Embedded Power for
Business-Critical Continuity
LPS350 Series
350 Watts
Special Features
•Activepowerfactorcorrection
•IECEN61000-3-2compliance
•Remotesenseon1stand4th
output
•Powerfailandremoteinhibit
•Singlewirecurrentsharing
•Built-inEMIfilter
•Adjustablefloating4thoutput
•2Supervisoryoutput5Vand
12V
•Overvoltageprotection
•Overloadprotection
•Thermaloverloadprotection
•DCpowergood
•135khzswitchingfrequency
•Cover-C
•Optionalwithfancover-CF
•Optionalend-mountedfan-CEF
Total Power: 350 Watts
Input Voltage: 85-264Vac
120 - 300 Vdc
# of Outputs: Quad
Electrical Specifications
Safety
Input
Inputrange 85-264VAC;120-300VDC
Frequency 47-440Hz
Inrushcurrent 38Amax,coldstart@25°C
Efficiency 75%typicalatfullload
EMIfilter FCC Class B conducted and radiated
CISPR22ClassBconductedandradiated
EN55022ClassBconductedandradiated
VDE0878PT3ClassBconductedandradiated
Power factor 0.99 typical
Safetyground
leakagecurrent
0.5mA@50/60Hz,264VACinput
Output
Maximumpower Withcover:350Wwith30CFMforcedair,(-C)(-CF)(-CEF)
Adjustmentrange ±5%min.onmain:3.3-24Vonoutput4
Supervisoryoutput 5V@500mAregulated,12@150mAx2
Hold-uptime 20ms@350Wload,115VACnominalline
Overloadprotection Shortcircuitprotectiononalloutputs.Caseoverloadprotected@
110-145%abovepeakrating
Overvoltageprotection 5Voutput:5.7-6.7VDC
VDE 0805/EN60950(IEC950)
21310-3336-0001
UL UL1950 EI86249
CSA CSA22.2-234Level5
LR109492C
NEMKO EN60950/EMKO-TUE
P97102061(74-sec)203
BABT EN60950/BS7002607019
CB Cer tificate and report
4048,4049
CE Mark(LVD)
Rev. 10.15.07
LPQ350 Series
1 of 3
Embedded Power for
Business-Critical Continuity
OrderingInformation
Model
Number Output
Voltage Minimum
Load Maximum Load with
Convection Cooling Peak Load 1Regulation 2Ripple P/P
(PARD)3
LPQ352-C +5V
+12V
-12V
3.3-24V
5A
0A
0A
*1A
50A
12A
6A
6A
60A
14A
8A
8A
±2%
±3%
±3%
±3%
50mV
120mV
120mV
240mV1max.
LPQ353-C +5V
+15V
-15V
3.3-24V
5A
0A
0A
*1A
50A
12A
6A
6A
60A
14A
8A
8A
±2%
±3%
±3%
±3%
50mV
150mV
150mV
240mV1max.
1.Peakcurrentlasting<30secondswithamaximum10%dutycycle.
2.At25°Cincludinginitialtolerance,linevoltage,loadcurrentsandoutputvoltagesadjustedtofactory
settings.
3.Peak-to-peakwith20MHzbandwidthand10µFinparallelwitha0.1µFcapacitoratratedlinevoltage
andloadranges.
4.4thoutput3.3-24Vfactorysetat5V.
5.*Minimumloadrequiredwhentheoutputissetbelow5volts.
6.IfoptionalCForCEFfansarenotused,30CFMforcedaircoolingneedstobeprovidedandisrequired
throughthelengthofthepowersupply.Notconvectionrated.
7.RemoteinhibitresetsOVPlatch
Note:-CFsuffixaddedtothemodelnumberindicatescoverwithfan,
-CEFsuffixaddedtomodelnumberindicatesend-mountedfanchassis.
