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參數資料
| 型號： | 12H2540-7D2 |
| 廠商： | POWER-ONE INC |
| 元件分類： | 電源模塊 |
| 英文描述： | 2-OUTPUT 50 W DC-DC REG PWR SUPPLY MODULE |
| 封裝： | METAL, CASE H02, MODULE |
| 文件頁數： | 10/19頁 |
| 文件大小： | 356K |
| 代理商： | 12H2540-7D2 |
3
5.1 V
4.875 V
0
V
i [VDC]
0
t
V
ti + Vhi
V
ti
Input voltage failure
Switch-on cycle
Input voltage sag
Switch-on cycle and subsequent
input voltage failure
V
V high
V
V low
V
0
V2
t
V
o1
0
V
V high
V
V low
V
0
V2
V
i
V
ti
4
Output voltage failure
0
V
V high
V
V low
V
3
V
ti + Vhi
t
low min
2
t
low min
2
t
low min
2
3
4
V
V high
V
V low
V
0
V3
t
3
t
low min
2
t
low min
2
3
t
h
1
2.0 V
t
h
1
4
3
4
t
low min
2
V3
5.1 V
4.875 V
0
V
o1
2.0 V
Input voltage monitoring
Output voltage monitoring
11010
t
Fig. 21
Relationship between Vi, Vo1, VV, IV and Vo1/Vo nom versus time.
1 VME request: minimum 4 ms
2 tlow min = 40 to 200 ms, typically 80 ms
3 VV level not defined at Vo1 < 2.0 V
4 The V signal drops simultaneously with the output voltage, if the
pull-up resistor
RP is connected to Vo1+. The V signal remains
high if
RP is connected to an external source.
Fig. 20
Definition of Vti,
ΔVti and Vhi
Threshold tolerances and hysteresis:
If
Vi is monitored, the internal input voltage is measured
after the input filter. Consequently this voltage differs from
the voltage at the connector pins by the voltage drop
ΔVti
across input filter and rectifier. The value of
ΔVti depends
upon
the
input
voltage
range,
threshold
level
Vt,
temperature, and input current. The input current is a
function of input voltage and output power.
REV. MAR 27, 2006
Page 18 of 19
www.power-one.com
ΔV
ti
Vhi
VV low
VV
VV high
Vi
P
o
=
P
o
nom
P
o
=
0
P
o
=
0
Vti
P
o
=
P
o
nom
11023
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|---|---|
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