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date 07/24/2018
page 1 of 8
SERIES: VMS-300 │ DESCRIPTION: AC-DC POWER SUPPLY
FEATURES
• up to 3002 W continuous power
• 12.5 W/in3 power density
• universal input (90~264 Vac)
• 12 Vdc auxiliary fan output
• over voltage, short circuit, and over temperature protections
• built-in active PFC function
• efficiency up to 85%
RoHS
MODEL output
voltage
output
current
output
power
ripple and
noise4, 5
eciency
(Vdc)
max
(A)
max
(W)
max
(mVp-p)
min
(%)
VMS-300-12 12 2523002120 82
VMS-300-15 15 2023002150 82
VMS-300-24 24 12.523002240 83
VMS-300-36 36 8.3323002360 84
VMS-300-48 48 6.2523002480 84
VMS-300-D0512 V1
V2
5
12
243
13.333240350
120 80
VMS-300-D1224 V1
V2
12
24
13.333
6.6732403120
240 85
VMS-300-12-CF 12 25 300 120 82
VMS-300-15-CF 15 20 300 150 82
VMS-300-24-CF 24 12.5 300 240 83
VMS-300-36-CF 36 8.33 300 360 84
VMS-300-48-CF 48 6.25 300 480 84
VMS-300-D0512-CF V1
V2
5
12
24
13.33 240350
120 80
VMS-300-D1224-CF V1
V2
12
24
13.33
6.67 2403120
240 85
VMS-300-12-CFS 12 25 300 120 82
VMS-300-15-CFS 15 20 300 150 82
VMS-300-24-CFS 24 12.5 300 240 83
VMS-300-36-CFS 36 8.33 300 360 84
VMS-300-48-CFS 48 6.25 300 480 84
VMS-300-D0512-CFS V1
V2
5
12
24
13.33 240350
120 80
VMS-300-D1224-CFS V1
V2
12
24
13.33
6.67 2403120
240 85
Notes: 1. Peak power of 600 W within 500 µs only applies to single output models
2. Total continuous output power will not exceed 300 W with 25 CFM forced air, 150 W without fan.
3. Total combined continuous output power will not exceed 240 W with 25 CFM forced air, 120 W without fan.
4. Measured at 10 kHz ~ 20 MHz, with 0.1 µF ceramic and 22 µF electrolytic parallel capacitors
5. 1% minimum load is required to maintain the ripple and regulation (10% for dual output models)
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CUI Inc │ SERIES: VMS-300 │ DESCRIPTION: AC-DC POWER SUPPLY date 07/24/2018│ page 2 of 8
PART NUMBER KEY
VMS-300 - X XXXX - XXX - X
Base Number
Output
“blank” = single
D = dual Output Voltage
Chasis
“blank” = U-frame
CF = enclosed with
top fan
CFS = enclosed with
rear fan
Input/Output Connectors
“blank” = terminal block/terminal block
11,3 = header/header
22 = IEC320/terminal block
32,3 = IEC320/header
INPUT
parameter conditions/description min typ max units
voltage 90 264 Vac
frequency 47 63 Hz
current at 90 Vac, cold start 5 A
inrush current at 115 Vac, cold start
at 230 Vac, cold start
35
70
A
A
power factor correction single output models pass EN61000-3-2 Class D
dual output models
--
0.95
leakage current at 264 Vac 0.3 mA
input fuse 5 A / 250 V inserted in primary
remote ON/OFF designated as INH on pin 4 of CN3, requires a low
signal to inhibit output
OUTPUT
parameter conditions/description min typ max units
load regulation single output models
dual output models
±1
±5
%
%
transient response returns to within 1% in <2.5 ms for a 50% load
change and the peak transient does not exceed 5%
start-up time at 230 Vac 1 s
hold-up time at 120 Vac, 80% load 16 ms
adjustability user adjustable ±5 %
switching frequency
PFC
PWM
PWM dual output models
50
65
45
70
75
55
kHz
kHz
kHz
fan drive 12 Vdc / 300 mA for external fan
fan fail (FF)
designated as FF on pin 3 of CN3, open collector
output rated for 28 Vdc/5 mA sink current max.,
goes high when a fan failure is detected
power good (PG)
designated as PG on pin 1 of CN3, open collector,
goes high 100-500 ms after DC regulation and
goes low at least 1ms before loss of regulation
PROTECTIONS
parameter conditions/description min typ max units
over voltage protection latch down and auto restart 130 %
over current protection auto restart 110 140 %
short circuit protection auto restart with no damage from a short on any output
over temperature protection auto restart 110 °C
Notes: 1. U-Frame & CF models
2. CFS models
3. Header output connector not
available on single 12 Vdc output
models or dual output models
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CUI Inc │ SERIES: VMS-300 │ DESCRIPTION: AC-DC POWER SUPPLY date 07/24/2018│ page 3 of 8
SAFETY & COMPLIANCE
parameter conditions/description min typ max units
isolation voltage
primary to secondary at 10 mA for 3 seconds
primary to chassis at 10 mA for 3 seconds
primary to core at 10 mA for 3 seconds
4,000
1,500
1,500
Vac
Vac
Vac
safety approvals UL 60601-1, EN 60601-1, IEC 60601-1 (Edition 3.1)
EMI/EMC EN 60601-1-2 (4th Edition), EN 55011 Class B,
EN 61000-3-(2,3), IEC 61000-4-(2,3,4,5,6,8,11)
