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参数资料
| 型号： | LW100-51 |
| 厂商： | POWER-ONE INC |
| 元件分类： | 电源模块 |
| 英文描述： | 4-OUTPUT 100 W AC-DC REG PWR SUPPLY MODULE |
| 文件页数： | 5/9页 |
| 文件大小： | 398K |
| 代理商： | LW100-51 |
Benign Environment
AC-DC Converters
≤100 Watt
LW Series
Edition 4/4.99
5/9
MELCHER
The Power Partners.
Operation Instructions
Table 4: Input and output terminals
Terminal
Function
Explanation
L
1. Connect to AC with sine wave of 47...63 Hz, 85...132 V AC/180...264 V AC, single phase.
Input terminals
2. Use a double or triple core cable for an input line.
N
3. Space the AC input line as far as possible from the DC output line.
FG
Frame ground terminal
Connect with low impedance to ground line of equipment on which the power supply is mounted.
V1
Output Terminal 1
Supplies stabilized output of 5 V DC. (LW 100 has also 24 V.)
V2
Output Terminal 2
Supplies stabilized output of 12 or 15 V DC. (LW 100 has also 24 V.)
V3
Output Terminal 3
Supplies stabilized output of –12, –15 or –5 V DC. (LW 100 has also 12 V.)
V4
Output Terminal 4
Supplies stabilized output of –12 V DC. (LW 100 only.)
G1, G2
Ground Terminals
G1: ground terminal for V1, G2: ground terminal for V2 and V3.
G1 and G2 are internally interconnected.
Proper Method of Operation
To achieve the proper output voltage from each of the three
output channels, the load currents must be within the mini-
mum-maximum ratings. If the load current is below the
minimum, add a pre-load.
Series or Parallel Operation
The outputs cannot be operated in series or parallel con-
nection with other sources.
Overvoltage Protection
The LW 50 and LW 100 have an overvoltage sensing circuit
built into their V1 (+5 V or 24 V (LW 100)) output.
Inrush Current
All models in this series feature circuits to limit in-rush cur-
rent. The LW 50 has a power thermistor, and the LW 100
has a thyristor circuit. Choose an appropriate AC switch for
each model based on specifications. Avoid switching the
AC input on and off repeatedly in rapid succession. (Wait
approximately 2 minutes for models with thermistors and
approximately 10 seconds for models with thyristors.)
Output Current Limitation
Each channel has its own built-in overload protection at
above 105% of the rated currents. In the case of overload-
ing, the circuit operates to eliminate the excess current. The
circuit then automatically resets.
Fig. 3
Allowed maximum output power versus ambient tempera-
ture
1.2
1.0
0.8
0.6
0.4
0
10
20
60
70
0.2
40
50
Po/Po max
TA [°C]
30
–10
0
05118
Thermal Considerations
The relation between the maximum allowed output power
Po allwed, the temperature TA of the surrounding air and the
mounting method is given in the:
Installation Instruction.
The percentage rates apply if the AC-DC converter is lo-
cated in free, quasi-stationary air (convection cooling).
The following figure shows the allowed output power of an
AC-DC converter if mounting method A is used.
For
Po max values see: Type Survey and Key Data. The ther-
mal conditions are influenced by input voltage, output cur-
rent, airflow and temperature of surrounding components
and surface.
Caution: The installer must ensure that under all operat-
ing conditions
TA remains within the limits stated in the
table.
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