Zero Load Stability Requirements; Hot Swap Requirements; Forced Load Sharing; Ripple/Noise - Intel S2600KPFR Product Specifications

Technical Product Specification
13.2.11

Zero Load Stability Requirements

When the power subsystem operates in a no load condition, it does not need to meet the
output regulation specification, but it must operate without any tripping of over-voltage or
other fault circuitry. When the power subsystem is subsequently loaded, it must begin to
regulate and source current without fault.
13.2.12

Hot Swap Requirements

Hot swapping a power supply is the process of inserting and extracting a power supply from
an operating power system. During this process the output voltages shall remain within the
limits with the capacitive load specified. The hot swap test must be conducted when the
system is operating under static, dynamic, and zero loading conditions.
13.2.13

Forced Load Sharing

The +12V output will have active load sharing. The output will share within 10% at full load.
The failure of a power supply should not affect the load sharing or output voltages of the
other supplies still operating. The supplies must be able to load share in parallel and operate
in a hot-swap/redundant 1+1 configurations. The 12VSBoutput is not required to actively
share current between power supplies (passive sharing). The 12VSBoutput of the power
supplies are connected together in the system so that a failure or hot swap of a redundant
power supply does not cause these outputs to go out of regulation in the system.
13.2.14

Ripple/Noise

The maximum allowed ripple/noise output of the power supply is defined in the following
table. This is measured over a bandwidth of 10Hz to 20MHz at the power supply output
connectors. A 10F tantalum capacitor in parallel with a 0.1F ceramic capacitor is placed at
the point of measurement.
13.2.15

Timing Requirement

These are the timing requirements for the power supply operation. The output voltages must
rise from 10% to within regulation limits (T
rise from 1.0 to 25ms. All outputs must rise monotonically. The following table shows the
timing requirements for the power supply being turned on and off through the AC input, with
PSON held low and the PSON signal, with the AC input applied.
Revision 1.37

Table 75. Ripples and Noise

+12V main +5VSB
120mVp-p 50mVp-p
vout_rise
Power Supply Specification Guidelines
+12VSB
120mVp-p
) within 5 to 70ms. For 5VSB, it is allowed to
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