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SERIES: VOF-300 │ DESCRIPTION: AC-DC POWER SUPPLY
FEATURES
•
•
•
•
•
•
•
•
•
•
•
up to 300W continuous power
universal input voltage range
industry standard 3” x 5” footprint
power factor correction
remote voltage sense
remote on/off control
fan & 5 Vdc aux outputs
covered and open-frame configurations
over voltage, over current, over temperature, and short circuit protections
UL/cUL & TUV safety approvals
efficiency up to 94%
MODEL
output
voltage
output
current
output
power1
ripple
and noise2
efficiency3
(Vdc)
max
(A)
max
(W)
max
(mVp-p)
typ
(%)
VOF-300-12
12
25
300
120
92.5
VOF-300-24
24
12.5
300
150
93.5
VOF-300-36
36
8.34
300
150
93.5
VOF-300-48
48
6.25
300
150
94
5
1
5
100
--
Vstb4
Notes:
1.
2.
3.
4.
5.
Maximum output power of 300 W (5 W for Vstb) with 10 CFM forced air, 200 W (3 W for Vstb) with convection cooling.
At full load, nominal input, 20 MHz bandwidth oscilloscope, output terminated with 10 μF electrolytic and 0.1 μF ceramic capacitors.
At full load, 25°C, 230 Vac input.
Standby output voltage. Present on all models.
All specifications are measured at Ta=25°C, 230 Vac input voltage, and 60% rated output load unless otherwise specified.
PART NUMBER KEY
VOF-300 - XX - XXX - X
Base Number
Output Voltage
Chassis:
“blank” = open-frame
CNF = covered
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Input Connector:
“blank” = TAIWAN KING PIN
TERMINAL PVHI series
1 = LONG CHU P3060 series
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CUI Inc │ SERIES: VOF-300 │ DESCRIPTION: AC-DC POWER SUPPLY
date 11/09/2022 │ page 2 of 10
INPUT
parameter
conditions/description
min
voltage
typ
90
frequency
47
max
units
264
Vac
63
Hz
current
at 100 Vac
at 240 Vac
4.0
1.8
A
A
inrush current
at 240 Vac, 25°C, cold start
30
A
3.5
mA
0.3
W
max
units
25,000
12,500
5,000
3,750
μF
μF
μF
μF
leakage current
power factor correction
meets EN 61000-3-2
no load power consumption
measured with the PS-ON signal configured to OFF
OUTPUT
parameter
conditions/description
output capacitance
at 115/230 Vac, full load
12 Vdc output models
24 Vdc output models
36 Vdc output models
48 Vdc output models
initial set point accuracy
at full load, 25°C
Vo
Vstb
line regulation
high line to low line at full load
Vo
Vstb
load regulation
from full to 10% load
Vo
Vstb
hold-up time
adjustability
switching frequency
at full load
min
±1
±3
%
%
±0.5
±1
%
%
±1
±5
%
%
at 115 Vac
16
ms
built in trim pot (VR)
±5
%
60
temperature coefficient
80
±0.05
power on
PS-ON signal1
power off
PS-ON
0
PS-ON = 0V
kHz
%/°C
2
4.5
Vdc
mA
PS-ON = NC (internal circuit will drive PS-On to 11~16 Vdc)
PS-ON = NC
0
power good (PG)
TTL goes high 50~250 ms after powered on
TTL goes low 5~20 ms before 90% Vo
standby output voltage
5 Vdc / 1 A
fan output
12 Vdc / 500 mA
Notes:
