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Intel Alternate Enclosure Drawing, EPS1U Power Supply Design Guide, Ac I/P, 53.0 + 106.0 +

Models: EPS1U

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SSI

EPS1U Power Supply Design Guide, V1.1

4.2Alternate 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.

53.0 +/- 0.2

106.0 +/- 0.2

Bi-Color LED

(PWR/Fail) IEC Connector

Center Line

40.0 +0.2/-0.5

Fan

AC I/P

Fan

Exterior Face

16.4+/- 0.2

IEC Connector

Center Line

215.0+/-0.2

Interior Face

All dimensions are in millimeters.

Figure 2: Alternate Enclosure Drawing

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Intel Alternate Enclosure Drawing, EPS1U Power Supply Design Guide, Ac I/P, 53.0 + 106.0 +, 40.0 +0.2/-0.5, 16.4 +

Contents

EPS1U Power Supply Design Guide A Server System Infrastructure SSI SpecificationFor 1U Rack Chassis Power Supplies EPS1U Power Supply Design GuideEPS1U Power Supply Design Guide DisclaimerContents DC Output SpecificationControl and Indicator Functions PurposeEPS1U Power Supply Design Guide FiguresTables 1 Purpose 2 Conceptual OverviewEPS1U Power Supply Design Guide 3 Definitions/Terms/AcronymsTable 1 Definitions, Terms, and Acronyms listed alphabetically Figure 1 Enclosure Drawing 4.1 High Power Card Edge Form Factor4 Mechanical Overview 4.2 Alternate Enclosure Figure 2 Alternate Enclosure DrawingEPS1U Power Supply Design Guide AC I/PTable 2 Thermal Requirements 4.4 Temperature Requirements4.3 Airflow Requirements 5.1 AC Inlet Connector 5.2 AC Input Voltage Specification5 AC Input Requirements 5.3 Input Under Voltage5.4 Efficiency 5.5 AC Line Dropout5.6 AC Line Fuse 5.7 AC Inrush5.8 AC Line Transient Specification 5.9 AC Line Fast Transient SpecificationTable 4 AC Line Sag Transient Performance Table 5 AC Line Surge Transient PerformanceTable 6 Edge Finger Pinout 6 DC Output Specification6.1 Connector Figure 3 Edge Finger Layout 6.3 Remote Sense 6.4 Output Power/Currents6.2 Grounding Table 7 125 W Load Ratings Table 8 250 W Load Ratings6.4.1 Standby Outputs Table 9 350 W Load Ratings6.5 Voltage Regulation 6.6 Dynamic LoadingTable 10 Voltage Regulation Limits Table 11 Optional +5V Regulation Limits6.7 Capacitive Loading 6.8 Ripple / NoiseTable 13 Capacitive Loading Conditions Table 14 Ripple and NoiseFigure 4 Output Voltage Timing 6.9 Timing RequirementsTable 15 Output Voltage Timing Table 16 Turn On/Off Timing EPS1U Power Supply Design GuideTvoutholdup TpwokholdupFigure 5 Turn On/Off Timing Signal Power Supply EPS1U Power Supply Design GuideTACondelay Tsbondelay Tvoutholdup Tpwoklow Tpwokoff Tsbondelay7 Protection Circuits 7.1 Current Limit7.2 240VA Protection Table 17 Over Current ProtectionTable 19 Over Voltage Limits 7.4 Over Temperature Protection7.3 Over Voltage Protection 8 Control and Indicator Functions Table 20 PSON# Signal CharacteristicFigure 6 PSON# Signal Characteristics 8.1 PSON#8.2 PWOK Power OK Table 21 PWOK Signal CharacteristicsTable 22 ACWarning Signal Characteristics 8.3 ACWarning8.4 Field Replacement Unit FRU Signals 8.4.1 FRU Data8.4.2 FRU Data Format 8.4.2.1 Product Info Area8.4.2.2 MultiRecord Area Table 25 FRU Device MultiRecord AreaEPS1U Power Supply Design Guide Field Name PS Info9 MTBF 8.5 LED IndicatorTable 26 LED Indicators 10 Agency Requirements