Related Manuals for Intel Entry Redundant Power 2U ERP2U
Summary of Contents for Intel Entry Redundant Power 2U ERP2U
- Page 1 ERP2U (Entry Redundant Power 2U) Power Supply Design Guide A Server System Infrastructure (SSI) Specification For 2U Rack Chassis Power Supplies Version 1.0...
- Page 2 Promoters. Use, reproduction and disclosure of this specification and the information herein is subject to the terms of the S.S.I. Specification Adopter's Agreement. Copyright Intel Corporation, Dell Computer Corporation, Compaq Computer Corporation, Silicon Graphics Inc., International Business Machines Corporation, 2000. - 2 -...
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Page 3: Table Of Contents
Timing Requirements ... 21 Protection Circuits... 24 Current Limit ... 24 240VA Protection ... 24 Over Voltage Protection... 25 Over Temperature Protection ... 25 Control and Indicator Functions... 26 PSON# ... 26 ERP2U Power Supply Design Guide, V1.0 - 3 -... - Page 4 Table 25: FRU Device Information ... 28 Table 26: FRU Device Product Information Area ... 28 Table 27: FRU Device Product Information Area ... 29 Table 28: LED Indicators ... 30 ERP2U Power Supply Design Guide, V1.0 - 4 -...
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Page 5: Purpose
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 redundant power modules. This Design Guide covers the mechanical and electrical requirements of this power sub-system. The requirements of the individual hot swap modules are left open. -
Page 6: Definitions/Terms/Acronyms
Cubic Feet per Minute (airflow). A condition that allows the line voltage input to the power supply to drop to below the minimum operating voltage. A power supply, after detecting a fault condition, shuts itself off. Even if the fault condition disappears, the supply does not restart unless manual or electronic intervention occurs. -
Page 7: Mechanical Overview
The ERP2U is a power sub-system made up of a cage and redundant, hot swappable power supply modules. A mechanical drawing of the cage is shown below in Figure 1. This cage is intended to be mounted in the system and not redundant or hot swappable. -
Page 8: Recommended Chassis Mounting Method
During low-speed fan operation, the power supply must not exceed a noise level of 43 dBa measured at one meter on all faces. At low fan speed, the power supply shall provide a minimum of 6 CFM. -
Page 9: Redundant Cooling
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. 4.3 Temperature Requirements... -
Page 10: Ac Input Voltage Specification
The power supply must operate within all specified limits over the following input voltage range. Harmonic distortion of up to 10% THD must not cause the power supply to go out of specified limits. The power supply shall operate properly at 85 VAC input voltage to guarantee proper design margins. -
Page 11: Ac Line Dropout
AC inrush current shall not cause the AC line fuse to blow under any conditions. All protection circuits in the power supply shall not cause the AC fuse to blow unless a component in the power supply has failed. This includes DC output load short conditions. -
Page 12: Ac Line Transient Specification
“brownout” conditions) will be defined as the AC line voltage dropping below nominal voltage. Surge conditions will be defined as the AC line voltage rising above nominal voltage. The power supply shall meet the requirements under the following AC line sag and surge conditions. Duration... -
Page 13: Dc Output Specification
DC Output Specification These are the output requirements for the power supply assembly including cage and module. 6.1 Output Connectors The power supply assembly shall have the following output connectors and wire harness configuration. 6.1.1 Required Baseboard power connector Connector housing: 24-Pin Molex 39-01-2240 or equivalent... -
Page 14: Required Peripheral Power Connectors
Note: The +12V power to peripherals may be split between 2 or 3 channel for the purpose of limiting power to less than 240VA. Table 8: Peripheral Power Connectors 18 AWG Color Yellow Black Black Table 9: P9 Floppy Power Connector 22 AWG Color Black Black Yellow - 14 - ERP2U Power Supply Design Guide, V1.0... -
Page 15: Optional Server Signal Connector
It is recommended to use gold plated signal contacts on both the power supply connector and the baseboard header. If the optional server signal connector is not used on the power supply the 3.3VRS and ReturnS lines shall be crimped into the contacts in the baseboard power connector. -
Page 16: Output Power/Currents
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 5VSB) or the full five outputs (+3.3V, +5V, +12V, -12V, and 5VSB). If only three outputs are provided from the module, the cage shall have additional DC/DC converters to generate +5V and +3.3V from the +12V provided by the modules. -
Page 17: Standby Outputs
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. 6.5 Voltage Regulation STATUS Required The power assembly output voltages must stay within the following voltage limits when operating at steady state and dynamic loading conditions. -
Page 18: Dynamic Loading
The maximum allowed ripple/noise output of the power supply is defined in Table 17. This is measured over a bandwidth of 0 Hz to 20 MHz at the power supply output connectors. A 10 F tantalum capacitor in parallel with a 0.1 F ceramic capacitor are placed at the point of measurement. -
Page 19: Redundancy
STATUS Required The power supply modules shall be hot swappable. 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 specified in Table 13 with the capacitive load specified Table 16. The hot swap test must be conducted when the sub-system is operating under both static and dynamic conditions. - Page 20 The newly inserted power supply may get turned on by inserting the supply into the system or by system management recognizing an inserted supply and explicitly turning it on.
