Ac Inrush; 2.6.7 Ac Line 5Vsb Holdup; Ac Line Leakage Current; Power Factor Correction - Intel SR1500 - AXXMINIDIMM DDR-2 RAID Controller Cache Memory Manual

Intel® Server System SR1550AL
2.6.6

AC Inrush

The peak AC inrush current shall be less than 40A peak for one-quarter of the AC cycle. The
power supply must meet the AC inrush current requirements for any rated AC voltage, during
turn-on at any phase of AC voltage, during a single cycle AC dropout condition as well as upon
recovery after AC dropout of any duration, and over the specified temperature range T
(includes hot and cold inrush). It is acceptable that AC line inrush current may reach up to 60A
peak for up to 1msec.

2.6.7 AC Line 5VSB Holdup

The 5VSB output voltage should stay in regulation under its full load (static or dynamic) during
an AC dropout of 70ms min (=5VSB holdup time) whether the power supply is in ON or OFF
state (PSON asserted or de-asserted).
2.6.8

AC Line Leakage Current

The maximum leakage current to ground for each power supply shall be not more then 3.5mA
when tested at 240VAC.
2.6.9

Power Factor Correction

The power supply shall incorporate a Power Factor Correction circuit. The power supply shall be
tested as described in EN 61000-3-2: Electromagnetic Compatibility (EMC) Part 3: Limits-
Section 2: Limits for harmonic current emissions, and shall meet the harmonic current emissions
limits specified for ITE equipment. The power supply shall be tested as described in JEIDA MITI
Guideline for Suppression of High Harmonics in Appliances and General-Use Equipment and
shall meet the harmonic current emissions limits specified for ITE equipment.
2.7

DC Output Specification

2.7.1

Output Power / Currents

These are the power requirements for the power supply module.
1. The two 40mm fans shall be powered from 5VSB when in standby mode.
2. +5VSB provides power to the two 40mm fans cooling the power supplies in standby mode. 1A of 5VSB is reserved for
power fan in standby mode.
3. Vbias max load based on PDB circuits. This output is optional depending if the PDB requires a higher voltage to power its
240VA circuits.
4. Peak current time duration doesn't exceed 12 sec
2.7.2

Voltage Regulation

The power supply output voltages must stay within the following voltage limits when operating at
steady state and dynamic loading conditions. These limits include the peak-peak ripple/noise.
All outputs are measured with reference to the return remote sense signal (ReturnS). The +12V
and +5Vsb voltages are measured at the PDB output harness connector.
Revision – 1.3

Table 12. Power Supply Module Load Ratings

Voltage Min
+12 V 0 A
1,2
+5 VSB 0.1 A
3
Vbias 0 A
Intel order number D31982-006
650W
Max Peak
4
54 A 61 A
3.0 A 3.5 A
See note ---
Power Sub-system
,
op
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