Rev. 10.17.07
LPQ350 Series
2 of 3
Operatingtemperature: 0°to50°Cambient;
derateeachoutputat2.5%perdegreefrom50°to70°C
Storagetemperature: -40°Cto+85°C
Temperaturecoefficient: ±0.4%per°C
Electromagnetic
susceptibility:
DesignedtomeetIEC801,-2,-3,-4,-5,-6,Level3
Humidity: Operating;non-condensing5%to95%
Vibration: Threeorthogonalaxes,sweepat1oct/min,5min.
dwellatfourmajorresonances0.7Gpeak5Hzto500Hz,operational
MTBFdemonstrated: >550,000hoursatfullloadand25°Cambientconditions
EnvironmentalSpecifications
LogicControl
Power failure TTLlogicsignalgoeshigh50-150msecafter5Voutput.Itgoeslow
atleast4msecbeforelossofregulation
Remoteon/off Requiresanexternalcontact(N.OorN.C)toinhibitoutputs
DC-OK TTLlogicgoeshigh50-150msecafter5Voutput.Itgoeslowwhen
thereislossofregulation
Remotesense Compensatesfor0.5Vleaddropmin.Willoperatewithoutremote
senseconnected.Reverseconnectionprotected
Mating Connectors
SK3 Molex:22-01-1084
PINS:08-70-0057
SK4 Molex22-01-3027
PINS:08-50-0114
SK5 Molex22-01-3027
PINS:08-50-0114
SK6 Molex22-01-3027
PINS:08-50-0114
AstecConnectorKit#70-841-011,includesallofthe
above.
PinAssignments
SK1 PIN1 Neutral
PIN2 Line
PIN3 Ground
SK2 PIN1 +12/15V
PIN2 Common
PIN3 Common
PIN4 -12/15V
PIN5 3.3-25VRETFloat
PIN6 3.3-25VFloat
SK3 PIN1 +SenseV4
PIN2 -SenseV4
PIN3 +SenseV1
PIN4 -SenseV1
PIN5 POK
PIN6 C.Share
PIN7 DC-OK
PIN8 Inhibit(N.O.)
PIN9 Inhibit(N.C.)
PIN10 COM
SK4 PIN1 +Fan1
(12V@150mA)
PIN2 – Common
SK5 PIN1 +5Vaux
(5V@100mA)
PIN2 – Common
SK6 PIN1 +Fan2
(12V@150mA)
PIN2 – Common
Embedded Power for
Business-Critical Continuity
Rev. 10.17.07
LPQ350 Series
3 of 3
MechanicalDrawing
5.0 (127.0) 2.5
(63.5)
1.18 (30.0)
3.5
(88.9)
Optional 
(-CEF) 
Cover 
with fan
9.0
(228.6)
6.64
(168.6)
3.42 (87.0)
.79
(20)
SK1
3 2 1
SK5 5V aux
+ve -ve
Terminal
Block TB1
SK4 fan
#6-32 UNC (8 places)
5.46
(138.6)
8.52
(216.4)
M3 (4 places)
3.68
(93.6)
3.15
(80)
2.17
(55)
.55
(14) 1.30
(33.0)
Optional
(-CF)
Cover 
with Fan
10.78
(273.8)
J1
.24 (6.1)
6-32 (2 places)
Main Output
SK3
12345678910
SK6
SK2
6 5 4 3 2 1
6-32 (3 places)
M3
(6 places)
Top pot.
=V4 adjust
Bottom pot.
=V1 adjust
Notes:
1. Specificationssubjecttochangewithoutnotice.
2. Alldimensionsininches(mm),tolerance±.02”.
3. Specificationsareatfactorysettings
4. ToenablenormallyclosedRemoteInhibit,cutJumperJ1.
5. Mountingmaximuminsertiondepthis0.12”.
6. Warranty:2year
7. Weight:4lb./1.8kg.
Americas
5810VanAllenWay
Carlsbad,CA92008
USA
Telephone:+17609304600
Facsimile: +17609300698
Europe (UK)
WaterfrontBusinessPark
MerryHill,Dudley
WestMidlands,DY51LX
UnitedKingdom
Telephone:+44(0)1384842211
Facsimile: +44(0)1384843355
Asia (HK)
14/F,LuPlaza
2WingYipStreet
KwunTong,Kowloon
HongKong
Telephone:+85221763333
Facsimile: +85221763888
Forglobalcontact,visit:
www.Emerson.com/EmbeddedPower
techsupport.embeddedpower
@emerson.com
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