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Page 21: Timing Requirements
2.25 V. Each output voltage shall reach regulation within 50 ms (T on of the power supply. Each output voltage shall fall out of regulation within 400 ms (T during turn off. Figure 2 and Figure 3 show the turn ON and turn OFF timing requirements. In Figure 3, the timing is shown with both AC and PSON# controlling the ON/OFF of the power supply. -
Page 22: Table 19: Turn On/Off Timing
Time 5VSB output voltage stays within regulation sb_holdup after loss of AC. Table 19: Turn On/Off Timing active to output voltages within deactive to PWOK being - 22 - ERP2U Power Supply Design Guide, V1.0 UNITS 1500 2500 1000 1000 UNITS... -
Page 23: Figure 3: Turn On/Off Timing
ERP2U Power Supply Design Guide, V1.0 AC Input vout_holdup Vout AC_on_delay pwok_low pwok_off pwok_on pwok_off sb_on_delay sb_on_delay pwok_on PWOK pson_pwok pwok_holdup Tsb_holdup 5VSB sb_vout PSON# pson_on_delay AC turn on/off cycle PSON turn on/off cycle Figure 3: Turn On/Off Timing - 23 -... -
Page 24: Protection Circuits
Required The power supply shall have current limit to prevent the +3.3 V, +5 V, and +12 V outputs from exceeding the values shown in Table 20. If the current limits are exceeded, the power supply shall shutdown and latch off. The latch will be cleared by toggling the PSON damaged from repeated power cycling in this condition. -
Page 25: Over Voltage Protection
The voltage shall never exceed the maximum levels when measured at the power pins of the power supply connector during any single point of fail. The voltage shall never trip any lower than the minimum levels when measured at the power pins of the power supply connector. -
Page 26: Control And Indicator Functions
Control and Indicator Functions The following sections define the input and output signals from the power supply. Signals that can be defined as low true use the following convention: signal = low true 8.1 PSON# STATUS Required The PSON signal is required to remotely turn on/off the power supply. PSON on the +3.3 V, +5 V, +12 V, and -12 V power rails. -
Page 27: Pwok (Power Ok)
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 power supply. When any output voltage falls below regulation limits or when AC power has been removed for a time sufficiently long so that power supply operation is no longer guaranteed, PWOK will be deasserted to a LOW state. -
Page 28: Smbus Communication
Optional Two pins will be allocated for the FRU information on the power supply connector. One pin is the Serial Clock (SCL). The second pin is used for Serial Data (SDA). Both pins are bi-directional and are used to form a serial bus. -
Page 29: Table 27: Fru Device Product Information Area
PAD Bytes 8.3.3.2 MultiRecord Area As defined by the IPMI FRU document. The following record types shall be used on this power supply: Power Supply Information (Record Type 0x00) DC Output (Record Type 0x01) No other record types are required for the power supply. -
Page 30: Led Indicators
GREEN LED shall BLINK. The GREEN LED shall turn ON to indicate that all the power outputs are available. The AMBER LED shall turn ON to indicate that the power supply has failed, shutdown due to over current, or shutdown due to over temperature. Refer to Table 28: LED Indicators for conditions of the LED(s). -
Page 31: Mtbf
This specification requires that the power supply meet all regulatory requirements for the intended market at the time of manufacturing. Typically this includes:...