SE7221BK1-E Technical Product Specification
77
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
Figure 9. Turn On/Off Timing (Power Supply Signals)
10.2.2 Dynamic
Loading
The output voltages shall remain within limits specified for the step loading and capacitive
loading specified in the table below. The load transient repetition rate shall be tested between
50Hz and 5kHz at duty cycles ranging from 10%-90%. The load transient repetition rate is only
a test specification. The
Δ
step load may occur anywhere within the MIN load to the MAX load
conditions.
Table 84. Transient Load Requirements
Output
Δ
Step Load Size
(See note 2)
Load Slew Rate
Test capacitive Load
AC Input
Vout
PWOK
5VSB
PSON
T
sb_on_delay
T
AC_on_delay
T
pwok_on
T
vout_holdup
T
pwok_holdup
T
pson_on_delay
T
sb_on_delay
T
pwok_on
T
pwok_off
T
pwo
T
pson_pw
T
pwok_low
T
sb_vout
AC turn on/off cycle
PSON turn on/off cycle
T
5VSB
_
holdup
