SSI
ERP2U
(Entry Redundant Power 2U)
Power Supply Design Guide
A Server System Infrastructure (SSI) Specification
For 2U Rack Chassis Power Supplies
Version 2.31
Страница 1: ...SSI ERP2U Entry Redundant Power 2U Power Supply Design Guide A Server System Infrastructure SSI Specification For 2U Rack Chassis Power Supplies Version 2 31 ...
Страница 2: ...wok_on max time reduced to 500msec Change 5VSB to 3 0A for 650W Added reference to PSMI spec Modified SMBus section FRU and PSMI to 3 3V with 5V tolerance Modified 240VA section removed common plane change to 20A for all 12V outputs Updated sound power airflow requirements Remove reference to split and common rails Updated efficiency testing method 2 3 Increase 5V current to 30A and combined 3 3V ...
Страница 3: ...SEQUENTIAL DIRECT INDIRECT OR SPECIAL AMAGES WHETHER UNDER CONTRACT TORT WARRANTY OR OTHERWISE ARISING IN ANY WAY OUT OF USE OR RELIANCE UPON THIS SPECIFICATION OR ANY INFORMATION HEREIN The Promoters disclaim all liability including liability for infringement of any proprietary rights relating to use of information in this specification No license express or implied by estoppel or otherwise to an...
Страница 4: ...nectors 15 6 1 1 Required Baseboard power connector 15 6 1 2 12V4 Baseboard Power Connector 16 6 1 3 Required Peripheral Power Connectors 16 6 1 4 Required Floppy Power Connector 16 6 1 5 Serial ATA Power Connector 17 6 1 6 Server Signal Connector 17 6 2 Grounding 18 6 3 Remote Sense 18 6 4 Output Power Currents 18 6 4 1 Standby Outputs 21 6 4 2 Fan operation in standby mode 21 6 5 Voltage Regulat...
Страница 5: ...1 Baseboard Power Connector 15 Table 9 Processor Power Connector 15 Table 10 Peripheral Power Connectors 16 Table 11 P9 Floppy Power Connector 16 Table 12 Floppy Power Connector 17 Table 13 Server Signal Connector 17 Table 14 550 W Load Ratings 18 Table 15 600 W Load Ratings 19 Table 16 650 W Load Ratings 19 Table 17 700 W Load Ratings 20 Table 18 750 W Load Ratings 20 Table 19 800 W Load Ratings ...
Страница 6: ...SSI ERP2U Power Supply Design Guide V2 31 6 Table 34 FRU Device Product Information Area 33 Table 35 LED Indicators 34 ...
Страница 7: ...t swap redundant configuration The scope of this document defines the requirements for this power assembly The parameters of this supply are defined in this design guide for open industry use Conceptual Overview In the Entry server market the bulk power system must source power on several output rails These rails are typically as follows 3 3 V optional from bulk supply 5 V optional from bulk suppl...
Страница 8: ...ion commonly includes briefly removing and then reconnecting the supply or it could be done through a switch Electronic intervention could be done by electronic signals in the Server System Monotonically A waveform changes from one level to another in a steady fashion without intermediate retracement or oscillation Noise The periodic or random signals over frequency band of 0 Hz to 20 MHz Overcurr...
Страница 9: ...d in the system and not redundant or hot swappable The exterior face of the cage accepts hot swappable power supply modules The cage distributes output power from the modules to a wire harness Cooling fans EMI filtering and IEC inlet connector s may be located in the modules or cage 400 0 1 0 400 0 350 0 1 0 30 MAX HANDLE LATCH Figure 1 Enclosure Drawing 108 0 0 5 113 0 0 5 118 0 1 0 61 8 0 5 15 0...
Страница 10: ... Sound Power Levels Idle Typical Max Ambient Temperature 28ºC 28ºC 45ºC Loading 30 60 100 Sound Power BA 5 2 5 6 6 1 4 2 Airflow Requirements STATUS Recommended The air shall exit the power supply on the AC inlet face The power supply shall meet all requirements with the below system airflow impedance presented to the power supplies airflow path Figure 2 System Airflow Impedance System Flow Impeda...
Страница 11: ...N61000 3 2 and JEIDA MITI standards 5 1 AC Inlet Connector STATUS Required The AC input connector shall be an IEC 320 C 14 power inlet This inlet is rated for 15 A 250 VAC This connector may be located on the module or on the cage 5 2 Redundant AC Inlets STATUS Recommended The power supply assembly may have dual redundant AC inlets The power supply shall be able to operate over its full specified ...
Страница 12: ... 20 loading conditions to help reduce system power consumption at typical system loading conditions Efficiency shall be tested at AC input voltages of 115VAC and 230VAC Refer to www efficientpowersupplies org for details on proper efficiency testing methods Table 4 Efficiency Loading 100 of maximum 50 of maximum 20 of maximum Required minimum 70 72 65 Recommended minimum 80 83 78 5 6 AC Line Dropo...
