參數(shù)資料
    型號： LK4601-9EPD4TB1
    廠商： POWER-ONE INC
    元件分類： 電源模塊
    英文描述： 1-OUTPUT 150 W AC-DC PWR FACTOR CORR MODULE
    封裝： METAL, CASE K02, MODULE
    文件頁數(shù)： 22/28頁
    文件大?。?/td> 994K
    代理商： LK4601-9EPD4TB1
    Cassette Style
    AC-DC Converters
    S Series PFC
    Edition 5/5.2000
    3/28
    Functional Description
    The input voltage is fed via an input fuse, an input lter, a
    rectier and an inrush current limiter to a single transistor
    boost converter. This converter provides a sinusoidal in-
    put current (IEC/EN 61000-3-2, class D equipment) and
    sources a capacitor with a voltage of 360-370 VDC. This
    capacitor sources a single transistor forward converter.
    Each output is powered by a separate secondary winding
    on the main transformer. The resultant voltages are recti-
    ed and their ripples smoothed by a power choke and an
    output lter. The control logic senses the main output volt-
    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
    18
    20
    22
    12
    4
    6
    8
    10
    14
    Y
    Output
    filter
    1
    28
    30
    32
    24
    3
    –
    +
    Y
    Forward
    converter
    (approx.
    80
    kHz)
    +
    Boost
    converter
    (PFC)
    360
    V
    DC
    Ci
    4
    03001
    R
    i
    D/V
    T
    S+
    Vo+
    Vo–
    S–
    26
    N
    P~
    Fig. 1
    Block diagram of single output converters LK 4000
    Input
    filter
    Control
    circuit
    1
    P
    2
    16
    18
    20
    22
    12
    14
    4
    6
    8
    10
    Output
    2
    filter
    Output
    1
    filter
    26
    28
    30
    32
    24
    3
    –
    +
    Y
    Forward
    converter
    (approx.
    80
    kHz)
    Boost
    converter
    (PFC)
    +
    360
    V
    DC
    Ci
    4
    03002
    N~
    P~
    R
    i
    D
    T
    Vo1+
    Vo1–
    Vo2+
    Vo2–
    Fig. 2
    Block diagram of symmetrical double output converters LK 5000
    1 Transient suppressor (VDR).
    2 Inrush current limiter (NTC or option E), -9 versions exclude the NTC.
    3 Input fuse.
    4 Hold-up capacitor.
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