Intel S2600GZ S2600GZ/GL - Page 119

Power Supply Specification Guidelines Intel® Server Board S2600GZ/GL TPS 11.2.9 Common Mode Noise The Common Mode noise on any output shall not exceed 350mV pk-pk over the frequency band of 10Hz to 20MHz. 11.2.10 Soft Starting The Power Supply shall contain control circuit which provides monotonic soft start for its outputs without overstress of the AC line or any power supply components at any specified AC line or load conditions. 11.2.11 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. 11.2.12 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. 11.2.13 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 hotswap/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. 11.2.14 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. Table 52. Ripples and Noise +12V main 120mVp-p +12VSB 120mVp-p 106 Revision 1.1 Intel order number G24881-004