POWER

DS650DC-3/DS850DC-3

Distributed Power Bulk Front-End

Total Output Power: 650 - 850 Watts

+3.3vdc Stand-by Output

Standard Telco input range -39 V to

-72 VDC

Special FeatureS

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1U X 2U form factor

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+12Vdc output

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+3.3vdc stand-by (5V standby - consult

factory)

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No minimum load required

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Hot plug operation

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N + 1 redundant

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Internal OR’ing fets

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Active current sharing

2PSU shared from 30% to 100%

4PSU shared from 20% to100%

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Built-in cooling fan (40mm x 28mm)

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EEPROM for FRU data

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Amber/green bi-color LED status

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Internal fan speed control

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Fan fail tach output signal

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One year warranty

SaFety

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UL/cUL 60950 (UL recognized)

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NEMKO+ CB report EN60950

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CE mark

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China CCC

Electrical Specifications

Input

Input range:

-40 Vdc to -75 Vdc

Efficiency:

> 80% typical

Conducted EMI:

FCC Subpart J EN55022 Class B

Radiated EMI:

FCC Subpart J EN55022 Class B

Hold up time:

1 ms @48 Vdc

Output

Main DC voltage:

+12 V @ 70 A; DS850DC

+12 V @ 52.5 A; DS650DC

Stand-By:

+3.3 Vsb @ 6A (5V @ 4A available)

Adjustment range:

Factory Set, no pot adjustments

Regulation:

+12 Vdc; +5%/-5%

+3.3 Vsb; +5%/-5%

Overcurrent:

+12 Vdc; 77A - 105A - DS850DC;

+12 Vdc 57.75 A - 78.75 A; DS650DC

latches off if overcurrent lasts over 1 second, otherwise it is auto

recovery.

+3.3 vsb, 9A max (hiccup mode)

Overvoltage:

+12 Vdc; 13.2 - 14.4 Vdc

+3.3 Vsb; 3.76 - 4.30 Vdc

Under voltage:

+12 Vdc; 9 - 10.8V (latch off)

Turn-on delay:

2 Second max

+12VOutput Rise Time:

10 - 300 mS, Monotonic Rise

Data Sheet

DC Input

Connector input shown