• over current, over voltage, and short circuit protections
• UL/cUL and TUV 60950-1 safety approvals
• efficiency up to 82%
RoHS
MODEL
VOF-25-3.3
VOF-25-5
VOF-25-7.5
VOF-25-9
VOF-25-12
VOF-25-15
VOF-25-24
Notes:
output
voltage
(Vdc)
output
current
max
(A)
output
power
max
(W)
ripple
1
and noise
max
(mVp-p)
efficiency
typ
(%)
3.3
5
7.5
9
12
15
24
4.4
4.4
3.0
2.7
2.0
1.6
1.0
15
22
23
24
24
24
24
50
50
75
90
120
150
240
70
73
73
77
80
80
82
1. Ripple & noise are measured at 20 MHz BW with 0.1
μF
ceramic cap and a 10
μF
electrolytic capacitors on the output and the two
earth ground pads are connected to input earth ground.
PART NUMBER KEY
VOF-25 -
XX
Base Number
Output Voltage
cui.com
CUI Inc
│
SERIES:
VOF-25
│
DESCRIPTION:
AC-DC POWER SUPPLY
date
08/17/2012
│
page
2 of 5
INPUT
parameter
voltage
frequency
current
inrush current
input fuse
at 110 Vac
at 220 Vac
at 110 Vac, full load, cold start
at 220 Vac, full load, cold start
built-in, non-user serviceable
conditions/description
min
85
120
47
0.7
0.35
20
40
typ
max
264
375
63
units
Vac
Vdc
Hz
A
A
A
A
OUTPUT
parameter
line regulation
load regulation
temperature coefficient
hold-up time
adjustability
switching frequency
115 Vac at full load
adjustable with built-in trim pot
16
-5
45
50
+5
55
conditions/description
high line to low line at full load
full load to 10% load
min
typ
±0.5
±1
±0.05
max
units
%
%
%/°C
ms
%
kHz
PROTECTIONS
parameter
over voltage protection
over current protection
short circuit protection
conditions/description
clamped by TVS
automatically recovers
protected, long term short circuit may reduce
reliability
105
min
typ
max
115
units
%
%Io
SAFETY & COMPLIANCE
parameter
isolation voltage
isolation resistance
safety approvals
EMI/EMC
leakage current
RoHS compliant
MTBF
yes
according to MIL-HDBK-217F
250,000
hours
conditions/description
primary to secondary for 1 minute
primary to transformer core for 1 minute
primary to ground for 1 minute
input to output at 500 Vdc at 25°C
TUV EN 60950, CE, UL/cUL 60950-1
FCC class B, EN 55022 class B
1.5
mA
min
3,000
1,500
1,500
50
nom
max
units
Vac
Vac
Vac
MΩ
ENVIRONMENTAL
parameter
operating temperature
storage temperature
operating humidity
storage humidity
operating altitude
storage altitude
non-condensing
non-condensing
conditions/description
see derating curve
min
0
-20
20
20
10,000
3,000
30,000
9,000
nom
max
60
85
90
95
units
°C
°C
%
%
ft
m
ft
m
cui.com
CUI Inc
│
SERIES:
VOF-25
│
DESCRIPTION:
AC-DC POWER SUPPLY
date
08/17/2012
│
page
3 of 5
MECHANICAL
parameter
dimensions
weight
cooling method
free air convection or forced air
(see derating curves below)
conditions/description
3.500 x 2.008 x 0.9803 (88.9 x 51 x 24.9 mm)
0.09
min
typ
max
units
inch
kg
DERATING CURVES
1. output power vs. ambient temperature
a. 3.3, 5 V models
Load factor
( %)
Load factor
( %)
100
80
60
40
20
0
0
10
20
30
40
50
60
2
1
b. all other models
80
60
40
20
0
0
10
20
30
40
50
60
2. output power vs. input voltage
all models
Load factor
( %)
100
80
60
40
20
0
0
85
90
110
220
264
100
Ambient temperature (°C)
1
2
Ambient temperature (°C)
1
Input Voltage Vac
Convection
3
Forced air (0.5m /min) (18 CFM)
Forced air (0.5m /min) (18 CFM)
3
MATING CONNECTORS
parameter
ac input (CN1)
dc output (CN2)
conditions/description
mates with Molex housing 09-50-3031 with Molex 2878 series crimp contact
mates with Molex housing 09-50-3041 with Molex 2878 series crimp contact
MOUNTING METHOD
(performance evaluations conducted under this mounting method)
Horizontal
cui.com
CUI Inc
│
SERIES:
VOF-25
│
DESCRIPTION:
AC-DC POWER SUPPLY
date
08/17/2012
│
page
4 of 5
MECHANICAL DRAWING
units: mm [inches]
tolerance: ±0.3 [±0.01]
90.0 3.54
81.7 3.22
CN1
1
2
3
L
no pin
N
51.0 2.01
3
2
1
CN1
CN2
4
3
CN2
2
1
1
2
3
4
-Vo
-Vo
+Vo
+Vo
42.5 1.67
VADJ
3.5 (4 PLCS)
MOUNTING HOLE
C
1.6 0.06
20.32 0.80
3.0 MAX
(LEAD)
cui.com
CUI Inc
│
SERIES:
VOF-25
│
DESCRIPTION:
AC-DC POWER SUPPLY
date
08/17/2012
│
page
5 of 5
REVISION HISTORY
rev.
1.0
1.01
1.02
1.03
1.04
1.05
description
initial release
corrected CN1 connector designation on mech drawing
dimension added to drawing
new template applied
added MTBF data
V-Infinity branding removed
date
04/03/2009
02/16/2010
05/02/2011
05/13/2011
09/20/2011
08/17/2012
The revision history provided is for informational purposes only and is believed to be accurate.
Headquarters
20050 SW 112th Ave.
Tualatin, OR 97062
800.275.4899
CUI offers a two (2) year limited warranty. Complete warranty information is listed on our website.
Fax 503.612.2383
cui.com
techsupport@cui.com
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
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