Страница 13: ...e ratings of its critical components including input fuse bulk rectifiers and surge limiting device STATUS Recommended An additional inrush current limit is recommended for some system applications that require multiple systems on a single AC circuit AC line inrush current shall not exceed 40 A peak After one quarter of the AC cycle the input current should be no more than the specified maximum in...
Страница 14: ...ation STATUS Recommended The power supply shall meet 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 must not cause any out of regulation conditions such as overshoot and undershoot nor must it cause any nuisance trips of any of the power sup...
Страница 15: ...onnector Pin Signal 18 AWG Color Pin Signal 18 AWG Color 1 3 3 VDC Orange 13 3 3 VDC Orange 2 3 3 VDC Orange 14 12 VDC Blue 3 COM Black 15 COM Black 4 5 VDC Red 16 PS_ON Green 5 COM Black 17 COM Black 6 5 VDC Red 18 COM Black 7 COM Black 19 COM Black 8 PWR OK Gray 20 Reserved 5 V in ATX N C 9 5 VSB Purple 21 5 VDC Red 10 12 V3 Yellow 22 5 VDC Red 11 12 V3 Yellow 23 5 VDC Red 12 3 3 VDC Orange 24 C...
Страница 16: ...0VA limiting is not a requirement for the power supply than all 12V outputs are common and may have the same wire color yellow 6 1 3 Required Peripheral Power Connectors Connector housing Amp 1 480424 0 or equivalent Contact Amp 61314 1 contact or equivalent Table 9 Peripheral Power Connectors Pin Signal 18 AWG Color 1 12V4 Yellow 2 COM Black 3 COM Black 4 5 VDC Red 1 If 240VA limiting is not a re...
Страница 17: ...0 Table 11 Floppy Power Connector Pin Signal 18 AWG Color 5 3 3VDC Orange 4 COM Black 3 5VDC Red 2 COM Black 1 12V4 Yellow Green Stripe Serial ATA Connector 5 4 3 2 1 6 1 6 Server Signal Connector STATUS Optional For server systems with SMBus features the power supply may have an additional connector which provides serial SMBus for FRU data and remote sense on 3 3V and Return If the Server Signal ...
Страница 18: ...drop on the 3 3 V output The remote sense return ReturnS must be able to regulate out a minimum of 200 mV drop in the power ground return The current in any remote sense line shall be less than 5 mA to prevent voltage sensing errors The power supply must operate within specification over the full range of voltage drops from the power assembly s output connector to the remote sense points 6 4 Outpu...
Страница 19: ... 0 9 A 14 A 12V4 0 1 A 8 A 13 A 12 V 0 A 0 5 A 5 VSB 0 1 A 2 0 A 1 Maximum continuous total DC output power should not exceed 600 W 2 Maximum continuous combined load on 3 3 VDC and 5 VDC outputs shall not exceed 140 W 3 Maximum peak total DC output power should not exceed 710 W 4 Peak power and current loading shall be supported for a minimum of 10 second 5 Maximum combined current for the 12 V o...
Страница 20: ...rrent loading shall be supported for a minimum of 10 second 5 Maximum combined current for the 12 V outputs shall be 56 A 6 Maximum 12V combined peak current shall be 62 A 7 The 3 3V and 5V may be supply by the module or DC DC converters powered from 12V in the cage Table 17 750 W Load Ratings Voltage Minimum Continuous Maximum Continuous Peak 3 3 V 7 0 8 A 24 A 5 V 7 0 5 A 30 A 12V1 0 A 16 A 18 A...
Страница 21: ... shall be present when an AC input greater than the power supply turn on voltage is applied 6 4 2 Fan operation in standby mode STATUS Required For standby output at the higher power level when the supply is in standby mode it is required that the power supply fan s remain running at a very low speed This helps prevent power supply overheating when many systems in the same rack are in standby mode...
Страница 22: ... 5 5 VSB 4 85 5 00 5 25 Vrms 5 3 6 6 Dynamic Loading STATUS Required The output voltages shall remain within the limits specified in Error Reference source not found for the step loading and within the limits specified in Table 22 for the capacitive loading specified in below The load transient repetition rate shall be tested between 50 Hz and 5 kHz at duty cycles ranging from 10 90 The load trans...
Страница 23: ...ut MIN MAX Units 3 3 V 10 12 000 μF 5 V 10 12 000 μF 12 V 10 11 000 μF 12 V 1 350 μF 5 VSB 1 350 μF 6 8 Ripple Noise STATUS Required The maximum allowed ripple noise output of the power supply is defined in Table 24 This is measured over a bandwidth of 0 Hz to 20 MHz at the power supply output connectors A 10 μF tantalum capacitor in parallel with a 0 1 μF ceramic capacitor are placed at the point...