MTBF as per MIL-HDBK-217F at 30°C 100,000 hours
RoHS 2011/65/EU
ENVIRONMENTAL
parameter conditions/description min typ max units
operating temperature see derating curve 0 70 °C
storage temperature -20 85 °C
operating humidity non-condensing 5 90 %
storage humidity non-condensing 5 95 %
vibration 5 ~ 50 Hz, acceleration ±7.35 m/s*s per axis
CONNECTORS
parameter conditions/description
input connector (CN1)
U-frame and CF
Terminal Block: Howder M3 screws 3 pin 6.35 mm center
Part No. HD-601-3P; PCB Labeling: L=Line; N=Neutral; G=Chassis Ground
Header: CHYAO SHIUNN JS-1120-05
Mating: JST VHR-5N or equivalent (5 pin, 3 used)
CFS Terminal Block: Howder HD-602-3P
Input plug: IEC320 Inlet
output connector (CN2) single output models
Terminal block: Dinkle P830N, M5 screws
Header: CHYAO SHIUNN JS-1120-06
Mating: JST VHR-6N or equivalent (6 pin)
dual output models Terminal block: Howder HD-816-3P, M3 screws
output pin assignment single output models Terminal block: Pin 1 = -V, Pin 2 = +V
Header: Pins 1~3 = V-, Pins 4~6 = V+
dual output models Terminal block: Pin 1 = V2, Pin 2 = RTN, Pin 3 = V1
logical signal connector (CN3) Mating JST XHP-4 or equivalent (CHYAO SHIUNN JS-2001-04);
Mating Pins: JST SXH-002T-P0.6 FOR AWG 30 to 26
fan driver connector (FAN1) Mating connector is JST P/N XHP-3 (3 pins 0.98 pitch) or equivalent (CHYAO SHIUNN JS-2001-03)
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CUI Inc │ SERIES: VMS-300 │ DESCRIPTION: AC-DC POWER SUPPLY date 07/24/2018│ page 4 of 8
DERATING CURVE
100
80
60
40
20
Ambient Temperature (°C)
Temperature Derating Curve
Load (%)
10 20 30 40 50 60 70 800
Single Output
U-Frame at 300 W max. with 25 CFM forced air cooling,
at 150 W max. convection
CF up to 300 W max.
CFS up to 300 W max.
Dual Output
U-Frame at 240 W max. with 25 CFM forced air cooling,
at 120 W max. convection
CF up to 240 W max.
CFS up to 240 W max.
MECHANICAL
parameter conditions/description min typ max units
dimensions
U-Frame: 127 x 81.28 x 38.1 (5 x 3.2 x 1.5 inch)
CF: 127 x 81.28 x 50.8 (5 x 3.2 x 2 inch)
CFS: 165.1 x 81.28 x 40.64 (6.5 x 3.2 x 1.6 inch)
mm
mm
mm
weight
U-frame
CF
CFS
500
600
650
g
g
g
MECHANICAL DRAWING - SINGLE OUTPUT MODELS
units: mm[inch]
U-FRAME
Note: 1. Mounting hole max screw depth is 4.0mm (M3x0.5 Inserts).
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CUI Inc │ SERIES: VMS-300 │ DESCRIPTION: AC-DC POWER SUPPLY date 07/24/2018│ page 5 of 8
81.28 [3.20]
165.10 [6.50]
114.30 [4.50] 6.35 [0.25]
68.58 [2.70] 44.52 [1.75]
64.77 [2.55]
8.26 [0.32]
40.64 [1.60]
19.05 [0.75]
81.28 [3.20]
40.64 [1.60]
MECHANICAL DRAWING - SINGLE OUTPUT MODELS (CONTINUED)
units: mm[inch]
CF
units: mm[inch]
CFS
Note: 1. Mounting hole max screw depth is 4.0mm (M3x0.5 Inserts).
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CUI Inc │ SERIES: VMS-300 │ DESCRIPTION: AC-DC POWER SUPPLY date 07/24/2018│ page 6 of 8
MECHANICAL DRAWING - DUAL OUTPUT MODELS
units: mm[inch]
U-FRAME
Note: 1. Mounting hole max screw depth is 4.0mm (M3x0.5 Inserts).
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CUI Inc │ SERIES: VMS-300 │ DESCRIPTION: AC-DC POWER SUPPLY date 07/24/2018│ page 7 of 8
19.05 [0.75]
165.10 [6.50]
114.30 [4.50] 6.35 [0.25]
68.58 [2.70] 44.52 [1.75]
64.77 [2.55]
8.26 [0.32]
81.28 [3.20]
40.64 [1.60]
81.28 [3.20]
40.64 [1.60]
MECHANICAL DRAWING - DUAL OUTPUT MODELS (CONTINUED)
units: mm[inch]
CF
units: mm[inch]
CFS
Note: 1. Mounting hole max screw depth is 4.0mm (M3x0.5 Inserts).
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CUI Inc │ SERIES: VMS-300 │ DESCRIPTION: AC-DC POWER SUPPLY date 07/24/2018│ page 8 of 8
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.
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20050 SW 112th Ave.
Tualatin, OR 97062
800.275.4899
Fax 503.612.2383
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techsupport@cui.com
rev. description date
1.0 initial release 08/14/2012
1.01 updated part number key, derating curve, misc. updates 09/24/2012
1.02 updated spec 04/25/2013
1.03 updated spec 07/03/2013
1.04 removed connector options 08/05/2013
1.05 added connector options 10/21/2013
1.06 added 2 mounting holes for internal fan on “CF” models 04/23/2015
1.07 updated datasheet 05/05/2016
1.08 updated to safety Edition 3.1 and EMC 4th Edition 07/24/2018
The revision history provided is for informational purposes only and is believed to be accurate.
REVISION HISTORY
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