Instruction/ maintenance manual of the product ERP2U Intel
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SSI ERP2U (Entry Redundant Power 2U) Power Supply Design Guide A Server System Infrastructure (SSI) Specification For 2U Rack Chassis Power Supplies Version 1.
SSI ERP2 U Power Supply Design Guide, V 1.0 - 2 - Disclaimer: THIS SPECIFICATION IS PROVIDED "AS IS" WITH NO WARRANTIES WHATSOEVER, INCLUDING ANY WARRANTY OF MERCHANTABILITY, NONINFRINGEMENT, FITNESS FOR ANY PARTICULAR PURPOSE, OR ANY WARRANT Y OTHERWISE ARISING OUT OF ANY PROPOSAL, SPECIFICATION OR SAMPLE.
SSI ERP2 U Power Supply Design Guide, V 1.0 - 3 - Contents 1 Purpose .............................................................................................................................................. 5 2 Conceptual Overview ...............
SSI ERP2 U Power Supply Design Guide, V 1.0 - 4 - 8.2 PWOK (Power OK) .......................................................................................................................... 27 8.3 SMBus Communication ...............................
SSI ERP2 U Power Supply Design Guide, V 1.0 - 5 - 1 Purpose This 2U Rack Power Supply Design Guide defines a common redundant power sub - system used in 2U rack mount servers. The power sub - system is made up of a cage and hot swap redu ndant power modules.
SSI ERP2 U Power Supply Design Guide, V 1.0 - 6 - 3 Definitions/Terms/Acronyms Required The status given to i tems within this design guide, which are required to meet SSI guidelines and a large majority of system applications.
SSI ERP2 U Power Supply Design Guide, V 1.0 - 7 - 4 Mechanical Overview STATUS Required (Optional) Note: Some features are noted as optional in the enclosure drawing figure below. These features may be use in some chassis designs where only top access is allowed for the cage mounting.
SSI ERP2 U Power Supply Design Guide, V 1.0 - 8 - 4.1 Optional Chassis Mounting Features STATUS Optional The optional top access mounti ng method fastens to the system chassis via three mounting holes; two on the exterior face and one with the tab on the interior face of the cage.
SSI ERP2 U Power Supply Design Guide, V 1.0 - 9 - 4.2.1 Redundant Cooling STATUS Recommended It is recommended that the power supply cooling be redundant. This means the cooling device is located in the hot swap power supply modules or there are redundant devices located on the cage.
SSI ERP2 U Power Supply Design Guide, V 1.0 - 10 - power supplies shall continue to operate with no interruptio n of performance. It is required that all redundant power supply modules be present to support redundant AC inlets.
SSI ERP2 U Power Supply Design Guide, V 1.0 - 11 - 5.5 AC Line Dropout STATUS Required An AC line dr opout is defined to be when the AC input drops to 0 VAC at any phase of the AC line for any length of time. During an AC dropout of one cycle or less the power supply must meet dynamic voltage regulation requirements over the rated load.
SSI ERP2 U Power Supply Design Guide, V 1.0 - 12 - 5.8 AC Line Transient Specification STATUS Recommended AC line transient conditions shall be defined as “sag” and “surge” conditions. Sag conditions (also referred to as “brownout” conditions) will be de fined as the AC line voltage dropping below nominal voltage.
SSI ERP2 U Power Supply Design Guide, V 1.0 - 13 - 6 DC Output Specification These are the output requirements for the power supply assembly including cage and module. 6.1 Output Connectors The pow er supply assembly shall have the following output connectors and wire harness configuration.
SSI ERP2 U Power Supply Design Guide, V 1.0 - 14 - 6.1.3 Required Peripheral Power Connectors Connec tor housing: Amp 1 - 480424 - 0 or equivalent Contact : Amp 61314 - 1 contact or equivalent Table 8.
SSI ERP2 U Power Supply Design Guide, V 1.0 - 15 - 6.1.5 Optional Server Signal Connector Connec tor housing: 5 - pin Molex 50 - 57 - 9405 or equivalent Contacts: Molex 16 - 02 - 0088 or equivalent (gold plated) Note s : It is recommended to use gold plated signal contacts on both the power supply connector and the baseboard header.
SSI ERP2 U Power Supply Design Guide, V 1.0 - 16 - 6.4 Output Power/Currents STATUS Recommended The following tables define the power and current ratings for two recommend power levels. Depending upon the system design, the power supply modules may have only three outputs (+12V, - 12V, and 5V SB) or the full five outputs (+3.
