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