Страница 24: ...cified in Table 20 with the capacitive load specified Table 23 The hot swap test must be conducted when the sub system is operating under both static and dynamic conditions The sub system shall not exceed the maximum inrush current as specified in section 5 8 The power supply can be hot swapped by the following methods AC connecting separately to each module Up to two power supplies may be on a si...
Страница 25: ...reater than the 3 3 V output during any point of the voltage rise The 5V output must never be greater than the 3 3V output by more than 2 25 V Each output voltage shall reach regulation within 50 ms Tvout_on of each other during turn on of the power supply Each output voltage shall fall out of regulation within 400 ms Tvout_off of each other during turn off Figure 3 and Figure 4 show the turn ON a...
Страница 26: ... deactive to PWOK being deasserted 50 ms Tpwok_on Delay from output voltages within regulation limits to PWOK asserted at turn on 100 500 ms T pwok_off Delay from PWOK deasserted to output voltages 3 3 V 5 V 12 V 12 V dropping out of regulation limits 1 ms Tpwok_low Duration of PWOK being in the deasserted state during an off on cycle using AC or the PSON signal 100 ms Tsb_vout Delay from 5 VSB be...
Страница 27: ...4 Turn On Off Timing AC Input Vout PWOK 5VSB N PSO Tsb_on_delay TAC_on_delay Tpwok_on Tvout_holdup Tpwok_holdup Tpson_on_delay Tsb on delay Tpwok_on Tpwok_off Tpwok_off Tpwok_low Tpson_pwok Tsb_vout AC turn on off cycle PSON turn on off cycle Tsb_holdup ...
Страница 28: ... Current Protection Voltage Over Current Limit Iout limit 3 3 V 110 minimum 150 maximum 5 V 110 minimum 150 maximum 12V combined Peak combine current minimum 150 maximum 7 2 240VA Protection STATUS Recommended System designs may require user access to energized areas of the system In these cases the power supply may be required to meet regulatory 240VA energy limits for any power rail Since the 12...
Страница 29: ...hall never trip any lower than the minimum levels when measured at the power pins of the power supply connector Table 28 Over Voltage Limits Output Voltage MIN V MAX V 3 3 V 3 9 4 5 5 V 5 7 6 5 12V1 12V2 12V3 12V4 13 3 14 5 12 V 13 3 14 5 5 VSB 5 7 6 5 7 4 Over Temperature Protection STATUS Recommended The power supply will be protected against over temperature conditions caused by loss of fan coo...
Страница 30: ...xcept the 5 VSB and Vbias turn off This signal is pulled to a standby voltage by a pull up resistor internal to the power supply Refer to Figure 4 for timing diagram Table 29 PSON Signal Characteristic Signal Type Accepts an open collector drain input from the system Pull up to VSB located in power supply PSON Low ON PSON Open or High OFF MIN MAX Logic level low power supply ON 0 V 1 0 V Logic lev...
Страница 31: ...SMBus 2 0 high power and I2 C Vdd based power and drive This bus shall operate at 3 3V but tolerant of 5V signaling The SMBus pull ups are located on the motherboard and may be connected to 3 3V or 5V Two pins are allocated on the power supply One pin is the Serial Clock PSM Clock The second pin is used for Serial Data PSM Data Both pins are bi directional and are used to form a serial bus The dev...
Страница 32: ...ications The current versions of these specifications are available at http developer intel com design servers ipmi spec htm 8 5 2 Module FRU Data Format The information to be contained in the FRU device is shown in the following table Table 31 FRU Device Information Area Type Description Common Header As defined by the FRU document Internal Use Area Not required do not reserve Chassis Info Area N...
Страница 33: ...voltage range 2 180 High end input voltage range 2 264 A C dropout tol ms 20 Binary flags Set for Hot Swap support Autoswitch and PFC Peak Wattage Set for 10 s 550 W Combined wattage Set for 5 V 3 3V combined wattage of 115 W Predictive fail tach support Not supported 00h value Field Name Output Field Description Five outputs are to be defined from 1 to 5 as follows 3 3 V 5 V 12 V 12V and 5 VSB Ou...
Страница 34: ... Power Supply LED s AMBER GREEN No AC power to all PSU OFF OFF No AC power to this PSU only AMBER OFF AC present Only Standby Outputs On OFF BLINK Power supply DC outputs ON and OK OFF ON Power supply failure includes over voltage over temperature ON OFF Current limit ON OFF The LED s shall be visible on the power supply s exterior face The LED location shall meet ESD requirements LED shall be sec...
Страница 35: ...Although a power supply can be designed for worldwide compliance there may be cost factors that drive different versions of supplies for different geographically targeted markets This specification requires that the power supply meet all regulatory requirements for the intended market at the time of manufacturing Typically this includes UL CSA A Nordic CENELEC TUV VDE CISPR Class B FCC Class B The...
