Intel EPS1U User's Manual
Contents
1. Required The power supply over voltage protection shall be locally sensed The power supply shall shutdown and latch off after an over voltage condition occurs This latch shall be cleared by toggling the PSON signal or by an AC power interruption Table 19 contains the over voltage limits The values are measured at the output of the power supply s connectors 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 Table 19 Over Voltage Limits Output Voltage MIN V MAX V 3 3 V 3 9 4 5 5 V 5 7 6 5 12V1 2 13 3 145 12V 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 cooling or excessive ambient temperature In an OTP condition the PSU will shutdown When the power supply temperature drops to within specified limits the power supply shall restore power automatically The OTP circuit must have built in hysteresis such that the power supply will not oscillate on and off due to temperature recovering condition The OTP trip level shall have a minimum of 4 C of ambient temperature hysteresis SSI EPS1U Power Supply Design Guide V1 1 8 Control and Indicator Functions Th2. Some system applications may require tighter regulation limits on the 5 V output The optional regulation limits are shown below Table 11 Optional 5V Regulation Limits Parameter MIN NOM MAX Units Tolerance 5 V 4 85 5 00 5 25 Vims 5 3 6 6 Dynamic Loading STATUS Required The output voltages shall remain within the limits specified in Table 10 for the step loading and within the limits specified in Table 12 for the capacitive loading The load transient repetition rate shall be tested between 50 Hz and 5 kHz at duty cycles ranging from 10 90 The load transient repetition rate is only a test specification The A step load may occur anywhere within the MIN load to the MAX load shown in Table 8 and Table 9 Table 12 Transient Load Requirements Output A Step Load Size Load Slew Rate Capacitive Load 3 3 V 30 of max load 0 5 A us 100 uF 5 V 30 of max load 0 5 A us 100 uF 12 V1 12 V2 65 of max load 0 5 A us 1 000 uF 5 VSB 25 of max load 0 5 A us 1 uF SSI EPS1U Power Supply Design Guide V1 1 6 7 Capacitive Loading STATUS Required The power supply shall be stable and meet all requirements with the following capacitive loading ranges Table 13 Capacitive Loading Conditions Output MIN MAX Units 3 3 V 10 6 800 uF 5 V 10 4 700 uF 12 V 10 11 000 uF 12 V 1 350 uF 5 VSB 1 350 uF 6 8 Ripple Noise STATUS Required The maximum allowed ri
3. Table 26 LED Indicators Power Supply Condition Power Supply LED No AC power to PSU or PSU failure OFF AG present Only Standby Output ON BLINK GREEN Power supply DC outputs ON and OK GREEN The LED shall be visible on the power supply s exterior face The LED location shall meet ESD requirements LED shall be securely mounted in such a way that incidental pressure on the LED shall not cause it to become displaced 9 MTBF STATUS Recommended The power supply shall have a minimum MTBF at continuous operation of 1 100 000 hours at 100 load and 45 C as calculated by Bellcore RPP or 2 250 000 hours demonstrated at 100 load and 45 C SSI EPS1U Power Supply Design Guide V1 1 10 Agency Requirements STATUS Recommended The power supply must comply with all regulatory requirements for its intended geographical market Depending on the chosen market regulatory requirements may vary 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 e UL e CSA e A Nordic CENELEC e TUV e VDE CISPR Class B FCC Class B The power supply when installed in the system shall meet immunity requiremen
4. 5 70 ms Tvout_on All main outputs must be within regulation of each 50 ms other within this time T vout off All main outputs must leave regulation within this 400 ms time i lt gt vout rise gt vout_off l 8 kel Tvout_on i Figure 4 Output Voltage Timing SSI EPS1U Power Supply Design Guide V1 1 Table 16 Turn On Off Timing Item Description MIN MAX Units Tsb on delay Delay from AC being applied to 5 VSB being 1500 ms within regulation T ac on delay Delay from AC being applied to all output 2500 ms voltages being within regulation Tvout holdup Time all output voltages stay within regulation 18 ms after loss of AC Tpwok holdup Delay from loss of AC to deassertion of PWOK 17 ms Tpson on delay Delay from PSON active to output voltages 5 400 ms within regulation limits T pson pwok Delay from PSON deactive to PWOK being 50 ms deasserted Tpwok on Delay from output voltages within regulation 100 1000 ms limits to PWOK asserted at turn on T pwok off Delay from PWOK deasserted to output 1 ms voltages 3 3 V 5 V 12 V 12 V dropping out of regulation limits Tpwok low Duration of PWOK being in the deasserted state 100 ms during an off on cycle using AC or the PSON signal Tsb vout Delay from 5 VSB being in regulation to O Ps 50 1000 ms being in regulation at AC turn on STATUS Recommended Item Description MIN MAX UNITS Tvout_holdup Time all output voltages stay wit
