DS760SL Series Data Sheet

Outputs - All Models

Turn On/Off Timing

Item

Description

Min

Max

Units

Tvout_rise

+12 Output rise time

10

300

mSec

Tvout_rise

5.0 Vsb output rise time

1

50

mSec

Tsb_on_delay

Delay from AC being applied to 5.0 Vsb being within regulation.

1500

mSec

Tac_on_delay

Delay from AC being applied to all output voltages being within regulation.

3000

mSec

Tvout_holdup

Time all output voltages, including 5.0 Vsb, stay within regulation after loss of AC.

12

mSec

Tpwok_holdup

Delay from loss of AC to de-assertion of PWOK

5

mSec

Tpson_on_delay

Delay from PSON# active to output voltages within regulation limits.

50

2500

mSec

Tpson_pwok

Delay from PSON# de-active to PWOK being de-asserted.

100

mSec

Tacok_delay

Delay from loss of AC input to de-assertion of ACOK#.

10

mSec

Tpwok_on

Delay from output voltages within regulation limits to PWOK asserted at turn on.

100

1000

mSec

Tpwok_off

Delay from PWOK de-asserted to 12 Vdc or 5.0 Vsb dropping out of regulation limits.

1

1000

mSec

Tpwok_low

Duration of PWOK being in the de-asserted state during an off/on cycle using AC or the PSON# signal.

100

mSec

Tsb_vout

Delay from 5.0 Vsb being in regulation to 12 Vdc being in regulation at AC turn on.

50

1000

mSec

PSON #

The PSON# signal is required to remotely turn on/off the power

supply. PSON# is an active low signal that turns on the +12 Vdc

power rail. When this signal is not pulled low by the system, or left

open, the +12 Vdc output turns off. The 5.0 Vsb output remains

on. This signal is pulled to a standby voltage by a pull-up resistor

internal to the power supply. The power supply fan(s) shall operate

at the lowest speed.

PSON Signal Characteristics

Signal Type

Accepts an open collector/drain

input from the system. Pulled-up

to the 5.0 Vsb located in power

supply.

PSON# = Low

ON

PSON# = Open

OFF

MIN

MAX

Logic level low (power supply ON)

0 V

0.8 V

Logic level high (power supply OFF)

2.0 V

4.125 V

Source current, Vpson = low

4 mA

Power up delay: Tpson_on_delay

5 msec

200 msec

PWOK Signal Characteristics

Signal Type

Open collector/drain output

from power supply. Pullup to

5.0 Vsb external to the power

supply.

PWOK = High

Power Good

PWOK = Low

Power Not Good

MIN

MAX

To tLogic level low voltage, Ising = 4 mA

0 V

0.8 V

Logic level high voltage, Isource = 200 µA

2.0 V

4.125 V

Sink current, PWOK = low

4 mA

Source current, PWOK = high

2 mA

PWOK# (POWER GOOD)

PPWOK is a power good signal and will assert HIGH when the

outputs are within the regulation limits. PWOK will be pulled LOW

by the power supply to indicate when either output falls below

regulation limits or when AC power has been removed for a time

sufficiently long so that power supply operation is no longer guaran-

teed. The start of the PWOK# delay time shall be inhibited as long

as the +12 Vdc output is in current limit or the 5.0 Vsb output is

below the regulation limit.