參數(shù)資料
      型號(hào): LK4301-7ED0TB1
      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: HEAT SINK, METAL, CASE K02
      文件頁數(shù): 22/28頁
      文件大?。?/td> 1215K
      代理商: LK4301-7ED0TB1
      Rugged Environment
      AC-DC Converters >100 Watt
      K Series
      Edition 4/4.99
      3/28
      MELCHER
      The Power Partners.
      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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