5. FRU Device MultiRecord Area Field Name PS Info Overall Capacity W Peak VA Inrush current A Inrush interval ms Low end input voltage range 1 High end input voltage range 1 Low end input voltage range 2 High end input voltage range 2 A C dropout tol ms Binary flags Peak Wattage Combined wattage Predictive fail tach support Field Name Output Output Information All other output fields Field Information Definition 350 Low power versions would be 250 or 125 400 Low power versions would be 300 or 161 30 5 90 140 180 264 20 Set for Not Hot Swap support Auto switch and PFC Set for 12 s 400 W Low power versions would be 300W or 161W Set for 5 V amp 3 3 V combined wattage of 113 W Low power versions would be 113W or 80 Not supported 00h value Field Description Six outputs are to be defined from 1 to 6 as follows 3 3 V 5 V 12 V1 12V2 12 V and 5 VSB Set for Standby on 5 VSB No Standby on all others Format per IPMI specification using parameters in the EPS1U specification SSI EPS1U Power Supply Design Guide V1 1 8 5 LED Indicator STATUS Required There will be a single GREEN LED to indicate power supply status When AC is applied to the PSU and standby voltages are available the LED shall BLINK GREEN The LED shall turn ON GREEN to indicate that all the power outputs are available Refer to Table 26 for conditions of the LED
6. Table 22 ACWarning Signal Charactertsice conc nnnn crac 27 T ble 23 FRU Device Information usa dagsavis kem eg ida 28 Table 24 FRU Device Product Information Area 28 Table 25 FRU Device MultiRecord Afedersin Ee na ETNE EEE TE EEE AE EAE EAEE ANAE EER 29 RER Beer TEE 20 SSI EPS1U Power Supply Design Guide V1 1 1 Purpose This specification defines a non redundant power supply that supports 1U rack mount entry server systems The entry level power supply is not intended to be a hot swap type of power supply The parameters of this supply are defined in this specification for open industry use This specification defines a 125W 250 W and 350 W power supply with six outputs 3 3 V 5 V 12 V 12 V and 5 VSB The form factor fits into a 1U system and provides a wire harness or docking solution for output connections An IEC connector is provided on the external face for AC input to the power supply The power supply contains fans for cooling while meeting acoustic requirements 2 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 5 V 12 V e 12V e DN standby NOTE Local DC DC converters shall be utilized for processor power and will ideally convert power from the 12 V rail however they may also convert power from other rails The bulk power system may be an n 1 redundant power system or a non redundant
7. 1 Maximum continuous total DC output power should not exceed 350 W 2 Peak load on the combined 12 V output shall not exceed 32 A 3 Maximum load on the combined 12 V output shall not exceed 28 A 4 Peak total DC output power should not exceed 400 W 5 Peak power and current loading shall be supported for a minimum of 12 seconds 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 EPS1U Power Supply Design Guide V1 1 6 5 Voltage Regulation STATUS Required The power supply output voltages must stay within the following voltage limits when operating at steady state and dynamic loading conditions These limits include the peak peak ripple noise specified in Section 6 8 All outputs are measured with reference to the return remote sense ReturnS signal The 5 V 12 V1 12 V2 12 V and 5 VSB outputs are measured at the power supply connectors referenced to ReturnS The 3 3 V is measured at its remote sense signal 3 3 VS located at the signal connector Table 10 Voltage Regulation Limits Parameter MIN NOM MAX Units Tolerance 3 3 V 3 20 3 30 3 46 Vims 5 3 5 V 4 80 5 00 5 25 Vims 5 4 12 V1 11 52 12 00 12 60 Vims 5 4 12 V2 11 52 12 00 12 60 Vims 5 4 12 V 11 40 12 20 13 08 Vims 9 5 5 VSB 4 85 5 00 5 25 Vims 5 4 STATUS Optional
8. Connector Center Line Bi Color LED PWR Fail IEC Connector Center Line MM Interior Face All dimensions are in millimeters Figure 2 Alternate Enclosure Drawing SSI EPS1U Power Supply Design Guide V1 1 4 3 Airflow Requirements STATUS Recommended The power supply shall have a two speed fan s and provide cooling to both the supply and the system During low speed fan operation the power supply shall not exceed a noise level of 38 dBA measured at one meter on all faces At low fan speed the power supply shall provide a minimum of 6 CFM of airflow with 0 003 inH20 of system backpressure At high fan speed the power supply shall provide a minimum of 10 CFM with 0 006 inH20 of system backpressure 4 4 Temperature Requirements STATUS Recommended The power supply shall operate within all specified limits over the Top temperature range The average air temperature difference AT ps from the inlet to the outlet of the power supply shall not exceed the values shown in Table 2 All airflow shall pass through the power supply and not over the exterior surfaces of the power supply Table 2 Thermal Requirements Item Description MIN MAX Units Top Operating temperature range 0 45 C ATps Temperature rise from inlet air to outlet air of power supply 125 W output power 10 CFM Sea level 25 C inlet air 15 C 125 W output power 6 CFM Sea level 25 C inlet air 25 C Te
