SE7221BK1-ETechnical Product Specification

Vout

10% Vout

V1

V2

V3

V4

Tvout_rise

Tvout_off

Tvout_on

Figure 8. Output Voltage Timing

Table 81. Turn On/Off Timing

 

Item

Description

MIN

MAX

UNITS

 

 

Tsb_on_delay

Delay from AC being applied to 5VSB being within

 

1500

msec

 

 

 

regulation.

 

 

 

 

 

 

 

 

 

 

T ac_on_delay

Delay from AC being applied to all output voltages

 

2500

msec

 

 

 

being within regulation.

 

 

 

 

 

 

 

 

 

 

Tvout_holdup

Time all output voltages stay within regulation after

21

 

msec

 

 

 

loss of AC.

 

 

 

 

 

 

 

 

 

 

Tpwok_holdup

Delay from loss of AC to de-assertion of PWOK

20

 

msec

 

 

 

 

 

 

 

 

 

Tpson_on_delay

Delay from PSON# active to output voltages within

5

400

msec

 

 

 

regulation limits.

 

 

 

 

 

 

 

 

 

T pson_pwok

Delay from PSON# deactive to PWOK being de-

 

50

msec

 

 

 

asserted.

 

 

 

 

 

 

 

 

 

 

Tpwok_on

Delay from output voltages within regulation limits to

100

1000

msec

 

 

 

PWOK asserted at turn on.

 

 

 

 

 

 

 

 

 

T pwok_off

Delay from PWOK de-asserted to output voltages

1

200

msec

 

 

 

(3.3V, 5V, 12V, -12V) dropping out of regulation

 

 

 

 

limits.

 

 

 

 

 

Tpwok_low

Duration of PWOK being in the de-asserted state

100

 

msec

 

 

 

during an off/on cycle using AC or the PSON signal.

 

 

 

 

 

 

 

 

 

 

Tsb_vout

Delay from 5VSB being in regulation to O/Ps being in

50

1000

msec

 

 

 

regulation at AC turn on.

 

 

 

 

 

 

 

 

 

T5VSB_holdup

Time the 5VSB output voltage stays within regulation

70

 

msec

 

 

 

after loss of AC.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

70

 

 

 

Revision 1.3

 

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Intel SE7221BK1-E manual Output Voltage Timing Turn On/Off Timing