Datasheet

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date
08/17/2012
page
1 of 5
SERIES: VOF-25 │ DESCRIPTION: AC-DC POWER SUPPLY
U
up to 25 W continuous power
compact size
universal input (85~264 Vac)
single output from 3.3~24 V
user trimmable output voltage
3000 V isolation
over current, over voltage, and short circuit protections
UL/cUL and TUV 60950-1 safety approvals
efficiency up to 82%
RoHS
VOF-25-3.3
output
current
output
power
ripple1
and noise
efficiency
(Vdc)
max
(A)
max
(W)
max
(mVp-p)
typ
(%)
4.4
15
50
70
4.4
22
50
73
3.0
23
75
73
2.7
24
90
77
2.0
24
120
80
15
1.6
24
150
80
24
1.0
24
240
82
3.3
VOF-25-5
5
VOF-25-7.5
7.5
VOF-25-9
9
12
N
VOF-25-12
VOF-25-15
VOF-25-24
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.
O
Notes:
output
voltage
TI
MODEL
N
•
•
•
•
•
•
•
•
•
ED
FEATURES
VOF-25 - XX
Base Number
Output Voltage
D
IS
C
PART NUMBER KEY
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CUI Inc │ SERIES: VOF-25 │ DESCRIPTION: AC-DC POWER SUPPLY
date 08/17/2012 │ page 2 of 5
INPUT
conditions/description
min
voltage
frequency
current
at 110 Vac
at 220 Vac
inrush current
at 110 Vac, full load, cold start
at 220 Vac, full load, cold start
input fuse
built-in, non-user serviceable
max
units
85
120
264
375
Vac
Vdc
47
63
Hz
0.7
0.35
conditions/description
line regulation
high line to low line at full load
load regulation
full load to 10% load
min
temperature coefficient
hold-up time
115 Vac at full load
adjustability
adjustable with built-in trim pot
TI
conditions/description
over voltage protection
clamped by TVS
over current protection
automatically recovers
short circuit protection
protected, long term short circuit may reduce
reliability
min
%
±1
%
%/°C
ms
+5
%
50
55
kHz
typ
max
units
115
105
%
%Io
min
3,000
1,500
1,500
Vac
Vac
Vac
50
MΩ
O
conditions/description
input to output at 500 Vdc at 25°C
nom
max
units
TUV EN 60950, CE, UL/cUL 60950-1
IS
C
EMI/EMC
units
primary to secondary for 1 minute
primary to transformer core for 1 minute
primary to ground for 1 minute
SAFETY & COMPLIANCE
safety approvals
max
N
parameter
isolation resistance
A
A
±0.05
-5
45
parameter
20
40
16
switching frequency
PROTECTIONS
typ
A
A
±0.5
N
parameter
U
OUTPUT
isolation voltage
typ
ED
parameter
FCC class B, EN 55022 class B
leakage current
RoHS compliant
yes
MTBF
according to MIL-HDBK-217F
1.5
250,000
mA
hours
ENVIRONMENTAL
parameter
conditions/description
operating temperature
see derating curve
min
nom
units
60
°C
-20
85
°C
operating humidity
non-condensing
20
90
%
storage humidity
non-condensing
20
95
%
D
storage temperature
max
0
operating altitude
10,000
3,000
ft
m
storage altitude
30,000
9,000
ft
m
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CUI Inc │ SERIES: VOF-25 │ DESCRIPTION: AC-DC POWER SUPPLY
date 08/17/2012 │ page 3 of 5
MECHANICAL
parameter
conditions/description
dimensions
3.500 x 2.008 x 0.9803 (88.9 x 51 x 24.9 mm)
min
typ
max
inch
0.09
free air convection or forced air
(see derating curves below)
DERATING CURVES
60
40
20
U
1
100
Load factor ( %)
2
80
80
60
40
20
0
0
0
10
20
30
40
50
60
40
20
10
30
20
40
50
60
0
Ambient temperature (°C)
TI
2
80
0
0
60
Ambient temperature (°C)
1
100
N
100
2. output power vs. input voltage
all models
b. all other models
Load factor ( %)
Load factor ( %)
1. output power vs. ambient temperature
a. 3.3, 5 V models
Convection
3
Forced air (0.5m /min) (18 CFM)
1
3
Forced air (0.5m /min) (18 CFM)
N
MATING CONNECTORS
conditions/description
ac input (CN1)
mates with Molex housing 09-50-3031 with Molex 2878 series crimp contact
dc output (CN2)
mates with Molex housing 09-50-3041 with Molex 2878 series crimp contact
O
parameter
IS
C
MOUNTING METHOD
D
kg
ED
weight
cooling method
units
Horizontal
(performance evaluations conducted under this mounting method)
cui.com
85
90
110
Input Voltage Vac
220
264
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CUI Inc │ SERIES: VOF-25 │ DESCRIPTION: AC-DC POWER SUPPLY
date 08/17/2012 │ page 4 of 5
MECHANICAL DRAWING
90.0 3.54
81.7 3.22
U
N
CN1
42.5 1.67
N
3
51.0 2.01
VADJ
TI
no pin
3.5 (4 PLCS)
MOUNTING HOLE
C
1.6 0.06
N
2
20.32 0.80
O
L
4
3
CN2
2
1
3.0 MAX
(LEAD)
D
IS
C
1
CN2
3
2
1
CN1
ED
units: mm [inches]
tolerance: ±0.3 [±0.01]
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1
-Vo
2
-Vo
3
+Vo
4
+Vo
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CUI Inc │ SERIES: VOF-25 │ DESCRIPTION: AC-DC POWER SUPPLY
date 08/17/2012 │ page 5 of 5
REVISION HISTORY
description
date
1.0
initial release
04/03/2009
1.01
corrected CN1 connector designation on mech drawing
1.02
dimension added to drawing
1.03
new template applied
1.04
added MTBF data
1.05
V-Infinity branding removed
ED
rev.
02/16/2010
05/02/2011
05/13/2011
09/20/2011
08/17/2012
D
IS
C
O
N
TI
N
U
The revision history provided is for informational purposes only and is believed to be accurate.
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800.275.4899
Fax 503.612.2383
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[email protected]
CUI offers 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
affect its safety or effectiveness.
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