9. Parameter MIN Rated MAX MAX Input MAX Input MAX Input MAX Rated Input Current Current Current Current 125W 250W 350W 125W 250W 350W Voltage 110 90 Vims 100 127 Vms 140 Vms 2 4 Ams 4 2 Ams 15 Anne 122 8 8 53Am Voltage 220 180 Vms 200 240 Vms 264 Vms 1 2 Am 2 1 Ams 3 0 Ams 1 1 1 9 2 7 Ams Frequency 47 Hz 63 Hz 1 Maximum input current at low input voltage range shall be measured at 90VAC A 125W output load shall be applied to the 125W version a 250 W output load shall be applied for the 250 W version and a 350 W output load shall be applied to the 350 W version 2 Maximum input current at high input voltage range shall be measured at 180 VAC A 125W output load shall be applied to the 125W version a 250 W output load shall be applied for the 250 W version and a 350 W output load shall be applied to the 350 W version 3 This is not to be used for determining agency input current markings 4 Maximum rated input current is measured at 100 VAC and 200 VAC 5 3 Input Under Voltage STATUS Required The power supply shall contain protection circuitry such that application of an input voltage below the minimum specified in section 5 2 shall not cause damage to the power supply SSI EPS1U Power Supply Design Guide V1 1 5 4 Efficiency STATUS Required The power supply shall have a minimum efficiency of 68 at maximum load and over the specified AC vol
10. damage can occur to the power supply All outputs shall be protected so that no damage occurs to the power supply under a shorted output condition Table 17 Over Current Protection Voltage Over Current Limit lout limit 3 3 V 110 minimum 150 maximum 5 V 110 minimum 150 maximum 12 V 110 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 limits for any power rail Since the 12V rail combined power exceeds 240VA it must be divided into separate channels to meet this requirement Each separate rail needs to be limited to less than 20A for each 12V rail The separate 12V rails do not necessarily need to be independently regulated outputs They can share a common power conversion stage The 12V rail is divided into two rails for the 250W and 350W power levels 12V1 is dedicated for providing power to the input of the processor voltage regulator s The 12V2 rail is used to power the rest of the main board 12V power needs and peripherals devices Table 18 Over Current Protection Voltage Over Current Limit lout limit 3 3 V 110 minimum 150 maximum 5 V 110 minimum 150 maximum 12V1 18A minimum 20A maximum 12V2 18A minimum 20A maximum SSI EPS1U Power Supply Design Guide V1 1 7 3 Over Voltage Protection STATUS
11. is designed for use in 1U rack mounted systems 4 1 High Power Card Edge Form Factor STATUS Large Power Form Factor The high power edge card form factor is intended for use at 250W and 350W power levels Refer to Figure 1 for details The supply will provide its output power via a card edge on the interior face of the power supply to provide users and manufacturers easy installation and removal of the power supply into the system Top View IEG Connector no 2 80 92 0 0 05 0 3 IEC Connector 12 54 Center Line Bi Color LED PWR Fail IEC Connector EA Center Line 300 0 192 Jase O eS a Exterior Face View Side View Interior Face View 16 4 02 All dimensions are in millimeters Figure 1 Enclosure Drawing SSI EPS1U Power Supply Design Guide V1 1 4 2 Alternate Enclosure STATUS Small Power Form Factor Systems may require a smaller power supply enclosure Figure 2 details a smaller power supply enclosure for such systems This form factor accommodates power levels of 250W and 125W The supply will provide output power via a wire harness out the interior face of the supply Refer to the Entry Electronics Bay Specification at the SSI web site http www ssiforum org docs entry elecbay spec v2 0 pdf for possible output connector configurations Due to different system board layouts the wire harness length may vary IEC Connector 53 0 0 2 106 0 p i IEC
