cui.com
date 09/05/2017
page 1 of 7
SERIES: VMS-550 │ DESCRIPTION: AC-DC POWER SUPPLY
MODEL output
voltage
output
current
output
power1,2
ripple
and noise3,4
efciency
(Vdc)
max
(A)
max
(W)
max
(mVp-p)
typ
(%)
VMS-550-12 12 41.67 500 240 90
VMS-550-15 15 33.33 500 300 90
VMS-550-24 24 22.92 550 240 91
VMS-550-30 30 18.33 550 300 91
VMS-550-48 48 11.46 550 480 92
VMS-550-58 58 9.48 550 580 92
Notes: 1. Maximum output power with 21 CFM forced air cooling. See derating curves for full performance details.
2. Combined output power of main output and fan supply shall not exceed the max power rating.
3. Ripple is peak to peak with 20 MHz bandwidth and 10 µF tantalum capacitor in parallel with a 0.1 µF capacitor at rated line voltage and load ranges.
4. Output ripple can be more than 10% of the output voltage at -40°C.
5. All specications are measured at Ta=25°C, nominal input voltage, and rated output load unless otherwise specied.
FEATURES
• up to 550 W continuous power
• -40°C to 70°C operating temperature
• industry standard foot print 3” x 5”
• low profile 1.5”
• power factor correction
• 12 V/0.5 A fan output
• standby power <0.5 W
• efficiency up to 92%
• long life electrolytic capacitors
• complying with the latest EMI standard
IEC 60601-1-2:2014 (4th edition)
PART NUMBER KEY
Base Number
VMS-550 - XX
Output Voltage
For more information, please visit the product page | If your application requires forced air, view our Dc Fans
cui.com
date 09/05/2017 │ page 2 of 7CUI Inc │ SERIES: VMS-550 │ 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, full load
at 230 Vac, full load
6
3
A
A
inrush current at 230 Vac, cold start 45 A
leakage current at 115 Vac
at 230 Vac
0.2
0.4
mA
mA
touch current 0.1 mA
power factor at full load 0.95
no load power consumption 0.7 W
input fuse 8 A/250 V time delay fuse (included)
OUTPUT
parameter conditions/description min typ max units
initial set point accuracy ±1 %
line regulation ±0.5 %
load regulation from 100% to 10% load ±1 %
start-up delay time 2 s
rise time at 115/230 Vac 55 ms
hold-up time at 115/230 Vac, full load 16 ms
adjustability built in trim pot ±3 %
switching frequency 50 300 kHz
transient response
25% step load change, at 0.1 A/µS slew rate, 50%
duty cycle, 50/60 Hz, max excursion 4%, recovery
time 5 ms
temperature coefcient at 0~50°C ±0.05 %/°C
fan output112 Vdc / 500 mA
Notes: 1. Fan supply output voltage tolerance including set point accuracy, line and load regulation is ±10% and ripple and noise is less than 10%.
PROTECTIONS
parameter conditions/description min typ max units
over voltage protection hiccup, auto recovery 110 140 %
over current protection hiccup, auto recovery 110 %
short circuit protection hiccup, auto recovery
over temperature protection goes into hiccup mode when the temperature of
the PCB exceeds 110±10°C, auto recovery
SAFETY & COMPLIANCE
parameter conditions/description min typ max units
isolation voltage
input to output (2 x MOPP)
input to ground (1 x MOPP)
output to ground
4,200
1,500
1,500
Vac
Vac
Vac
safety approvals
IEC 60601-1: 2005 +CORR1:2006
+CORR2:2007 +AM1:2012, EN 60601-1:2006
+A11:2011 +A1:2013, ANSI/AAMI ES 60601-1
(2005+CI:09+A2:10), AMD1:2012 CAN/CSA-
C22.2 No 60601-1 (2008) 60601-1:14 ISO 14971,
2nd edition complies with LVD directive
safety class class I
Notes: 2. 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.
