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参数资料
| 型号： | LKP5660-7R |
| 厂商： | Power-One |
| 文件页数： | 26/29页 |
| 文件大小： | 0K |
| 描述： | EURO-CASSETTE 250W 2X 24V |
| 标准包装： | 1 |
| 系列： | * |
第1页第2页第3页第4页第5页第6页第7页第8页第9页第10页第11页第12页第13页第14页第15页第16页第17页第18页第19页第20页第21页第22页第23页第24页第25页当前第26页第27页第28页第29页
K Series with PFC Data Sheet
150 – 280 Watt AC-DC Converters
V ACFAIL Signal (VME)
Available only for models with V o = 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 I V ≤ 48 mA to V V ≤ 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.
V V
Input voltage monitoring
V2
V V high
3
3
t low min 2
4
t low min 2
3
t low min 2
4
11045a
V V low
0
t
V V
V3
V V high
3
3
t low min
2
3
t low min
2
V V low
0
t
V o
5.1 V
4.875 V
2.0 V
0
V b [VDC]
358
355
0
t h 1
t h 1
t
t
Input voltage failure
Switch-on cycle
Input voltage sag
Switch-on cycle and subsequent
input voltage failure
Output voltage monitoring
V2 V V
V V high
V V low
0
4
4
t
V3 V V
V V high
4
3
3
t low min
2
1
VME request: minimum 4 ms
V V low
0
t
2
3
4
t low min = 40 – 200 ms, typ 80 ms
V V level not defined at V o < 2.0 V
The V signal drops simultaneously with the output
voltage, if the pull-up resistor R P is connected to Vo+;
V o
5.1 V
4.875 V
2.0 V
0
V i
V ti + V hi
V ti
0
Output voltage failure
Fig. 41
V cb , V o , V V , I V , V o /V o nom versus time.
t
t
the V signal remains high if R P is connected to an
external source.
BCD20001-G Rev AC, 16-Dec-2010
Page 26 of 29
www.power-one.com
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