12. 1 Standby QUIPUlS teorias aa nai 17 6 5 Voltage Regulators its a a cn ee ee 18 6 6 DINAMICA EE 18 6 77 Capacitive Loader tirada dial 19 6 8 RIPPIS O O steaasiceteles 19 6 9 TIMING Requirements ista ci n 20 7 Protection Circults unde SE 23 7 1 Current a rik a sinne 23 fe 240 VA Protect n citar tallo EE ts 23 13 Over Voltage Protection viii ddr dadas 24 7 4 Over Temperature Protection nec 24 8 Control and Indicator FunctionS rrsevrnnavnnnnnvnnnnvnnnnvnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnennn 25 sadi PSONN RE a ones 25 8 2 PWOK Power EE ebe Eden it 26 8 3 AG Warning assena apan A idle dtl dens 27 8 4 Field Replacement Unit FRU Signals cccccecececeeeeeceeeeeeeaeeeeeeeseaeeesaaeeseaee scenes seaeeesaeeseeeseeeees 28 8 4 1 FRU Data EE 28 84 2 FRU Data Format sierica id 28 8 5 LED Indica da a cis 30 SSI EPS1U Power Supply Design Guide V1 1 SSE AA A 30 1 0 Agency Requirements rrnnnnnnvennnnnnvnnnnnnnvnnnnnnnvnnnnnnnvnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnn 31 Figures Figure 1 Figure 2 Figure 3 Figure 4 Figure 5 Enclosure Drawing audi dear vand EREN id bie brede e 7 Alternate Enclosure Drawing oooocccconnccccnnnncconnnoncccnnnn naco 8 Edge Finger Layout iii A ed Ge eee 14 Output Voltage TIMING an pur prises yenan teea ani ae decia 20 Turn On Off Timing Signal Power Supp 22 Figure 6 PSON
13. ATUS Required The power supply uses a blind mating type connector with edge fingers see Figure 1 to connect the power supply s output voltages and signals to a connector located in the system The card edge pin assignments are listed in Table 6 Figure 3 shows the card edge layout for the power supply The connector located in the system is an AMP 1364999 1 or equivalent Signals that can be defined as low true or high true use the following convention signaf low true Reserved pins are reserved for future use Table 6 Edge Finger Pinout Description Pin Pin Description 12V 1 62 PSON PWOK 2 61 SDA Reserved 3 60 SCL ACWarning 4 59 PSAlert 5VSB 5 58 ReturnS Removed pn 6 57 Reserved Reserved 7 56 Reserved Reserved 8 55 3 3VS Reserved 9 54 Reserved Reserved 10 53 Reserved 12V2 11 52 12V2 Keying notch between positions 11 and 12 12V2 12 51 12V2 12V2 13 50 12V2 12V1 14 49 12V1 12V1 15 48 12V1 12V1 16 47 12V1 Ground 17 46 Ground Ground 18 45 Ground Ground 19 44 Ground Ground 20 43 Ground Ground 21 42 Ground Ground 22 41 Ground Ground 23 40 Ground Ground 24 39 Ground Ground 25 38 Ground 5V 26 37 DV 5V 27 36 5V 5V 28 35 5V 3 3V 29 34 3 3V 3 3V 30 33 3 3V SSI EPS1U Power Supply Design Guide V1 1 All dimensions are in millimeters Top View of Power Supply am og H 8 Keying Notch o 16 IA 5 O 14 3 gt N r p je DADO Lagg 2 gt Q S A nn na
14. SSI EPS1U Power Supply Design Guide V1 1 EPS1U Power Supply Design Guide A Server System Infrastructure SSI Specification For 1U Rack Chassis Power Supplies Version 1 1 SSI EPS1U Power Supply Design Guide V1 1 Disclaimer THIS SPECIFICATION IS PROVIDED AS IS WITH NO WARRANTIES WHATSOEVER INCLUDING ANY WARRANTY OF MERCHANTABILITY NONINFRINGEMENT FITNESS FOR ANY PARTICULAR PURPOSE OR ANY WARRANTY OTHERWISE ARISING OUT OF ANY PROPOSAL SPECIFICATION OR SAMPLE WITHOUT LIMITATION THE PROMOTERS Intel Corporation NEC Corporation Dell Computer Corporation Data General a division of EMC Corporation Compaq Computer Corporation Silicon Graphics Inc and International Business Machines Corporation DISCLAIM ALL LIABILITY FOR COST OF PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES LOST PROFITS LOSS OF USE LOSS OF DATA OR ANY INCIDENTAL CONSEQUENTIAL DIRECT INDIRECT OR SPECIAL DAMAGES 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 any intellectual property rights is granted herein This specification and the information herein is the confidential and trade secret information of the Promoters Use reproduction and di
15. Signal Characteristics ooococcnnncinninnnnnnccnnnccnnononncrnn nc cnnrrcr nr 25 Tables Table 1 Definitions Terms and Acronyms listed alphabetically AA 6 Table 2 Thermal Requirements comnccccnnnncicnnnncccnnnncccrn nc 9 Table 3 AC Input Rating ET 10 Table 4 AC Line Sag Transient Performance 12 Table 5 AC Line Surge Transient Performance cccccccscccceessececeeeeeeceeeaeeeceeeaeeeceesaeeeseeeaeessecsaeeeseeaeeeesenaeeeeesaas 12 Table 6 Edge Fitiger de EE 13 rable 7 125 W Load Ratings ais id 16 Table 6 250 W Load Ratings nettsida junker tikkende kasko 16 Tabl 9 350 W Load RAMOS TEE 17 Table 10 Voltage Regulation Limits rissie inasra iea E ENAS E RENA NAET A RATAS ENAR RIAA 18 Table 11 Optional 5V Regulation Limits oooooccnnncinnnicinncnnnnccnnoncnnnonnconcc corran nana crac rn 18 Table 12 Transient Load Requirement nn EANA nan n cnn nn cnn 18 Table 13 Capacitve Loading Ke ele rte EE 19 Table 14 Ripple and NOISE cancer n aeaa a nen nn aaa A ai nr a aai aaa 19 Table 15 Output Voltage Hung 2 dde E th a vendt 20 Table 16 Turn On Off Timing ET 21 Table 17 Over Current Protecti isonet a te dada tias 23 Table 18 Over Current Protection cccccceecceceeeeeeeeeeeeeeceeeeceaeeeeaaeseeeeseaeeeeaaeedeaeeseeeeesaeeeeaaeseeeeeseeeetaesseaeeeeeeeess 23 Table t9 Over Voltage Limits erati neniarn dan dia dete Ee hee 24 Table 20 PSON tele Ee EE 25 Table 21 PWOK Signal Characteristics eiii ea aia 26
