SSI America ERP2U manual Turn On/Off Timing, Recommended Description

Page 26

SSI

ERP2U Power Supply Design Guide, V2.31

 

Table 25: Turn On/Off Timing

Item

Description

MIN

Tsb_on_delay

Delay from AC being applied to 5 VSB being

 

 

within regulation.

 

 

 

 

T ac_on_delay

Delay from AC being applied to all output voltages

 

 

being within regulation.

 

Tvout_holdup

Time all output voltages stay within regulation

18

 

after loss of AC.

 

 

 

 

Tpwok_holdup

Delay from loss of AC to deassertion of PWOK.

17

 

 

 

Tpson_on_delay

Delay from PSON# active to output voltages within

5

 

regulation limits.

 

T pson_pwok

Delay from PSON# deactive to PWOK being

 

 

deasserted.

 

 

 

 

Tpwok_on

Delay from output voltages within regulation limits

100

 

to PWOK asserted at turn on.

 

 

 

 

T pwok_off

Delay from PWOK deasserted to output voltages

1

 

(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

 

during an off/on cycle using AC or the PSON#

 

 

signal.

 

 

 

 

Tsb_vout

Delay from 5 VSB being in regulation to O/Ps

50

 

being in regulation at AC turn on.

 

 

 

 

MAX

1500

2500

400

50

500

1000

UNITS

ms

ms

ms

ms

ms

ms

ms

ms

ms

ms

STATUS

Recommended

Item

Description

MIN

Tvout_holdup

Time all output voltages stay within regulation

21

 

after loss of AC.

 

 

 

 

Tpwok_holdup

Delay from loss of AC to deassertion of PWOK.

20

 

 

 

Tsb_holdup

Time 5VSB output voltage stays within regulation

70

 

after loss of AC.

 

 

 

 

MAX

UNITS

ms

ms

ms

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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 AC Line Fast Transient SpecificationAC Line Surge Transient Performance 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 RequirementsRipple and Noise Ripple / NoiseCapacitve Loading Conditions Redundancy Hot Swap RequirementsDescription Timing RequirementsOutput Voltage Timing 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 InformationField Name PS Info Field Information Definition LED IndicatorsMultiRecord Area LED Indicators Power Supply LEDsMtbf 10Agency Requirements

ERP2U specifications

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