Rev. 7.10.09_81

HPS3000 Series

5 of 7

Embedded Power for

Business-Critical Continuity

TimingSignalDefinitions

TurnON/OFFTiming

Item

Description

Min

Max

Units

Tvout_rise

48VOutputrisetime

5

300

msec

Tsb_on_delay

DelayfromACbeingappliedto5Vsbbeingwithinregulation.

1500

msec

Tac_on_delay

DelayfromACbeingappliedtoalloutputvoltagesbeingwithin

regulation.

2000

msec

Tvout_holdup

Timealloutputvoltages,including5Vsb,staywithinregulation

afterlossofAC.

10

msec

Tpwok_holdup

DelayfromlossofACtode-assertionofPWOK

5

msec

Tpson_on_delay DelayfromPSON#activetooutputvoltageswithinregulation

limits.

5

400

msec

Tpson_pwok

DelayfromPSON#de-activetoPWOKbeingde-asserted.

50

msec

Tacok_delay

DelayfromlossofACinputtode-assertionofACOK#.

10

msec

Tpwok_on

DelayfromoutputvoltageswithinregulationlimitstoPWOK

asserted at turn on.

100

1000

msec

Tpwok_off

DelayfromPWOKde-assertedto48Vdroppingoutofregulation

limits.

1

1000

msec

Tpwok_low

DurationofPWOKbeinginthede-assertedstateduringanoff/on

cycleusingACorthePSON#signal.

100

msec

Tsb_vout

Delayfrom5Vsbbeinginregulationto48Vbeingin

regulationatACturnon.

50

2000

msec

PSON#

ThePSON#signalisrequiredtoremotelyturnon/offthepowersupply.PSON#isanactivelowsignal

thatturnsonthe48Vpowerrail.Whenthissignalisnotpulledlowbythesystem,orleftopen,the

48Voutputturnsoff.The5Vsboutputremainson.Thissignalispulledtoastandbyvoltagebya

pull-upresistorinternaltothepowersupply.Thepowersupplyfan(s)shalloperateatthelowestspeed.

PSON#SignalCharacteristic

SignalType

Acceptsanopencollector/draininputfrom

thesystem.Pulled-uptothe5Vsblocatedin

power supply.

PSON#=Low

ON

PSON#=Open

OFF

MIN

MAX

Logiclevellow(powersupplyON)

0V

0.8V

Logiclevelhigh(powersupplyOFF)

2.0V

4.80V

Sourcecurrent,Vpson=low

--

4mA

Powerupdelay:Tpson_on_delay

5msec

400msec

SignalsandControls-AllModels