參數(shù)資料
型號(hào)： LKP5740-6R
廠商： POWER-ONE INC
元件分類： 電源模塊
英文描述： 2-OUTPUT 250 W AC-DC PWR FACTOR CORR MODULE
封裝： HEAT SINK, METAL, CASE K02, MODULE
文件頁(yè)數(shù)： 18/28頁(yè)
文件大?。?/td> 674K
代理商： LKP5740-6R
BCD20001-G Rev AB
Page 25 of 28
www.power-one.com
K Series with PFC Data Sheet
150 – 280 Watt AC-DC Converters
3
5.1 V
4.875 V
0
V
b [VDC]
0
t
358
355
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
o
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
o
2.0 V
I
nput voltage monitoring
O
utput voltage monitoring
11045a
t
Fig. 40
Vcb, Vo, VV, IV, Vo /Vo nom versus time.
1
VME request: minimum 4 ms
2
tlow min = 40 – 200 ms, typ 80 ms
3
VV level not defined at Vo
< 2.0 V
4
The V signal drops simultaneously with the output
voltage, if the pull-up resistor R P is connected to Vo+;
the V signal remains high if R P is connected to an
external source.
V ACFAIL Signal (VME)
Available only for models with Vo = 5.1 V.
This option defines an undervoltage monitoring circuit for
the input and main output voltage. It generates the ACFAIL
signal (V signal) according to the VME standard.
The low state level of the ACFAIL signal is specified at a
sink current of IV
≤ 48 mA to VV ≤ 0.6 V (open-collector
output of an NPN transistor). The pull-up resistor feeding
the open-collector output should be placed on the VME
backplane.
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