iStarUSA IS-500R2UPD8 Manual De Usuario
Table 6: Capacitive Loading Conditions
Output MIN
MAX
Units
+3.3V 10
12000
uF
!
+5V 10
12000
uF
!
+12V 10
11000
uF
-12V 1
350
uF
+5VSB 1
350
uF
3.4
Dynamic
Loading
The output voltages shall remain within the limits specified in Table-Regulation, ripple and noise for the
step loading and within the limits specified in Table-Transient Load Requirement for the capacitive loading.
The load transient repetition rate shall be tested between 50Hz and 5kHz at duty cycle ranging from
step loading and within the limits specified in Table-Transient Load Requirement for the capacitive loading.
The load transient repetition rate shall be tested between 50Hz and 5kHz at duty cycle 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 shown in Table-Load Range.
Table 7: Transient Load Requirements
Output
ΔStep Load Size
Load Slew Rate
Capacitive Load
+3.3V
30% of Max. Load
0.5 A/uS
!
1000 uF
+5V
30% of Max. Load
0.5 A/uS
!
1000 uF
+12V
65% of Max. Load
0.5 A/uS
2200 uF
+5VSB
30% of Max. Load
0.5 A/uS
1 uF
!
3.5 Overshoot
at
Turn-on/Turn-off
Any output overshoot at turn on shall be less than 10% of the nominal output value. Any overshoot shall
recover to be within regulation requirements in less than 10ms.
recover to be within regulation requirements in less than 10ms.
3.6 Timing
Requirements
Table 8: Output Voltage Timing
Item Description
MIN
MAX
Units
Output voltage rise time from each main output
1
20
mS
Tvout_rise
Output voltage rise time for the 5Vsb out put
1
20
mS
Tvout_on
All main output must be within regulation of each other
within
this time.
within
this time.
50
mS
Tvout_off
All main output must leave regulation within this time
400
mS
Table 9: Turn On/Off Timing
Item Description
MIN
MAX
Units
Tsb_on-delay
Delay from AC being applied to +5VSB being within
regulation.
regulation.
1500
mS