SSI America ERP2U manual Dynamic Loading, Capacitive Loading, Voltage Regulation Limits

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SSI

 

 

 

 

 

 

 

 

 

ERP2U Power Supply Design Guide, V2.31

 

 

 

 

 

Table 19: Voltage Regulation Limits

 

 

 

Parameter

MIN

 

NOM

MAX

Units

 

Tolerance

 

 

+3.3 V

+3.14

 

+3.30

+3.47

Vrms

 

+/-5%

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

+5 V

+4.75

 

+5.00

+5.25

Vrms

 

+/-5%

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

+12V1,2,3,4

+11.40

 

+12.00

+12.60

Vrms

 

+/-5%

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

-12 V

-10.80

 

-12.20

-13.20

Vrms

 

+/-10%

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

+5 VSB

+4.75

 

+5.00

+5.25

Vrms

 

+/-5%

 

 

 

 

 

 

 

 

 

 

 

 

 

 

STATUS

 

 

 

 

 

 

 

 

 

 

Optional

 

 

 

 

 

 

 

 

 

Some system applications may require tighter regulation limits on the outputs. The optional regulation limits are shown below.

Table 20: Optional +5V Regulation Limits

Parameter

MIN

NOM

MAX

Units

Tolerance

+3.3V

+3.20

+3.30

+3.47

Vrms

+5/-3%

 

 

 

 

 

 

+5 V

+4.85

+5.00

+5.25

Vrms

+5/-3%

 

 

 

 

 

 

+12V1,2,3,4

+11.64

+12.00

+12.60

Vrms

+5/-3%

 

 

 

 

 

 

-12V

-11.40

-12.00

-13.08

Vrms

+9/-5%

 

 

 

 

 

 

+5 VSB

+4.85

+5.00

+5.25

Vrms

+5/-3%

 

 

 

 

 

 

6.6Dynamic 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 transient repetition rate is only a test specification. The Δ step load may occur anywhere within the MIN load to the MAX load range.

Table 21: Transient Load Requirements

Output

Δ Step Load Size

Load Slew Rate

+3.3 V

30% of max load

0.5 A/μs

 

 

 

 

+5

V

30% of max load

0.5 A/μs

 

 

 

12V1+12V2+12V3+12V4

65% of max load

0.5 A/μs

 

 

 

 

+5

VSB

25% of max load

0.5 A/μs

 

 

 

 

Capacitive Load

1000 μF

1000 μF

2200 μF

1μF

6.7Capacitive Loading

STATUS

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Contents SSI ERP2U Power Supply Design Guide Disclaimer Contents Error! Bookmark not defined TablesFRU Device Product Information Area Purpose Conceptual OverviewDefinitions/Terms/Acronyms RequiredMechanical Overview Required OptionalAcoustic Requirements Temperature RequirementsRecommended Acoustic Sound Power Levels Airflow RequirementsAC Input Requirements AC Inlet ConnectorAC Input Voltage Specification Redundant AC InletsAC Line Dropout Input Under VoltageEfficiency AC Input RatingAC Inrush AC Line Transient SpecificationAC Line Fuse AC Line Sag Transient PerformanceAC Line Surge Transient Performance AC Line Fast Transient SpecificationAC Line Surge Required Baseboard power connector DC Output SpecificationOutput Connectors P1 Baseboard Power ConnectorRequired Floppy Power Connector 2 +12V4 Baseboard Power ConnectorRequired Peripheral Power Connectors Peripheral Power ConnectorsFloppy Power Connector Serial ATA Power ConnectorServer Signal Connector Server Signal ConnectorRemote Sense Output Power/CurrentsGrounding 550 W Load Ratings600 W Load Ratings 650 W Load Ratings700 W Load Ratings 750 W Load RatingsStandby Outputs Fan operation in standby modeVoltage Regulation 800 W Load RatingsVoltage Regulation Limits Dynamic LoadingCapacitive Loading Transient Load RequirementsCapacitve Loading Conditions Ripple / NoiseRipple and Noise Redundancy Hot Swap RequirementsOutput Voltage Timing Timing RequirementsDescription Turn On/Off Timing Recommended DescriptionTurn On/Off Timing 240VA Protection Protection CircuitsCurrent Limit Over Current ProtectionOver Voltage Limits Over Temperature ProtectionOver Voltage Protection Output VoltagePwok delay Control and Indicator FunctionsPson # Signal Characteristic Signal Type PSON#Pwok Signal Characteristics Pwok Power OKPower Supply Management Interface SMBus CommunicationProduct Info Area Field Replacement Unit FRU SignalsModule FRU Data Module FRU Data Format FRU Device InformationMultiRecord Area LED IndicatorsField Name PS Info Field Information Definition LED Indicators Power Supply LEDsMtbf 10Agency Requirements

ERP2U specifications

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