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date 04/23/2013
page 1 of 5
SERIES: VF-S320-XXA │ DESCRIPTION: AC-DC POWER SUPPLY
Notes: 1. Maximum power must not exceed 180 W with convection cooling or 320 W for forced air.
2. With external 22 CFM fan.
3. 1% minimum load is required to maintain the ripple and regulation.
4.Rippleandnoiseismeasuredfrom10KHzto20MHzatoutputterminalswitha0.1μFceramiccapacitoranda22μFelectrolyticcapacitorinparallel.
PART NUMBER KEY
VF - S320 - XX A - X
Base Number
Output Voltage
FEATURES
• up to 320 W continuous power w/ 22 CFM forced air
•700Wpeakpowerwithin500µsdutyduration
• passive power factor correction
• power good signal
• 3,000 Vac isolation voltage
• over load, over voltage, over temperature, and short circuit protections
•UL,cUL,andTUV60950-1safetyapprovals
•efficiencyupto83%
RoHS
Input/Output connector:
“blank” = Terminal block input / Terminal block output
1 = Molex input / Molex output
2 = Molex input / Terminal block output
3 = Terminal block input / Molex output
MODEL output
voltage
output
current
output
power1
ripple and
noise 3,4
efciency
(Vdc)
max
(A)
max w/
airow2
(A)
max
(W)
max w/
airow2
(W)
max
(mVp-p)
typ
(%)
VF-S320-05A 5 27.28 45 136 225 50 75%
VF-S320-09A 9 16.37 29.1 147 262 90 83%
VF-S320-12A 12 15 26.67 180 320 120 80%
VF-S320-15A 15 12 21.33 180 320 150 83%
VF-S320-18A 18 10 17.78 180 320 180 83%
VF-S320-24A 24 7.5 13.33 180 320 240 83%
VF-S320-28A 28 6.43 11.43 180 320 280 83%
VF-S320-36A 36 5 8.89 180 320 360 83%
VF-S320-48A 48 3.75 6.67 180 320 480 83%
VF-S320-54A 54 3.33 5.93 180 320 540 83%
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CUI Inc │ SERIES: VF-S320-XXA │ DESCRIPTION: AC-DC POWER SUPPLY date 04/23/2013 │ page 2 of 5
INPUT
parameter conditions/description min typ max units
voltage 90-132/180-264 auto selectable 90/180 132/264 Vac
frequency 47 63 Hz
current at 100~120 Vac, cold start
at 200~240 Vac, cold start
6
3
A
A
inrush current at 115 Vac, cold start
at 230 Vac, cold start
35
70
A
A
power factor Compliant to EN 61000-3-2 class A
OUTPUT
parameter conditions/description min typ max units
line regulation low line to high line ±1 %
load regulation all other outputs ±1 %
temperaturecoefcient 0.25 mV/°C
transient response Output voltage returns to within 1% in less than 2.5 ms for a 50% load change.
Peak transient does not exceed 5%.
start-up time At 120 Vac 1 s
rise time 0.2 20 ms
hold-up time At 120 Vac and 80% of rated maximim load 20 ms
adjustability ±5 %
power good
Designated as PG on the CN3.
This signal goes TTL high 100-500 ms after the output reaches regulation.
It goes low at least 1 mS before loss of regulation.
fan drive 12 Vdc / 400 mA for external fan
PROTECTIONS
parameter conditions/description min typ max units
over voltage protection ACinputneedstoberesettorestartthepowersupply. 130 %
over current protection automaticallyrecovers 110 140
short circuit protection shortcircuitcanbecontinuous,recoversautomaticallyuponremovalofshort
over temperature protection autorecovery 85 °C
SAFETY & COMPLIANCE
parameter conditions/description min typ max units
isolation voltage
applied for 3 seconds at 10 mA max.
primarytosecondary
primarytotransformercore
primarytoearthchassis
3,000
1,500
1,500
Vac
Vac
Vac
safetyapprovals UL 60950-1, CSA C22.2 No. 60950-1-03, TUV EN 60950-1, CE Mark (LVD)
EN 61000-3-(2,3) & IEC 61000-4 Series regulations and CB
EMI/EMC pass FCC Part 15, CISPR 22 class B, conducted
leakage current at 240 Vac
at 120 Vac
500
300
μA
μA
RoHS compliant yes
MTBF according to MIL-HDBK-217 at 30 ºC 100,000 hrs
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CUI Inc │ SERIES: VF-S320-XXA │ DESCRIPTION: AC-DC POWER SUPPLY date 04/23/2013 │ page 3 of 5
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 acceleration ± 7.35 M/(SxS), on X, Y and Z Axis 5 50 Hz
MECHANICAL
parameter conditions/description min typ max units
dimensions 152.40 x 101.60 x 38.10 [6 x 4 x 1.5 inch] mm
weight 600 g
100
80
60
50
40
20
Ambient Temperature (°C)
Load (%)
010203040506070
DERATING CURVES
output power vs. ambient temperature
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CUI Inc │ SERIES: VF-S320-XXA │ DESCRIPTION: AC-DC POWER SUPPLY date 04/23/2013 │ page 4 of 5
25.40 1.000
4.000101.60
25.40 1.000
(2 PLCS)
SCALE: 1:3
3.00076.20
(2 PLCS)
101.60 4.000
(2 PLCS)
L
N
G
VO+
VO-
L
N
G
VO-
UNC 8-32
(6 PLCS)
VO+
7pins 9.5mm center
M3.5 screw
terminal block optio
n
(5 pins, 3 used)
JS-1120-05
connector part no.
(10 pins)
JS-1120-10
connector part no.
A
101.60 4.000
1.50038.10
152.40 6.000
DETAIL A
SCALE 2 : 1
PG
FAN2
+-
FF RTN
CN3
MECHANICAL DRAWING
CN1
1 ground
2 ac neutral
3 ac line
CN3
1 power good
2RTN
3 fan fail
CN2
1Vo+
2Vo+
3Vo+
4Vo+
5Vo+
6Vo-
7Vo-
8Vo-
9Vo-
10 Vo-
Notes: 1. CN1 mates with JST VH series 5-pin connector.
2. CN2 mates with VH series 10-pin connector.
3. CN3 mates with JST XHP-3 or equivalent (CHYAO SHIUNN JS-2001-03) and JST SXH-002T-P0.6 mating pins
4. Fan drive connector mates with JST part no. XHP-2 or equivalent
5. Mounting hole max depth 4.00mm
units: mm[inches]
tolerance: ±0.3 mm
unlessotherwisespecied
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CUI Inc │ SERIES: VF-S320-XXA │ DESCRIPTION: AC-DC POWER SUPPLY date 04/23/2013 │ page 5 of 5
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
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techsupport@cui.com
rev. description date
1.0 initial release 05/5/2009
1.01 new template applied 12/17/2011
1.02 V-Innitybrandingremoved 08/28/2012
1.03
removed on/off information, removed low leakage option, updated spec
04/23/2013
Therevisionhistoryprovidedisforinformationalpurposesonlyandisbelievedtobeaccurate.
REVISION HISTORY
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