SSI ERP2 U Power Supply Design Guide, V 1.0 - 17 - 6.4.1 Standby Outputs STATUS Required The 5 VSB output shall be present when an AC input greater than the power supply turn on voltage is applied.
SSI ERP2 U Power Supply Design Guide, V 1.0 - 18 - 6.6 Dynamic Loading STATUS Required The output voltages shall remain within the limits specified in Table 13 for the step loading and within the limits specified in Table 15 for the capacitive loading.
SSI ERP2 U Power Supply Design Guide, V 1.0 - 19 - Table 17 : Ripple and Noise +3.3 V +5 V +12 V - 12 V +5 VSB 50 mVp - p 50 mVp - p 120 mVp - p 120 mVp - p 50 mVp - p 6.9 Redundancy The power sub - system may have differen t levels of redundancy depending upon the availability requirements of the system.
SSI ERP2 U Power Supply Design Guide, V 1.0 - 20 - DC connect at the same time as the module is inserte d into the cage. No damage to the connector contacts shall occur. The module may power on or come up into standby mode. Many variations of the above are possible.
SSI ERP2 U Power Supply Design Guide, V 1.0 - 21 - 6.11 Timing Requirements STATUS Required These are the timing requirements for the power assembly operati on. The output voltages must rise from 10% to within regulation limits (T vout_rise ) within 5 to 200ms.
SSI ERP2 U Power Supply Design Guide, V 1.0 - 22 - Table 19 : Turn On/Off Timing Item Description MIN MAX UNITS T sb_on_delay Delay from AC being applied to 5 VSB being within regulation. 1500 ms T ac_on_delay Delay from AC being applied to all output voltages being within regulat ion.
SSI ERP2 U Power Supply Design Guide, V 1.0 - 23 - Figure 3 : Turn On/Off Timing AC Input Vout PWOK 5VSB PSON# T sb_on_delay T AC_on_delay T pwok_on T vout_holdup T pwok_holdup T pson_on_delay T sb_on.
SSI ERP2 U Power Supply Design Guide, V 1.0 - 24 - 7 Protection Circuits STATUS Required Protection circuits inside the power supply shall cause only the power supply’s ma in outputs to shutdown.
SSI ERP2 U Power Supply Design Guide, V 1.0 - 25 - Table 21 : Over Current Protection Voltage Over Current Limit (Iout limit) +3.3 V 110% minimum; 150% maximum +5 V 110% minimum; 150% maximum +12V1,2,3 Peak current minimum; 20A maximum 7.
SSI ERP2 U Power Supply Design Guide, V 1.0 - 26 - 8 Control and Indicator Functions The following sections define the input and output signals from the power sup ply. Signals that can be defined as low true use the following convention: signal # = low true 8.
SSI ERP2 U Power Supply Design Guide, V 1.0 - 27 - 8.2 PWOK (Power OK) STATUS Required PWOK is a power OK signal and will be pulled HIGH by the power supply to indicate that all the outputs are within the regulation limits of the po wer supply.
SSI ERP2 U Power Supply Design Guide, V 1.0 - 28 - 8.3 SMBus Communication STATUS Optional There may be SMBus communicatio n to the power assembly to monitor the cage and modules. This would require a serial EEPROM to store FRU data of each module and communicate the information onto the SMBus.
SSI ERP2 U Power Supply Design Guide, V 1.0 - 29 - Asse t Tag {Not used, code is zero length byte} FRU File ID {Not required} PAD Bytes {Added as necessary to allow for 8 - byte offset to next area} 8.3.3.2 MultiRecord Area As defined by the IPMI FRU document.
SSI ERP2 U Power Supply Design Guide, V 1.0 - 30 - 8.4 LED Indicators STATUS Required There shall be a single bi - color LED OR two LEDs, one AMBER and one GREEN, on each hot swap power module to indicate power supply status. When AC is applied to the power supply and standby voltages are available the GREEN LED shall BLINK.
SSI ERP2 U Power Supply Design Guide, V 1.0 - 31 - 9 MTBF STATUS Recommended The power module shall have a minimum MTBF at continuous operation of 1) 50,000 hours at 100% load and 45 ° C, as calculated by Bellcore RPP, or 2) 100,000 hours demonstrated at 100% load and 50 ° C.
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