SSI America ERP2U manual Ripple / Noise, Capacitve Loading Conditions, Ripple and Noise

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SSI

ERP2U Power Supply Design Guide, V2.31

Required

The power supply shall be stable and meet all requirements, except dynamic loading requirements, with the following capacitive loading ranges.

Note: Up to 10,000 μF of the +12V capacitive loading may be on the +12V1 output.

Table 22: Capacitve Loading Conditions

Output	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

6.8Ripple / 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 of measurement.

Table 23: Ripple and Noise

+3.3 V	+5 V	+12 V	-12 V
50 mVp-p	50 mVp-p	120 mVp-p	120 mVp-p

+5 VSB

50 mVp-p

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Contents SSI ERP2U Power Supply Design Guide Disclaimer Contents Tables Error! Bookmark not definedFRU Device Product Information Area Conceptual Overview PurposeRequired Definitions/Terms/AcronymsRequired Optional Mechanical OverviewAirflow Requirements Temperature RequirementsRecommended Acoustic Sound Power Levels Acoustic RequirementsRedundant AC Inlets AC Inlet ConnectorAC Input Voltage Specification AC Input RequirementsAC Input Rating Input Under VoltageEfficiency AC Line DropoutAC Line Sag Transient Performance AC Line Transient SpecificationAC Line Fuse AC InrushAC Line Surge AC Line Fast Transient SpecificationAC Line Surge Transient Performance P1 Baseboard Power Connector DC Output SpecificationOutput Connectors Required Baseboard power connectorPeripheral Power Connectors 2 +12V4 Baseboard Power ConnectorRequired Peripheral Power Connectors Required Floppy Power ConnectorServer Signal Connector Serial ATA Power ConnectorServer Signal Connector Floppy Power Connector550 W Load Ratings Output Power/CurrentsGrounding Remote Sense650 W Load Ratings 600 W Load Ratings750 W Load Ratings 700 W Load Ratings800 W Load Ratings Fan operation in standby modeVoltage Regulation Standby OutputsTransient Load Requirements Dynamic LoadingCapacitive Loading Voltage Regulation LimitsRipple and Noise Ripple / NoiseCapacitve Loading Conditions Hot Swap Requirements RedundancyDescription Timing RequirementsOutput Voltage Timing Recommended Description Turn On/Off TimingTurn On/Off Timing Over Current Protection Protection CircuitsCurrent Limit 240VA ProtectionOutput Voltage Over Temperature ProtectionOver Voltage Protection Over Voltage LimitsPSON# Control and Indicator FunctionsPson # Signal Characteristic Signal Type Pwok delaySMBus Communication Pwok Power OKPower Supply Management Interface Pwok Signal CharacteristicsFRU Device Information Field Replacement Unit FRU SignalsModule FRU Data Module FRU Data Format Product Info AreaField Name PS Info Field Information Definition LED IndicatorsMultiRecord Area Power Supply LEDs LED Indicators10Agency Requirements Mtbf

ERP2U specifications

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