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参数资料
| 型号： | LMZ2540-9ERD8A |
| 厂商： | POWER-ONE INC |
| 元件分类： | 电源模块 |
| 英文描述： | 2-OUTPUT 50 W AC-DC REG PWR SUPPLY MODULE |
| 封装： | METAL, CASE M02, MODULE |
| 文件页数： | 11/24页 |
| 文件大小： | 982K |
| 代理商： | LMZ2540-9ERD8A |
Cassette Style
AC-DC Converters
M Series
Edition 5/5.2000
19/24
Table 21: Inrush current characteristics with option E
Characteristic
LM/LMZ
Unit
Ui = 230 VAC
typ
max
Iinr p
Peak inrush current
6
10
A
tinr
Inrush current duration
35
50
ms
Input
Filter
Control
Converter
FET
Ci
RI
RS
Rectifier
(LM/LMZ types)
11018
Fig. 23
Option E block diagram
6
Ii [A]
4
2
0
-2
-4
-6
0
20
40
60
80
t [ms]
tinr
Capacitor Ci
fully charged
Normal operation
(FET fully conducting)
11040
E Electronic Inrush Current Limitation
The standard versions include a passive inrush current limi-
tation in the form of an NTC resistor.
For applications which require an extended inrush current
limitation, an active electronic circuit as shown in:
Option E
Block diagram has been developed. Typical inrush current
waveforms of units equipped with this option are shown
below.
Caution
In order to avoid overload of the series resistor RI the on/
off switching cycle should be limited to 12 s if switched
on/off continuously. There should not be more than 10
start-up cycles within 20 s at a case temperature of
25
°C.
If the modules are driven by an input voltage below
100 V AC, the maximum case temperature should be de-
rated by 10 K or the total output power should be derated
by 20 %. Units driven by DC input voltages do not need
to be derated within the full specified input voltage
range.
Availability:
Option E is available with a nominal output power of 51 W
maximum.
Fig. 22
Typical inrush current waveform of a LM type at
Ui = 230 V AC and Io nom.
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