Inc │ SERIES: VOF-50B │ DESCRIPTION: AC-DC POWER SUPPLY
INPUT
parameter conditions/description min typ max units
voltage 90 264 Vac
frequency 47 63 Hz
current
at 115 Vac
at 230 Vac
1.7
0.8
A
A
inrush current at 230 Vac, cold start, 25 °C 90 A
leakage current at 264 Vac, 63 Hz 0.25 mA
no load power consumption
at 110 Vac
at 230 Vac
0.19
0.3
W
W
OUTPUT
parameter conditions/description min typ max units
initial set point accuracy ±3 %
line regulation at full load ±0.5 %
load regulation at 10% to full load ±1 %
adjustability built in trim pot ±5 %
start-up time at 100 Vac, full load 1 s
rise time at 100 Vac, full load 50 ms
hold-up time at 115 Vac, full load 10 ms
switching frequency at full load 62 87 kHz
temperature coecient ±0.04 %/°C
PROTECTIONS
parameter conditions/description min typ max units
over voltage protection latch o 110 130 %
over current protection auto recovery
short circuit protection auto recovery
over temperature protection auto recovery
SAFETY & COMPLIANCE
parameter conditions/description min typ max units
isolation voltage input to output 3,000 Vac
safety approvals UL 62368-1, EN 62368-1, IEC 62368-1
safety class Class II
conducted emissions EN 55032 Class B, FCC Class B
radiated emissions EN 55032 Class B, FCC Class B
input current harmonics EN 61000-3-2 Class A
voltage uctuation and icker EN 61000-3-3
ESD immunity EN 61000-4-2, air: ±8 kV; contact: ±4 kV contact
radiated eld immunity EN 61000-4-3, 3 V/m
electrical fast transient
immunity
EN 61000-4-4, ±2 kV
Notes: 3. The power supply is considered a component which will be installed into nal equipment. The nal equipment still must be tested to meet the necessary EMC directives.
Additional Resources: Product Page | 3D Model