For more information, please visit the product page | If your application requires forced air, view our Dc Fans
cui.com
date 09/05/2017 │ page 3 of 7CUI Inc │ SERIES: VMS-550 │ DESCRIPTION: AC-DC POWER SUPPLY
SAFETY & COMPLIANCE
parameter conditions/description min typ max units
conducted emissions EN 55011 Class B
radiated emissions EN 55011 Class B (to be controlled in end system with external
core (King core K5B RC 25 x 12 x 15-M in input cable (5 turns))
input current harmonics EN 61000-3-2, class D
voltage uctuation and icker EN 61000-3-3, pass
ESD immunity EN 61000-4-2, level 4, criterion A
radiated eld immunity EN 61000-4-3, level 4, criterion A
electrical fast transient
immunity EN 61000-4-4, level 4, criterion A
surge immunity EN 61000-4-5, level 4, criterion A
conducted immunity EN 61000-4-6, level 4, criterion A
magnetic eld immunity EN 61000-4-8, level 4, criterion A
voltage dips, interruptions EN 61000-4-11, criterion A & B
MTBF as per Telcordia-SR332-issue 3 3,370,000 hours
RoHS 2011/65/EU
Notes: 1. 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 -40 70 °C
storage temperature -40 85 °C
operating humidity non-condensing 20 90 %
storage humidity non-condensing 20 90 %
operating altitude 16,000 ft
DERATING CURVES
Output Power vs. Input Voltage
Output Power (%)
0
10
20
30
40
50
60
70
80
90
100
Input Voltage (Vac)
90 95 100 105 110 115 120 125 255 260 264
Ambient Temperature (°C)
Output Power (W)
-40 -30 -20 -10 0 10 20 30 40 50 60 70
0
Forced Air (21 CFM)
50
100
150
200
250
300
350
400
450
500
Conduction
Natural Convection
12, 15 Vdc Output Models
Output Power vs. Ambient Temperature
For more information, please visit the product page | If your application requires forced air, view our Dc Fans
cui.com
date 09/05/2017 │ page 4 of 7CUI Inc │ SERIES: VMS-550 │ DESCRIPTION: AC-DC POWER SUPPLY
DERATING CURVES (CONTINUED)
All other Output Models
Output Power vs. Ambient Temperature
Ambient Temperature (°C)
Output Power (W)
-40 -30 -20 -10 0 10 20 30 40 50 60 70
0
Forced Air (21 CFM)
Natural Convection
50
100
150
200
250
300
350
400
450
500
Conduction
550
For more information, please visit the product page | If your application requires forced air, view our Dc Fans
cui.com
date 09/05/2017 │ page 5 of 7CUI Inc │ SERIES: VMS-550 │ DESCRIPTION: AC-DC POWER SUPPLY
MECHANICAL
parameter conditions/description min typ max units
dimensions 5.00 x 3.00 x 1.50 (127.00 x 76.20 x 38.10 mm) inch
weight 400 g
cooling external fan or conduction plate
J1 input connector Mates with JST housing VHR-3M; pins SVH-41T-P1.1 or equivalent
J2 output connector Accepts ring tongue terminal AMP 8-31886-1 for max 16 AWG wire up to 11 A. Use multiple terminals
for higher currents.
J3 fan connector Mates with Tyco 640440-2
MECHANICAL DRAWING
J1
PIN Function
1 L
2 NC
3 N
J2
PIN Function
1 +VE
2-VE
J3
PIN Function
1 +FAN
2 -FAN
units: inch [mm]
tolerance: ±0.04 [±1.0]
±06.511[800.0±155.]4 2.0±06.511[800.0±155.]4 2.0
±
0
8
.
4
6
[
8
0
0
.
0
±
1
5
5
.
2
]2.0±08.46[800.0±155.]22.0
]02.67[000.3]02.67[000.3
]00.721[000.5]00.721[000.5
]07.5[522.0]07.5[522.0
]07.5[522.0]07.5[522.0
SELOHGNITNUOMSELOHGNITNUOM
]02.3AID[621.0AID ]02.3AID[621.0AID
SLP-4SLP-4
3J3J
11
NN
LL
11
1J1J
]01.83[005.
1]
01.83[005.1
WOLFRIAFONOITCERIWDOLFRIAFONOITCERID
4M4M
2M2M
1M1M
3
M3
M
]27.1[860.0]27.1[860.0
]06.1[360.
0]
06.1[360.0
]00.9[553.
0]
00.9[553.0
A02JA02J
11
A31JA31J
11
For more information, please visit the product page | If your application requires forced air, view our Dc Fans
cui.com
date 09/05/2017 │ page 6 of 7CUI Inc │ SERIES: VMS-550 │ DESCRIPTION: AC-DC POWER SUPPLY
RECOMMENDED CONDUCTION PLATE AND CLEARANCE
The conduction power rating referenced in the derating curves is with additional aluminum base plate of 3 mm thickness
with 177.8 mm (7”) length & 101.6 mm (4”) width. Clearance of minimum 15 mm above the component height is
recommended for better thermal management.
NIMmm02x3MWERCSKS NCIMmm02x3MWERCSKSC
REHSAWDNATUN3M REHSAWDNATUN3M
ROTCENNOC1JROTCENNOC1J
mm0.3mm0.3 mm1.83mm1.83
5.215.21
mm0.52mm0.52
mm0.51mm0.51
mmmm
5.215.21
mmmm
mm0.52mm0.52
niMniM
ylppusrewoPylppusrewoP
tnenopmocxaMtnenopmocxaM
.thgieh .thgieh
etalpesabmunimulAetalpesabmunimulA
etalpesabmunimulAetalpesabmunimulA
NOITPOGNIXIFNOITPOGNIXIF
MOUNTING OPTIONS
NIMmm52x3MWERCSK
SNCI
Mmm52x3MWERCSKSC
REHSAWDNATUN3MREHSAWDNATUN3M
RECAPSMM4RECAPSMM4
ECAFRUSGNITNUOMECAFRUSGNITNUOM
3MFFODNATS 3MFFODNATS
ECAFRUSGNITNUOMECAFRUSGNITNUOM
mm)02OT81(x3Mmm)02OT81(x3M
REHSAWDNA
REHSAWDNA
DAEHNAPWERCSDAEHNAPWERCS
1-NOITPOGNIXIF1-NOITPOGNIXIF 2-NOITPOGNIXIF2-NOITPOGNIXIF
MM4MM4
For more information, please visit the product page | If your application requires forced air, view our Dc Fans
date 09/05/2017 │ page 7 of 7CUI Inc │ SERIES: VMS-550 │ DESCRIPTION: AC-DC POWER SUPPLY
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.
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 09/05/2017
The revision history provided is for informational purposes only and is believed to be accurate.
REVISION HISTORY
For more information, please visit the product page | If your application requires forced air, view our Dc Fans