typ
mA
1. When not used, short PS-ON & signal GND.
PROTECTIONS
parameter
conditions/description
over voltage protection
latch mode
12 Vdc output
24 Vdc output
36 Vdc output
48 Vdc output
min
over current protection
hiccup, auto recovery
short circuit protection
auto recovery
over temperature protection
auto recovery (temperature of C37)
models
models
models
models
typ
max
15
30
43
56
130
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150
units
Vdc
Vdc
Vdc
Vdc
180
%
110
°C
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CUI Inc │ SERIES: VOF-300 │ DESCRIPTION: AC-DC POWER SUPPLY
date 11/09/2022 │ page 3 of 10
SAFETY & COMPLIANCE
parameter
conditions/description
isolation voltage
input to output for 1 minute
input to earth for 1 minute
output to earth for 1 minute
min
isolation resistance
typ
max
units
3,000
1,500
500
Vac
Vac
Vac
100
MΩ
safety approvals
certified to 62368: IEC, EN, UL
safety class
class I
conducted emissions
EN55032:2012+AC:2013, EN55022:2010+AC:2011, Class B , FCC CFR 47 Part 15 Subpart B
radiated emissions
EN55032:2012+AC:2013, EN55022:2010+AC:2011, Class B , FCC CFR 47 Part 15 Subpart B
harmonic current emissions
IEC 61000-3-2:2014, Class C & D
voltage fluctuations & flicker
IEC 61000-3-3:2013
ESD
IEC 61000-4-2:2008, ±2kV, ±4kV, Class A
radio-frequency, Continuous
radiated disturbance
IEC 61000-4-3:2010, Class A
EFT/burst
IEC 61000-4-4:2012, ±0.5kV, ±1kV, ±2kV, Class A
surge
IEC 61000-4-5:2005, L-N: ±0.5kV, ±1kV, L-PE, N-PE: ±0.5kV, ±1kV, ±2kV, Class A
conducted immunity
IEC 61000-4-6:2013, Class A
power frequency magnetic field
IEC 61000-4-8:2009, Class A
voltage dips
IEC 61000-4-11:2004, Dip: 30% reduction, Dip: 70% reduction, Class A
voltage interruptions
IEC 61000-4-11:2004, >95% reduction, Class B
MTBF
as per MIL-HDBK-217F, at 115 Vac, 25°C, GB
RoHS
2011/65/EU
Notes:
160,000
hours
1. 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 directives.
ENVIRONMENTAL
parameter
conditions/description
min
max
units
operating temperature
see derating curves
-40
80
°C
-40
85
°C
93
%
storage temperature
operating humidity
typ
non-condensing
operating altitude
5000
m
vibration2
as per MIL-STD-810F Table 514.5C-VIII; 15~2000
Hz for 1 hour on each axis for 3 hours
4
G
shock2
as per MIL-STD-810F Table 516.5, Table 516.5-1;
for 10 ms on each axis 3 times
75
G
Notes:
2. See Installation Instructions for mounting requirements.
DERATING CURVES
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date 11/09/2022 │ page 4 of 10
DERATING CURVES (CONTINUED)
EFFICIENCY CURVES
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CUI Inc │ SERIES: VOF-300 │ DESCRIPTION: AC-DC POWER SUPPLY
date 11/09/2022 │ page 5 of 10
MECHANICAL
parameter
conditions/description
dimensions
VOF-300 models: 5.00 x 3.00 x 1.38 (127 x 76.2 x 35.1 mm)
VOF-300-CNF models: 5.35 x 3.46 x 1.59 (136 x 88 x 40.4 mm)
min
typ
weight
VOF-300 models
VOF-300-CNF models
cooling
external fan
CN1 input connector
CN1 mates with JST housing VHR series or equivalent
CN1 input connector (optional)
CN1 mates with MOLEX housing 5195 series or equivalent
CN4 output connector
CN4 mates with JST housing PH series or equivalent
CN5 output connector
CN5 mates with JST housing PH series or equivalent
output terminals
+Vo & -Vo terminals are M3 screws that mate with round or Y
terminals with max OD of 6.75 mm and max ID of 3.9 mm
max
units
inch
inch
420
550
g
g
MECHANICAL DRAWING
5.000 [127.00]
4.551 [115.60]
CN1
2
-
3
ACN
10CFM
0.224 [5.70]
CN5
CN1
ACL 1
2
ACN 3
CN4
PIN
FAN
+Vo
Function
1
-FAN
2
+FAN
3
GND
4
+5 VSB
5
GND
6
PS-ON
-Vo
4
3
2
1
3.000 [76.20]
ACL
2.551 [64.80]
Function
1
Air flow
direction
0.224 [5.70]
PIN
5mm
Open-frame
units: inch [mm]
tolerance: X.XXX = ±0.020 [±0.50]
4
3
2
1
cross sectional view A
Scale 1:1
CN5
VR
CN4
CN5
GND
2
PG
3
-Sense
4
+Sense
4-M4*0.7
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1.123 [28.52]max
