Rev. 12.15.08

DS450DC/DS550DC

2 of 4

Embedded Power for

Business-Critical Continuity

Table1

OrderingInformation

Output

NominalOutput

VoltageSetPoint

Set Point

Tolerance

Total

Regulation

Minimum

Current

Maximum

Current

OutputRipple

P/P

OverCurrent

Options

DS450DC-3

12.0vdc

3.3vsb

±0.2%

±1%

+5/-3%

+5/-4%

0A

0A

37.0A

3.0A

120mV

60mV

39.5-44.4%

4.9AAvg,7Amax

Standard

DS450DC-3-002

12.0vdc

3.3vsb

±0.2%

±1%

+5/-3%

+5/-4%

0A

0A

37.0A

3.0A

120mV

60mV

39.5-44.4%

4.9AAvg,7Amax

ReverseAir

DS550DC-3

12.0vdc

3.3vsb

±0.2%

±1%

+5/-3%

+5/-4%

0A

0A

45.0A

3.0A

120mV

60mV

48.0A-54.0A

4.9AAvg,7Amax

Standard

DS550DC-3-003

12.0vdc

3.3vsb

±0.2%

±1%

+5/-3%

+5/-4%

0A

0A

45.0A

3.0A

120mV

60mV

48.0A-54.0A

4.9AAvg,7Amax

ReverseAir

*Overcurrentlatchesoffifovercurrentlastsover1seconds,otherwiseitisautorecovery.

*For5vsb,consultmarketing.

LogicControl

PS_ON/L

(Power supply enable)

Thepowersupplyoutputwillbeenabledwhenthissignalis

pulledlow(<0.8V).

HIGH=OutputV1OFF

LOW=OutputV1ON

VIN_GOOD/H(InputOK)

ActiveHighsignalassertedwhentheinputvoltagerisesabove

themininputvoltagespecified.

Thissignalisinternallypulledupthrough4.7Kohmstothe

3.3Vhousekeepingvoltage.

POK/H(OutputOK)

ActiveHighsignalassertedwhentheoutputiswithinregula-

tion.Thissignalisinternallypulledupthrough1.0Kohmsto

the3.3Vhousekeepingvoltage.

TACH_1

Thisopencollectorsignalgeneratestwopulsespereachfan

revolution.Thissignaliseternallypulleduptothe

housekeepingvoltage.

PS_KILL

Thissignalwillcausetheoutputtoshutdownwhendrivehigh

(>24V)orleftfloating.ThePS_KILLwillcausetheoutputto

latchoffandrequiresrecycleofPS_ONorDCinputtoreset.

DigitalControl

Operatingtemperature:

+10°to45°C(50%powerderatingat70°C)

Storagetemperature:

-40°Cto+70°C

Altitude,operating:

10,000ft.

Electromagnetic

susceptibility/Inputtransients:

-EN61000-3-2,-3-3

-EN61000-4-2,4.3,4-4,-4-5,4-11Level

-EN55024:1998

RoHS&lead-freecompliant(notantalumcaps.)

Humidity:

20to90%RH,non-condensing

ShockandvibrationspecificatonscomplieswithAstecStd.Specifications,Q3205

MTBF(observed)

500KHrsat80%,40°C

EnvironmentalSpecifications