Rev. 10.13.09_79

DS450DC/DS550DC

 of 4

Embedded Power for

Business-Critical Continuity

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

*Overcurrentlatchesoffifovercurrentlastsover1second,otherwiseitisautorecovery.

*For5Vsb,consultmarketing.

LogicControl

PS_ON/L:

(Power supply enable)

Thepowersupplyoutputwillbeenabledwhenthissignalispulledlow(<0.8V).

HIGH=OutputV1OFF

LOW=OutputV1ON

VIN_GOOD/H(InputOK):

ActiveHighsignalassertedwhentheinputvoltagerisesabovethemininput

voltagespecified.

Thissignalisinternallypulledupthrough4.7Kohmstothe3.3Vhousekeeping

voltage.

POK/H(OutputOK):

ActiveHighsignalassertedwhentheoutputiswithinregulation.Thissignalis

internallypulledupthrough1.0Kohmstothe3.3Vhousekeepingvoltage.

TACH_1:

Thisopencollectorsignalgeneratestwopulsespereachfanrevolution.This

signaliseternallypulleduptothehousekeepingvoltage.

PS_KILL:

Thissignalwillcausetheoutputtoshutdownwhendrivehigh(>24V)orleft

floating.ThePS_KILLwillcausetheoutputtolatchoffandrequiresrecycleof

PS_ONorDCinputtoreset.

DigitalControl:

Operatingtemperature:

-10°Cto50°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