1
0.063 [1.60]
Function
0.197 [5.00]max
PIN
1
2
3
4
5
6
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CUI Inc │ SERIES: VOF-300 │ DESCRIPTION: AC-DC POWER SUPPLY
date 11/09/2022 │ page 6 of 10
MECHANICAL DRAWING (CONTINUED)
Covered
units: inch [mm]
tolerance: X.XXX = ±0.020 [±0.50]
5.35 [136.00]
1
ACL
2
-
3
ACN
FAN
CN1
-FAN
2
+FAN
3
GND
4
+5 VSB
5
GND
6
PS-ON
-Vo
VR
PIN
Function
1
GND
2
PG
3
-Sense
4
+Sense
0.437 [11.10]
CN5
0.402 [10.20]
4.55 [115.60]
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CN5
4
3
2
1
cross sectional view A
Scale 1:1
1.591 [40.40]
Function
1
+Vo
3.46 [88.00]
PIN
3.43 [87.00]
ACL 1
2
ACN 3
CN4
2.55 [64.80]
Function
5mm
CN1
PIN
Air flow
direction
10CFM
CN4
1
2
3
4
5
6
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CUI Inc │ SERIES: VOF-300 │ DESCRIPTION: AC-DC POWER SUPPLY
date 11/09/2022 │ page 7 of 10
INSTALLATION INSRUCTIONS
The VOF-300 series has (4) 4 mm diameter mounting holes that can be used in (3) types of installations.
Type 1
Mounting from top with spacers
Type 2
Mounting from top without spacers
Spacer: 4 mm diameter max, 8 mm high minimum
Screw Size: (4) M3X0.5
Mounting torque: 3 kgf-cm
Screw Size: (4) M3X0.5
Mounting torque: 3 kgf-cm
Type 3
Mounting from bottom
Mounting Torque
VOF-300
Screw Size: (4) M4X0.7
Mounting torque: 7 kgf-cm
VOF-300-CNF
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CUI Inc │ SERIES: VOF-300 │ DESCRIPTION: AC-DC POWER SUPPLY
date 11/09/2022 │ page 8 of 10
INSTALLATION INSRUCTIONS (CONTINUED)
Output Terminals
Mate with round or Y terminals with max OD of 6.75 mm and max ID of 3.9 mm
Terminal Size: (2) M3
Torque: 3 kgf-cm
Mounting Clearance
Allow at least 4 mm side clearance and 5 mm height clearance. If clearances aren’t met, the isolation and withstand
specifications may not be met.
Field Ground
Should be connected to the earth (ground) terminal of the apparatus otherwise conducted noise and output noise will
increase.
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CUI Inc │ SERIES: VOF-300 │ DESCRIPTION: AC-DC POWER SUPPLY
date 11/09/2022 │ page 9 of 10
APPLICATION NOTES
On/off Remote Control
A PS On/Off remote control is provided in CN4. See Figure 1 for the PS-ON diagram and control function.
Figure 1
VOF-300
Note: Power on: VPS-ON ≤ 2V, IPS-ON ≥ 2 mA
(PS-ON and GND short, IPS-ON = 4.5 mA typical)
Power off: Open circuit, VPS-ON = 11~16 V
When the PS On/off remote control function is not
used, connect a short circuit between the PS-ON
control & the signal GND.
Output Remote Sensing
The VOF-300 series can remotely sense both lines of the output. The feature moves the effective voltage regulation point
from the output of the unit to the point of connection of the remote sense pins. This feature automatically adjusts the real
output in order to compensate for voltage drops in distribution and maintain a regulated voltage at the point of load. The
remote sense voltage range is as follows:
[(+Vout) – (-Vout)] – [(+Sense) – (-Sense)] ≤ 10% Vo_nominal
If the remote sense is not used, the sense pins should be connected locally to the respective Vout pins. The remote sense pins are located
on CN4.
Figure 2
VOF-300
Series
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CUI Inc │ SERIES: VOF-300 │ DESCRIPTION: AC-DC POWER SUPPLY
date 11/09/2022 │ page 10 of 10
REVISION HISTORY
rev.
description
date
1.0
initial release
12/06/2016
1.01
updated datasheet
01/31/2018
1.02
company logo updated
11/03/2020
1.03
safety approvals updated
01/13/2021
1.04
updated figures and derating and efficiency curves
07/07/2021
1.05
installation instruction note for Type 1 updated
11/09/2022
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
Fax 503.612.2383
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techsupport@cui.com
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.