DS450-3/DS550-3 Data Sheet

Logic Control

PS_ON /L(Power supply enable) The power supply output will be enabled when this signal is pulled low (< 0.8 V).

HIGH = Output V1 OFF

LOW = Output V1 ON

VIN_GOOD/H (Input OK)

Active High signal asserted when the input voltage rises above the min input voltage specified.

This signal is internally pulled up through 4.7 K ohms to the 3.3 V housekeeping voltage.

POK/H (Output OK)

Active High signal asserted when the output is within regulation. This signal is internally pulled up through 1.0 K

ohms to the 3.3 V housekeeping voltage.

TACH_1

This open collector signal generates two pulses per each fan revolution. This signal is eternally pulled up to the

housekeeping voltage.

PS_KILL

This signal will cause the output to shut down when drive high (> 24 V) or left floating. The PS_KILL will cause the

output to latch off and requires recycle of PS_ON or DC input to reset.

Environmental Specifications

Operating temperature

+10 °C to +45 °C, able to start-up at -10 °C

Storage temperature

-40 °C to +70 °C

Altitude, operating

10,000 ft.

Electromagnetic susceptibility/Input transients

- EN61000-3-2, -3-3

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

- EN55024:1998

RoHS & lead-free compliant (no tantalum caps.)

Humidity

20 to 90% RH, non-condensing

Shock and vibration specificatons complies with Astec Std. Specifications.

MTBF (calculated)

500k hours at full load, 25 °C

Ordering Information

Output

Nominal Output

Voltage Set Point

Set Point

Tolerance

Total

Regulation

Minimum

Current

Maximum

Current

Output Ripple

P/P

Over Current

Options

DS450DC-3

12.0 Vdc

3.3 Vsb

± 0.2%

± 1%

+5/-3%

+5/-4%

0 A

0 A

37.0 A

3.0 A

120 mV

60 mV

39.5 - 44.4%

4.9 A Avg, 7 A max

Standard

DS450DC-3-002

12.0 Vdc

3.3 Vsb

± 0.2%

± 1%

+5/-3%

+5/-4%

0 A

0 A

37.0 A

3.0 A

120 mV

60 mV

39.5 - 44.4%

4.9 A Avg, 7 A max

Reverse Air

DS550DC-3

12.0 Vdc

3.3 Vsb

± 0.2%

± 1%

+5/-3%

+5/-4%

0 A

0 A

45.0 A

3.0 A

120 mV

60 mV

48.0A - 54.0A

4.9 A Avg, 7 A max

Standard

DS550DC-3-003

12.0 Vdc

3.3 Vsb

± 0.2%

± 1%

+5/-3%

+5/-4%

0 A

0 A

45.0 A

3.0 A

120 mV

60 mV

48.0A - 54.0A

4.9 A Avg, 7 A max

Reverse Air

*Over current latches off if overcurrent lasts over 1 second, otherwise it is auto recovery.

*For 5 Vsb, please contact marketing department.