FM2540-7PAHF PDF预览

FM2540-7PAHF

更新时间: 2025-07-24 05:29:55
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BEL 电源电路
页数 文件大小 规格书
25页 568K
描述
DC-DC Regulated Power Supply Module, 2 Output, 50W, Hybrid, METAL, CASE M02, MODULE

FM2540-7PAHF 数据手册

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Cassette Style  
DC-DC Converters  
M Series  
Functional Description  
mary switching transistor. This signal is fed back via a cou-  
pling transformer.  
The input voltage is fed via an input fuse, an input filter, a  
rectifier 3 and an inrush current limiter 4 to the input capaci-  
tor. This capacitor sources a single transistor forward con-  
verter. Each output is powered by a separate secondary  
winding of the main transformer. The resultant voltages are  
rectified and their ripples smoothed by a power choke and  
an output filter. The control logic senses the main output  
voltage Uo1 and generates, with respect to the maximum  
admissible output currents, the control signal for the pri-  
The auxiliary outputs Uo2 and Uo3 are individually regulated  
by means of secondary switching transistors. Each aux-  
iliary output's current is sensed using a current transformer.  
If one of the outputs is driven into current limit, the other out-  
puts will reduce their output voltages as well because all  
output currents are controlled by the same main control cir-  
cuit.  
P
03009  
2
i
5
D/V  
4
Main control circuit  
14  
17  
R
G
4
20  
23  
CY  
Output 1  
filter  
29  
Vi+  
1
2
3
CMKT  
14  
17  
Control  
circuit  
Output 2  
filter  
CMKT  
8
32  
26  
Vi–  
Output 3  
filter  
Control  
circuit  
11  
CY  
Fig. 1a  
Block diagram, class I equipment  
P
03010  
CY  
CY  
2
i
5
D/V  
4
4
Main control circuit  
14  
17  
R
G
20  
23  
Output 1  
filter  
29  
Vi+  
1
2
3
CMKT  
14  
17  
Control  
circuit  
Output 2  
filter  
CMKT  
8
32  
Vi–  
Output 3  
filter  
Control  
circuit  
11  
Fig. 1b  
Block diagram, class II equipment (double insulation)  
1 Transient suppressor diode in AM, BM, CM, FM and CMZ types.  
2 Bridge rectifier in LM and LMZ, series diode in EM types.  
3 Inrush current limiter (NTC) in CM, DM, EM, LM and CMZ, DMZ, LMZ types (option E: refer to the description of option E).  
4 Single output modules AM...LM 1000 and CMZ...LMZ 1000 with feature R.  
For output configuration please refer to table: Pin allocation.  
Edition 01/01.2001  
4/25  

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