ıķ
2.3.3. +5Vsb (Standby Voltage Output)
+5Vsb is a standby voltage output that is active whenever the AC power is present.
It provides a power source for circuits that must remain operational when the four
main DC output rails are in a disabled state. Example uses include soft power
control, Wake on LAN, wake on modem, intrusion detection, or suspend state
activities. There is over current protection on the +5Vsb output to ensure the
power supply will not be damaged if external circuits draw more current than the
supply can provide.
2.3.4. Power-on Time
2.3.5. Rise Time
The output voltage rise from
≤
10% of nominal to within the regulation ranges
specified in section 2.2.1 within 0.2 ms to 20 ms (0.2 ms
≤
T2
≤
20 ms)
2.3.6. Power Sequencing
The +12V1 and +5V output levels are equal to or greater than the +3.3V output at
all times during power-up and normal operation. The time between the +12V1 or
+5V output reaching its minimum in-regulation level and +3.3V reaching its
minimum in-regulation level is
≤
20 msec.
2.3.7. Overshoot at Turn-on / Turn-off
The output voltage overshoot upon the application or removal of the input voltage,
or the assertion / de-assertion of PS_ON will be less than 10% above the nominal
voltage.
2.3.8. Reset after Shutdown
If the power supply latches into a shutdown state because of a fault condition on its
outputs, the power supply can return to normal operation only after the fault
condition has been removed and the PS_ON has been cycled OFF/ON with a
minimum OFF time of 1 second.
The power-on time is defined as the time from when PS_ON is pulled low to when
the12V1, +5V, and +3.3V output are within the regulation ranges specified in
Section 2.2.1. The power-on time will be less than 150ms (T1 <150 ms). +5Vsb
has a power on time of one second max. after the valid AC Voltages applied.
Min
Max
V
IL
, Input Low Voltage
0.0V
0.8V
I
IL
, Input Low Current (Vin = 0.4V)
-1.6mA
V
IH
, Input high Voltage (lin = -200uA)
2.0V
V
IH
, open circuit, lin =0
-5.25V
Ripple/Noise
400
mV
p-p
Table 11. PS_ON Signal Characteristics
Содержание DA1000R Gold
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