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SE7221BK1-E Technical Product Specification
Revision 1.3
70
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
regulation.
1500
msec
T ac_on_delay
Delay from AC being applied to all output voltages
being within regulation.
2500
msec
Tvout_holdup
Time all output voltages stay within regulation after
loss of AC.
21
msec
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
regulation limits.
5 400
msec
T pson_pwok
Delay from PSON
#
deactive to PWOK being de-
asserted.
50
msec
Tpwok_on
Delay from output voltages within regulation limits to
PWOK asserted at turn on.
100 1000
msec
T pwok_off
Delay from PWOK de-asserted to output voltages
(3.3V, 5V, 12V, -12V) dropping out of regulation
limits.
1 200
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 5VSB being in regulation to O/Ps being in
regulation at AC turn on.
50 1000
msec
T5VSB_holdup
Time the 5VSB output voltage stays within regulation
after loss of AC.
70
msec
Vout
10%
Vout
Tvout
_
rise
Tvout_on
Tvout_off
V1
V2
V3
V4