Table 20. Holdup Requirements - Intel SC5650HCBRP Product Specification

Intel® Server System SC5650HCBRP TPS
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.
4.1.2.8.1 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).
4.1.2.9 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.
4.1.2.10 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.
4.1.2.11 Power Recovery
The power supply recovers automatically after an AC power failure. AC power failure is defined
to be any loss of AC power that exceeds the dropout criteria.
4.1.2.11.1 Voltage Brown Out
The power supply complies with the limits defined in EN55024: 1998 using the IEC 61000-4-
11:1995 test standard and performance criteria C defined in Annex B of CISPR 24.
In addition, the power supply meets the following Intel Requirement:
Revision 1.2

Table 20. Holdup Requirements

Loading
100%
60%
Intel order number E81443-002
Holdup Time
12 msec
20 msec
Power Sub-system
61