16. Table 22 ACWarning Signal Characteristics Refer to Figure 5 for timing diagram Table 22 ACWarning Signal Characteristics Signal Type Open collector drain output from power supply Pull up to VSB located in system ACWarning Low Input voltage within operating range and power supply is ready to turn on ACWarning High Input voltage is less than the operating range and the power supply is turning off MIN MAX Logic level low voltage Isink 4mA OV 0 4V Logic level high voltage Isink 50uA 5 25V Sink current ACWarning low 4mA Sink current ACWarning high 50uA ACWarning Delay Taowaring delay 8msec ACWarning rise and fall time 100usec Power supply turn on voltage 75VAC 85VAC SSI EPS1U Power Supply Design Guide V1 1 8 4 Field Replacement Unit FRU Signals STATUS 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 The FRU circuits inside the power supply must be powered off of 5 VSB output and grounded to ReturnS remote sense return The Write Control or Write protect pin should be tied to ReturnS inside the power supply so that information can be written to the EEPROM 8 4 1 FRU Data FRU data shall be stored starting in address location 8000h through 80FFh The FRU data format shall be compliant with t
17. e 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 is an active low signal that turns on the 3 3 V 5 V 12 V and 12 V power rails When this signal is not pulled low by the system or left open the outputs except 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 5 for the timing diagram Table 20 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 ov 1 0 V Logic level high power supply OFF 2 0 V 5 25 V Source current Vpson low 4 mA Power up delay Tyson on delay 5 ms 400 ms PWOK delay Toson_pwok 50 ms Hysteresis gt 0 3V and or other de bounce method Disabled lt 1 0V gt 2 0V PS is e PS is enabled disabled Enabled DV 1 0V 2 0V 5 25V Figure 6 PSON Signal Characteristics SSI EPS1U Power Supply Design Guide V1 1 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 regula
18. emote 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 supply s output connector to the remote sense points 6 4 Output Power Currents The following tables define three power and current ratings for a 125W 250 W and a 350 W power supply These were selected to cover different types of systems and configurations The 125W power level is targeted for use in today s low power server systems The 250W power level is targeted for use in today s higher power 1U server systems The 350W power level is directed at tomorrow s higher power 1U server systems The combined output power of all outputs shall not exceed the rated output power The tables show the load ranges for each of the two power supply power levels The power supply must meet both static and dynamic voltage regulation requirements for the minimum loading conditions STATUS Low Power Recommendation SSI EPS1U Power Supply Design Guide V1 1 Table 7 125 W Load Ratings Load Range Voltage Minimum Continuous Maximum Continuous Peak 3 3 V 0 5A 6A 5 V 05A 12A 12 V1 0 25A 3A 6A 12 V2 Not used for 125W version 12 V OA 0 2A 5 VSB 0 1A 1 0A 1 Maximum continuous total DC out
19. he IPMI specifications The current version of these specifications is available at http developer intel com design servers ipmi spec htm 8 4 2 FRU Data Format The information to be contained in the FRU device is shown in the following table Table 23 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 Not applicable do not reserve Board Info Area Not applicable do not reserve 8 4 2 1 Product Info Area As defined by the IPMI FRU document Product information shall be defined as follows Table 24 FRU Device Product Information Area Field Name Field Description Manufacturer Name Formal name of manufacturer Product Name Manufacturer s model number Product part model Customer part number number Product Version Customer current revision Product Serial Number Defined at time of manufacture Asset 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 SSI EPS1U Power Supply Design Guide V1 1 8 4 2 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 e DC Output Record Type 0x01 e No other record types are required for the power supply MultiRecord information shall be defined as follows Table 25
20. hin regulation 21 ms after loss of AC Tpwok_holdup Delay from loss of AC to deassertion of PWOK 20 ms Tsb_holdup Time 5VSB output voltage stays within regulation 70 ms after loss of AC SSI EPS1U Power Supply Design Guide V1 1 AC Input le sy Tvout_holdup T sp_on_delay gt Tpwok on I Tpwok_on e Tpwok off T PWOK pson_pwok 5VSB Tsb_holdup Tpson on delay PSONH AC turn on off cycle i lt PSON turn on off cycle gt Figure 5 Turn On Off Timing Signal Power Supply SSI EPS1U Power Supply Design Guide V1 1 7 Protection Circuits STATUS Required Protection circuits inside the power supply shall cause only the power supply s main outputs to shutdown If the power supply latches off due to a protection circuit tripping an AC cycle OFF for 15 seconds and a PSON cycle HIGH for 1 second shall be able to reset the power supply 7 1 Current Limit STATUS 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 17 If the current limits are exceeded the power supply shall shutdown and latch off The latch will be cleared by toggling the PSON signal or by an AC power interruption The power supply shall not be damaged from repeated power cycling in this condition 12 V and 5 VSB shall be protected under over current or shorted conditions so that no
