7
8
115V/230V(FULL LOAD):1mS minimum
4.1 REMOTE ON/OFF CONTROL
The power supply is turned on/off by TTL signal.
Remote On/Off Signal Characteristics
4.2 AUX5Vsb
This power supply is specifically equipped with an independent stand-by +5V
output current, 2.0A max. This output will always p5V except when
the AC line is cut off.
4.3 AUTO RESTART
If the power supply's output dropped out of the regulation caused by AC line
Voltage, the power supply will automatically resume normal operation only after
the AC line voltage returns to the specified operating range.
AC-V
AC-O N
AC-O FF
H IGH
H
IGH
PS-O N
LO W
VB =4.75V
+5V WAVE FO RM
T2
T1
P.G WAVE FORM
T4
TURN-ON
T3
ON
-RING
PO W ER FA IL
PO W ER GO O D
T5 HOL D-UP TIM E
FIGURE 1
Active Low
Power Supply turn on
Active High
Power Supply turn off
PS-ON
MIN MAX
Vil input low voltage
0.8V
Lil, input low current ,Vin=0.4V
-1.6mA
Vih, input High voltage, lin=-200uA 2.0V
Vih open circuit, lin=0
5.25V
has been removed and reset PS-ON for a minimum of 1 second. Then it will
turn on again.
3.1 OVER CURRENT PROTECTION
3.2 OVER VOLTAGE PROTECTION
3.3 SHORT CIRCUIT PROTECTION
Short circuit protection is used to protect the components and the power supply,
if a short circuit happens on a component the current goes to ground.
3.4 UNDER VOLTAGE PROTECTION
+
3.5 OVER TEMPERATURE
The power supply includes an over-temperature protection sensor, which can
trip and shutdown the power supply at 100°C. Such an overheated condition is
typically the result of internal current overloading or a cooling fan failure.
3.6 OVER LOAD PROTECTION
Overload currents to output rail will cause the output trip before they reach or
exceed 110% ~ 160% for protection, the overload currents should be ramped
at a minimum rate of 10 A/s starting from full load.
4.0 TIME SEQUENCE:
T1 Power-On Time (500msec. max.)
T2 Rise-time (20msec. max.)
T3 Power Good Delay Time (100msec. < t3 <500msec.)
T4 Power Fail Delay Time (1msec. min.)
T5 Hold-Up time (20msec. min.)
Over current (Sense level)
+5V +12V
1
&+12V
2
+3.3V
NEO380
40A Min. 52A Max. 19A Min. 26A Max. 34A Min. 45A Max.
NEO480
44A Min. 56A Max. 24A Min. 26A max. 36A Min. 47A Max.
Sense level
Over Voltage
+12V
1
&+12V
2
13.3V Min.
14.3V Max.
+5V
5.7V Min.
6.2V Max.
+3.3V
3.7V Min.
4.1V Max.
Sense level
Under Voltage
12V
1
&+12V
2
9.5V Min.
10.5V Max.
+5V
4.1V Min.
4.47V Max.
+3.3V
2.55V Min.
2.83V Max.
