參數(shù)資料
型號: LMZ1601-7R
廠商: POWER-ONE INC
元件分類: 電源模塊
英文描述: 1-OUTPUT 50 W AC-DC REG PWR SUPPLY MODULE
文件頁數(shù): 21/26頁
文件大?。?/td> 771K
代理商: LMZ1601-7R
M Series Data Sheet
50 Watt DC-DC and AC-DC Converters
BCD20018 Rev AB
Page 4 of 26
www.power-one.com
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 converter.
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 main control circuit senses the main output voltage Vo1
and generates, with respect to the maximum admissible output
currents, the control signal for the primary switching transistor.
This signal is transferred to the primary side by a coupling
transformer.
The auxiliary output voltages Vo2 and Vo3 are individually
regulated by means of secondary switching transistors. Each
auxiliary output's current is sensed using a current transformer.
If one of the outputs is driven into current limit, the other
outputs will reduce their output voltages as well, because all
output currents are controlled by the same main control circuit.
1 Transient suppressor diode in AM, BM, CM, FM models.
2 Bridge rectifier in LM, series diode in EM models.
3 Inrush current limiter (NTC) in CM, DM, EM, LM models (option E: refer to the description of option E).
4 Single-output models with feature R.
5 LM-models
Fig. 1
Block diagram, triple-output models
Input
filter
Output 1
filter
Output 3
filter
Output 2
filter
Control
circuit
output 3
Main control circuit
Control
circuit
output 2
1
Fuse
Option P
29
11
8
23
5
26
32
17
14
20
2
14
17
3
2
Forward
converter
approx.
70
kHz
4
CY
CZ
Vi+
Vi–
i
D, V
R
G
03009a
5
N
5
L
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