21. in a steady fashion without intermediate retracement or oscillation MTBF Mean time between failure Noise The periodic or random signals over frequency band of 0 Hz to 20 MHz Overcurrent A condition in which a supply attempts to provide more output current than the amount for which it is rated This commonly occurs if there is a short circuit condition in the load attached to the supply PFC Power Factor Corrected PWOK A typical logic level output signal provided by the supply that signals the Server System that all DC output voltages are within their specified range Ripple The periodic or random signals over a frequency band of 0 Hz to 20 MHz Rise Time Rise time is defined as the time it takes any output voltage to rise from 10 to 95 of its nominal voltage Sag The condition where the AC line voltage drops below the nominal voltage conditions Surge The condition where the AC line voltage rises above nominal voltage VSB or Standby Voltage An output voltage that is present whenever AC power is applied to the AC inputs of the supply SSI EPS1U Power Supply Design Guide V1 1 4 Mechanical Overview There are two physical sizes of the power supply enclosure intended to accommodate power levels of 125W 250W and 350W There are two output connector designs A card edge solution to provide ease of installation and removal and a wire harness to provide a traditional cabled solution The chassis for the entry 1U power supply
22. ine Sag Transient Performance Duration Sag Operating AC Voltage Line Frequency Performance Criteria Continuous 10 Nominal AC Voltage ranges 50 60 Hz No loss of function or performance 0 to 1 AC cycle 100 Nominal AC Voltage ranges 50 60 Hz No loss of function or performance gt 1 AC cycle gt 10 Nominal AC Voltage ranges 50 60 Hz Loss of function acceptable self recoverable Table 5 AC Line Surge Transient Performance Duration Surge Operating AC Voltage Line Frequency Performance Criteria Continuous 10 Nominal AC Voltages 50 60 Hz No loss of function or performance 0 to AC cycle 30 Mid point of nominal AC 50 60 Hz No loss of function or performance Voltages 5 9 AC Line Fast Transient Specification 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 e 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 supply protection circuits e The surge withstand test must not produce damage to the power supply e The supply must meet surge withstand test conditions under maximum and minimum DC output load conditions SSI EPS1U Power Supply Design Guide V1 1 6 DC Output Specification 6 1 Connector ST
23. mperature rise from inlet air to outlet air of power supply 250 W output power 10 CFM Sea level 25 C inlet air 20 C 250 W output power 6 CFM Sea level 25 C inlet air 30 C 350 W output power 10 CFM Sea level 25 C inlet air 30 C 350 W output power 6 CFM Sea level 25 C inlet air 40 C Thon op Non operating temperature range 40 70 C The power supply must meet UL enclosure requirements for temperature rise limits All sides of the power supply with exception to the air exhaust side must be classified as Handle knobs grips etc held for short periods of time only SSI EPS1U Power Supply Design Guide V1 1 5 AC Input Requirements STATUS Required The power supply shall incorporate universal power input with active power factor correction which shall reduce line harmonics in accordance with the EN61000 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 5 2 AC Input Voltage Specification STATUS Required 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 Table 3 AC Input Rating
24. power system SSI EPS1U Power Supply Design Guide V1 1 3 Definitions Terms Acronyms Table 1 Definitions Terms and Acronyms listed alphabetically Required The status given to items within this design guide which are required to meet SSI guidelines and a large majority of system applications Recommended The status given to items within this design guide which are not required to meet SSI guidelines however are required by many system applications Optional The status given to items within this design guide which are not required to meet SSI guidelines however some system applications may optionally use these features Full Ranging A full ranging power supply automatically senses and adjusts itself to the proper input voltage range 110 VAC or 220 VAC No manual switches or manual adjustments are needed CFM Cubic Feet per Minute airflow Dropout A condition that allows the line voltage input to the power supply to drop to below the minimum operating voltage Latch Off A power supply after detecting a fault condition shuts itself off Even if the Monotonically fault condition disappears the supply does not restart unless manual or electronic intervention occurs Manual intervention 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 A waveform changes from one level to another
