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date 10/16/2018
page 1 of 5
SERIES: VOF-70B │ DESCRIPTION: AC-DC POWER SUPPLY
MODEL output
voltage
output
current
output
power
ripple
and noise1
eciency2
(Vdc)
max
(A)
max
(W)
max
(mVp-p)
typ
(%)
VOF-70B-12 12 5.84 70 120 87
VOF-70B-24 24 2.92 70 240 89
VOF-70B-48 48 1.46 70 300 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-70B - XX
Output Voltage
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date 10/16/2018 │ page 2 of 5CUI Inc │ SERIES: VOF-70B │ 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
1.8
0.9
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
0.2
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 60 85 kHz
temperature coecient ±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 latch o
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.
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date 10/16/2018 │ page 3 of 5CUI Inc │ SERIES: VOF-70B │ DESCRIPTION: AC-DC POWER SUPPLY
SAFETY & COMPLIANCE (CONTINUED)
parameter conditions/description min typ max units
surge immunity EN 61000-4-5, ±2 kV di, ±4 kV com
conducted immunity EN 61000-4-6, 3 Vrms
magnetic eld immunity EN 61000-4-8, 50 Hz, 1 A/m (rms), Class A
voltage dips, interruptions
EN 61000-4-11:
voltage dips 30% reduction for 500 ms, Class A
voltage dips >95% reduction for 10 ms, Class A
voltage dips >95% reduction for 5000 ms, Class B
MTBF as per MIL-HDBK-217F, 25°C, full load 350,000 hours
RoHS yes
Notes: 4. 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.
ENVIRONMENTAL
parameter conditions/description min typ max units
operating temperature see derating curves -20 70 °C
storage temperature -40 85 °C
operating humidity non-condensing 5 95 %
altitude 5,000 m
DERATING CURVES
Output Load vs. Ambient Temperature
100
80
60
40
20
Input Voltage (Vac)
Load (%)
264
90 150 180 210 240
120
Output Load vs. Input Voltage
100
80
60
40
20
Ambient Temperature (°C)
Load (%)
40 50 60
50
-20 -10 0102030
70
EFFICIENCY CURVES
VOF-70B-12 Eciency vs. Output Load
(Natural Convection)
VOF-70B-24 Eciency vs. Output Load
(Natural Convection)
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date 10/16/2018 │ page 4 of 5CUI Inc │ SERIES: VOF-70B │ DESCRIPTION: AC-DC POWER SUPPLY
MECHANICAL
parameter conditions/description min typ max units
dimensions 101.6 x 50.8 x 31.6 (4.0 x 2.0 x 1.24 inch) mm
weight 152 g
cooling natural convection
CN100 input connector CN100 mates with Jowle A3961H02-3P, crimp pin A3961T2P-2C,
or Molex 09-50-3031, crimp pin 2478 series
CN200 output connector CN200 mates with Jowle A3961H02-4P, crimp pin A3961T2P-2C,
or Molex 09-50-3041, crimp pin 2478 series
MECHANICAL DRAWING
CN100 Connector
PIN Function
1 AC(L)
2 NP
3 AC(N)
units: mm
tolerance:
X≤30: ±0.25 mm
30<X≤100: ±0.35 mm
100<X≤300: ±0.50 mm
holes: ±0.20 mm
CN200 Connector
PIN Function
1 +V
2 +V
3RTN
4RTN
EFFICIENCY CURVES (CONTINUED)
VOF-70B-48 Eciency vs. Output Load
(Natural Convection)
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date 10/16/2018 │ page 5 of 5CUI Inc │ SERIES: VOF-70B │ DESCRIPTION: AC-DC POWER SUPPLY
CUI oers a two (2) year limited warranty. Complete warranty information is listed on our website.
CUI reserves the right to make changes to the product at any time without notice. Information provided by CUI is believed to be accurate and reliable. However, no responsibility is
assumed by CUI for its use, nor for any infringements of patents or other rights of third parties which may result from its use.
CUI products are not authorized or warranted for use as critical components in equipment that requires an extremely high level of reliability. A critical component is any component of a
life support device or system whose failure to perform can be reasonably expected to cause the failure of the life support device or system, or to aect its safety or eectiveness.
Headquarters
20050 SW 112th Ave.
Tualatin, OR 97062
800.275.4899
Fax 503.612.2383
cui.com
techsupport@cui.com
rev. description date
1.0 initial release 10/16/2018
The revision history provided is for informational purposes only and is believed to be accurate.
REVISION HISTORY
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