参数资料
型号: LK2540-7RTB1
厂商: POWER-ONE INC
元件分类: 电源模块
英文描述: 2-OUTPUT 150 W AC-DC REG PWR SUPPLY MODULE
封装: METAL, CASE K02, MODULE
文件页数: 18/26页
文件大小: 1027K
代理商: LK2540-7RTB1
Cassette Style
AC-DC Converters
K Series
Edition 5/5.2000
25/26
3
5.1 V
4.875 V
0
U
i [V DC]
0
t
U
ti + Uhi
U
ti
Input voltage failure
Switch-on cycle
Input voltage sag
Switch-on cycle and subsequent
input voltage failure
U
V high
U
V low
U
V
0
V2
t
U
o1
0
U
V high
U
V low
U
V
0
V2
U
i
U
ti
4
Output voltage failure
0
U
V high
U
V low
U
V
3
U
ti + Uhi
t
low min
2
t
low min
2
t
low min
2
3
4
U
V high
U
V low
U
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
U
o1
2.0 V
Input voltage monitoring
Output voltage monitoring
11010
t
Threshold tolerances and hysteresis:
If
Ui is monitored, the internal input voltage is measured af-
ter the input filter and rectifier. Consequently this voltage
differs from the voltage at the connector pins by the voltage
drop
DUti across input filter and rectifier. The threshold level
of option V0 is adjusted during manufacture at
Io nom and TA
= 25
°C. The value of DU
ti depends upon the threshold level
Ut, temperature and input current. The input current is a
function of input voltage and output power.
1 VME request: minimum 4 ms
2 tlow min = 40...200 ms, typically 80 ms
3 UV level not defined at Uo1 < 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.
DUti
Uhi
UV low
UV
UV high
Ui
P
o
=
P
o
nom
P
o
=
0
P
o
=
0
Uti
P
o
=
P
o
nom
11023
Fig. 38
Definition of Uti, DUti and Uhi
Fig. 39
Relationship between Ui, Uo1, UV, IV and Uo1/Uo nom ver-
sus time.
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