25. pple noise output of the power supply is defined in Table 14 below This is measured over a bandwidth of 0 Hz to 20 MHz at the power supply output connectors A 10 uF tantalum capacitor in parallel with a 0 1 uF ceramic capacitor are placed at the point of measurement Table 14 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 SSI EPS1U Power Supply Design Guide V1 1 6 9 Timing Requirements STATUS Required These are the timing requirements for the power supply operation The output voltages must rise from 10 to within regulation limits Tuout rise Within 5 to 70 ms The 3 3 V 5 V and 12 V output voltages should start to rise at about the same time All outputs must rise monotonically The 5 V output needs to be greater than the 3 3 V output during any point of the voltage rise The 5 V 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 Tyout on of each other during turn on of the power supply Each output voltage shall fall out of regulation within 400 ms Tyout o Of each other during turn off Figure 4 and Figure 5 show the turn ON and turn OFF timing requirements In Figure 5 the timing is shown with both AC and PSON controlling the ON OFF of the power supply Table 15 Output Voltage Timing Item Description MIN MAX Units Tvout rise Output voltage rise time from each main output
26. put power should not exceed 125 W 2 Peak total DC output power should not exceed 161 W 3 Peak power and current loading shall be supported for a minimum of 12 seconds STATUS Medium Power Recommendation Table 8 250 W Load Ratings Load Range 1 Voltage Minimum Continuous Maximum Continuous Peak 3 3 V 15A 16A 5 V 10A 12A 12 V1 15A 16A See note 2 12 V2 0 5A 10A See note 2 12V OA 0 5A 5 VSB 0 1A 2 0A Load Range 2 Voltage Minimum Continuous Maximum Continuous Peak 3 3 V 0 2A 5 0 A 5 V 0 2A 5 0 A 12 Vi 0 2A 8 0A 12 V2 0 2A 2 0A 4 0 A 12 V OA 0 5A 5 VSB 0 1A 2 0A 1 Maximum continuous total DC output power should not exceed 250 W 2 Peak load on the combined 12 V output shall not exceed 22 A 3 Maximum load on the combined 12 V output shall not exceed 18 A 4 Peak total DC output power should not exceed 300 W 5 Peak power and current loading shall be supported for a minimum of 12 seconds STATUS High Power Recommendation SSI EPS1U Power Supply Design Guide V1 1 Table 9 350 W Load Ratings Load Range 1 Voltage Minimum Continuous Maximum Continuous Peak 3 3 V 15A 16A 5 V 1 0A 12A 12 Vi 15A 16A See note 2 12 V2 15A 16A See note 2 12V OA 0 5A 5 VSB 0 1A 20A Load Range 2 Voltage Minimum Continuous Maximum Continuous Peak 3 3 V 0 2A 5 0A 5 V 0 2A 5 0A 12 Vi 0 2A 8 0A 12 V2 0 2A 20A 5 0 A 12V OA 0 5A 5 VSB 0 1A 20A
27. sclosure of this specification and the information herein is subject to the terms of the S S I Specification Adopter s Agreement Copyright O Intel Corporation NEC Corporation Dell Computer Corporation Data General a division of EMC Corporation Compaq Computer Corporation Silicon Graphics Inc International Business Machines Corporation 2001 SSI EPS1U Power Supply Design Guide V1 1 Contents 1 PUrpose Lundenes 5 2 Conceptual Overview iii A A RI a riada 5 3 Definitions Terms ACronymsS occ 6 4 Mechanical DVI iden 7 4 1 High Power Card Edge Form Factor unarenannvnrnrvnnnnvrnnnnvnnenvennnrrvnnnrnnnnnnnrsrresnrnnsnnnnnenressnrnesnnnnnennenennn 7 4 2 Alternate le tio ii da dada ee dg 8 43 Airflow Requirements sencera beer ea 9 4 4 Temperature Requirements cececcccceceeeee eee eeaeeeeeee ceca aeaeceeeeeegeaaaaaaeceeeeeegeeaaaeaeeeeeeeseeeeaeeeeeeeesees 9 5 AC Input Requirements E 10 5 1 AG Oetrange ER irte oficina 10 5 2 AC Input Voltage Specification aaka iia acta 10 5 3 Input Under Voltage EE 10 5 4 EMI tata 11 55 O DFO PO Ub icactsihe seats condac E AE A sneezed ette a enduro hende 11 516 og Bn 11 H r lef 11 5 8 AC Line Transient Specifications alar 12 5 9 AC Line Fast Transient Specification cccccecccecceeceeseeceeeeeceeeeeeaeeeeaeeseeeesaaeeesaaeseeeeeseaeeesuaeeeeeeeeaees 12 6 DC Output Specification taaan 13 6 1 ln Eet EE 13 STA 15 6 37 RemoteSense er 15 6 4 Output Wett 15 6 4
