DS1050 Data Sheet

Logic Control

PS_SEATED (A4)

TTL logic LOW if power supply is seated into system connector. This is a short pin. A logic HIGH if the PSU is removed

PWR GOOD (C3)

Active TTL high when output is within regulation limits.

AC OK (B1)

A low logic level if the input voltage is within allowable limits. A TTL logic HIGH level, and a 5mS early warning signal

before 12.0 V DC output loss of regulation.

PS_INHIBIT/PS_KILL (B4)

This signal is connected to a short pin on the PSU

When left open power supply operation will be inhibited. When the power supply is inserted into the system, this pin

will be pull low by the system and turn the power supply on only after all other power supply pins have seated.

PS ON (A1)

The output will be enabled when this signal is pulled low, below 0.8 V outputs disabled when pin is driven high or left

open.

Environmental Specifications

Operating temperature

-10 °C to 50 °C ; 50% power derating at 70 °C

Storage temperature

-40 °C to +85 °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

Standard operating/non-operating random shock/vibration

MTBF (Demonstrated)

500K Hrs at full load, 40 °C

Ordering Information

Model Number Nominal Output

Voltage Set Point

Set Point

Tolerance

Total

Regulation

Minimum

Current

Maximum

Current

Output Ripple

P/P

Over Current

Standby**

Air Flow

DS1050-3

12.0 Vdc

±0.2%

±5%

0 A

87 A

120 mV

102.7 A - 128.4 A 3.3 V @ 4 A

STD

DS1050-3-001

12.0 Vdc

±0.2%

±5%

0 A

87 A

120 mV

102.7 A - 128.4 A 3.3 V @ 4 A

REV

DS1050-3-002

12.0 Vdc

±0.2%

±5%

0 A

87 A

120 mV

102.7 A - 128.4 A 5.0 V @ 2.5 A

STD

DS1050-3-003

12.0 Vdc

±0.2%

±5%

0 A

87 A

120 mV

102.7 A - 128.4 A 5.0 V @ 2.5 A

REV

*Overcurrent latches off if overcurrent lasts over 1 seconds, otherwise it is auto recovery.

** 3.3 V standby can operate at 6 A, but overall unit efficiency will fall slightly below Gold Standard.