Intel SC5299BRP Technical Product Specification page 30

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Intel Entry Server Chassis SC5299-E TPS
less (20ms min) does not cause any tripping of control signals or protection circuits (= 20ms
holdup time requirement). If the AC dropout lasts longer than one cycle, the power will recover
and meet all turn on requirements. The power supply meets the AC dropout requirement over
rated AC voltages, frequencies, and output loading conditions. Any dropout of the AC line does
not cause damage to the power supply.
2.1.4.3.1 AC Line 5VSB Holdup
The 5VSB output voltage stays 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 the ON or OFF state
(PSON asserted or de-asserted).
2.1.4.4 AC Line Fuse
The power supply has a single line fuse on the Line (Hot) wire of the AC input. The line fusing is
acceptable for all safety agency requirements. The input fuse is a slow blow type. AC inrush
current does not cause the AC line fuse to blow under any conditions. All protection circuits in
the power supply do not cause the AC fuse to blow unless a component in the power supply has
failed. This includes DC output load short conditions.
2.1.4.5 AC Inrush
AC line inrush current does not exceed 65A peak for up to 10ms, after which, the input current
is no more than the specified maximum input current at 265Vac input, 25 degrees C and full
load. The peak inrush current is less than the ratings of its critical components (including input
fuse, bulk rectifiers, and surge limiting device). For 10ms to 150ms, the inrush current should be
less than 25A peak.
The power supply meets the inrush 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
current may reach up to 60A peak for up to 1 ms.
2.1.4.6 AC Line Surge
The power supply is tested with the system for immunity to AC Ringwave and AC Unidirectional
wave, both up to 2kV, per EN 55024:1998, EN 61000-4-5:1995 and ANSI C62.45: 1992.
The power supply complies with the limits defined in EN 55024: 1998 using the IEC 61000-4-
5:1995 test standard and performance criteria B defined in Annex B of CISPR 24.
2.1.4.7 AC Line Transient Specification
AC line transient conditions are defined as "sag" and "surge" conditions. "Sag" conditions are
also commonly referred to as "brownout": these conditions will be defined as the AC line voltage
dropping below nominal voltage conditions. "Surge" will be defined to refer to conditions when
the AC line voltage rises above nominal voltage.
The power supply meets the requirements under the following AC line sag and surge conditions.
Revision 3.1
Intel order number D37594-005
Power Sub-system
). AC line inrush
op
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