Technical Product Specification

Power Sub-system Intel® Server Chassis SC5650 TPS

Revision 1.2

Intel order number E39531-004

The pass criteria included: No unsafe operation allowed under any condition; all power supply

output voltage levels remain within proper spec levels; no change in operating state or loss of

data during and after the test profile; no component damage under any condition.

The power supply complies with the limits defined in EN55024: 1998 using the IEC 61000-4-

5:1995 test standard and performance criteria B defined in Annex B of CISPR 24.

2.2.2.8 AC Line Dropout / Holdup

The following are the AC dropout requirements.

Table 32. Holdup Requirements

Loading Holdup Time

100% 12 msec

60% 20 msec

An AC line dropout is defined to be when the AC input drops to 0VAC at any phase of the AC

line for any length of time. During an AC dropout condition, the power supply meets dynamic

voltage regulation requirements. An AC line dropout of any duration will not cause tripping of

control signals or protection circuits. If the AC dropout lasts longer than the hold-up time, the

power supply recovers and meets all turn-on requirements. The power supply meets the AC

dropout requirement over rated AC voltages and frequencies. A dropout of the AC line for any

duration will not cause damage to the power supply.

2.2.2.8.1 AC Line 5VSB Holdup

The 5 VSB output voltage stays in regulation under its full load (static or dynamic) during an AC

dropout of 70 ms min (=5VSB holdup time) whether the power supply is in an ON or OFF state

(PSON asserted or de-asserted).

2.2.2.9 AC Line Fast Transient (EFT) Specification

The power supply meets the EN61000-4-5 directive and any additional requirements in

IEC1000-4-5: 1995 and the Level 3 requirements for surge-withstand capability, with the

following conditions and exceptions:

 These input transients do not cause any out-of-regulation conditions, such as overshoot

and undershoot, nor do they cause any nuisance trips of any of the power supply

protection circuits.

 The surge-withstand test must not produce damage to the power supply.

 The supply meets surge-withstand conditions under maximum and minimum DC-output

load conditions.

2.2.2.10 AC Line Leakage Current

The maximum leakage current to ground for each power supply should not be more then 3.5mA

when tested at 240 VAC.