28. t In this case two fuses would be required one in the LINE side and one in the NEUTRAL side of the AC inlet to the power supply 5 7 AC Inrush STATUS Required The power supply must meet inrush requirements for any rated AC voltage during turn on at any phase of AC voltage during a single cycle AC dropout condition during repetitive ON OFF cycling of AC and over the specified temperature range Top The peak inrush current shall be less than the ratings of its critical components including input fuse bulk rectifiers and surge limiting device SSI EPS1U Power Supply Design Guide V1 1 STATUS Recommended An additional inrush current limit is recommended for some system applications that require multiple systems on a single AG circuit AC line inrush current shall not exceed 30 A peak for one quarter of the AC cycle after which the input current should be no more than the specified maximum input current from Table 3 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 defined as the AC line voltage dropping below nominal voltage Surge 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 Table 4 AC L
29. tage There is no efficiency requirement for the 125W version 5 5 AC Line Dropout STATUS Required An AC line dropout 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 An AC line dropout of one cycle or less shall not cause any tripping of control signals or protection circuits If the AC dropout lasts longer than one cycle the power supply should recover and meet all turn on requirements The power supply must meet the AC dropout requirement over rated AC voltages frequencies and output loading conditions Any dropout of the AC line shall not cause damage to the power supply 5 6 AC Line Fuse STATUS Required The power supply shall incorporate one input fuse on the LINE side for input over current protection to prevent damage to the power supply and meet product safety requirements Fuses should be slow blow type or equivalent to prevent nuisance trips 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 STATUS Optional Some system applications may require a second input fuse in the NEUTRAL side of the AC inpu
30. tion 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 de asserted to a LOW state See Figure 5 for a representation of the timing characteristics of PWOK The start of the PWOK delay time shall be inhibited as long as any power supply output is in current limit Table 21 PWOK Signal Characteristics Signal Type Open collector drain output from power supply Pull up to VSB located in power supply PWOK High Power OK PWOK Low Power not OK MIN MAX Logic level low voltage Isink 4 mA OV 0 4V Logic level high voltage Isource 200 A 24V 5 25 V Sink current PWOK low 4mA Source current PWOK high 2mA PWOK delay T pwok on 200 ms 1000 ms PWOK rise and fall time 100 us Power down delay T sech off 1 ms SSI EPS1U Power Supply Design Guide V1 1 8 3 ACWarning STATUS Optional This is an output signal from the power supply which provides a warning to the system that the power supply has lost its AC input This signal also provides a signal to synchronize the turn on of multiple power supplies At turn on this signal is pulled LOW when the supply s internal bulk voltage has reached a level that allows it to turn on At turn off ACWarning goes HIGH when the internal bulk voltage drops low enough The characteristics of the ACWarning signal is shown in
31. trtr or a E oO LO m d i 7 62 MIN i i z gt je 21 59 0 053 62 gt lt 1 27 0 05 A EN 6 35 4005 pan oo 3 FR i lt 6 35 0 05 9 spaces 2 543 l lt 1 07 0 05 6 35 0 05 0 38 x 45 29 03 0 05 A PIER 1 57x 45 4 5 08 MIN ae Reserved ACWarning Reserved Reserved C J Reserved o ReservedL____ 2 Removed bin NC Bottom view of power supply Figure 3 Edge Finger Layout SSI EPS1U Power Supply Design Guide V1 1 6 2 Grounding STATUS Required The ground of the pins of the power supply wire harness provides the power return path The wire harness ground pins shall be connected to safety ground power supply enclosure 6 3 Remote Sense STATUS Optional The power supply may have remote sense return ReturnS to regulate out ground drops for all output voltages 3 3 V 5 V 12 V1 12 V2 12 V and 5 VSB The power supply may use remote sense 3 3VS to regulate out drops in the system for the 3 3 V output The 5 V 12 V1 12 V2 12 V and 5 VSB outputs only use remote sense referenced to the ReturnS signal The remote sense input impedance to the power supply must be greater than 200 Q on 3 3 VS and ReturnS This is the value of the resistor connecting the remote sense to the output voltage internal to the power supply Remote sense must be able to regulate out a minimum of 200 mV drop on the 3 3 V output The r
32. ts specified in EN55024 Specific tests are to be EN61000 4 2 3 4 5 6 8 and 11 The power supply must maintain normal performance within specified limits This testing must be completed by the system EMI engineer Conformance must be designated with the European Union CE Marking Specific immunity level requirements are left to customer requirements
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