參數(shù)資料
型號(hào)： LK2540-9PD2
廠商： POWER-ONE INC
元件分類(lèi)： 電源模塊
英文描述： 2-OUTPUT 150 W AC-DC REG PWR SUPPLY MODULE
封裝： HEAT SINK, METAL, CASE K02, MODULE
文件頁(yè)數(shù)： 20/26頁(yè)
文件大小： 1027K
代理商： LK2540-9PD2
Cassette Style
AC-DC Converters
K Series
Edition 5/5.2000
3/26
Functional Description
The input voltage is fed via an input fuse, an input filter, a
rectifier and an inrush current limiter to the input capacitor.
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
output filter. The control logic senses the main output volt-
Fig. 1
Block diagram of single output converters LK 1000
age
Uo1 and generates, with respect to the maximum ad-
missible output currents, the control signal for the primary
switching transistor.
The second output of double output units is controlled by
the main output but has independent current limiting. If the
main output is driven into current limitation, the second out-
put voltage will fall as well and vice versa.
Input
filter
Control
circuit
P
2
Y
16 R
18 i
20 D/V
22 T
12 S+
4
6
8
10
14 S–
Y
Output
filter
1
30
32
24
3
–
+
Y
Forward
converter
(approx.
120
kHz)
03085
Vo+
Vo–
26
28
N
P
1 Transient suppressor (VDR)
2 Inrush current limiter (NTC or option E), -9 version exclude the NTC
3 Input fuse
Input
filter
Control
circuit
1
P
2
16 R
18 i
20 D
22 T
12 Vo1+
14 Vo1–
4
6
8
10
Output
2
filter
Output
1
filter
3
–
+
Y
Forward
converter
(approx.110
kHz)
03086
Vo2+
Vo2–
30
32
24
26
28
N
P
Fig. 2
Block diagram of symmetrical double output converters LK 2000
相關(guān)PDF資料
PDF描述
LK2540-9PD9B1 2-OUTPUT 150 W AC-DC REG PWR SUPPLY MODULE
LK2660-7D0TB1 2-OUTPUT 150 W AC-DC REG PWR SUPPLY MODULE
LK2660-7EPD4T 2-OUTPUT 150 W AC-DC REG PWR SUPPLY MODULE
LK2660-7EPD4 2-OUTPUT 150 W AC-DC REG PWR SUPPLY MODULE
LK2660-7ERD1TB2 2-OUTPUT 150 W AC-DC REG PWR SUPPLY MODULE
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