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    • 參數(shù)資料
      型號(hào): LK5540-7D4T
      廠商: POWER-ONE INC
      元件分類: 電源模塊
      英文描述: 2-OUTPUT 150 W AC-DC PWR FACTOR CORR MODULE
      封裝: HEAT SINK, METAL, CASE K02, MODULE
      文件頁數(shù): 5/28頁
      文件大小: 1215K
      代理商: LK5540-7D4T
      Rugged Environment
      AC-DC Converters >100 Watt
      K Series
      Edition 4/4.99
      13/28
      MELCHER
      The Power Partners.
      R
      Vo1+
      Vo1–
      S–
      Uext
      N
      P
      Module
      Rext
      R'ext
      14
      16
      14
      +
      S+
      Vo1+
      Vo1–
      S–
      N
      P
      R
      12
      06003
      Remarks:
      – The R-Function excludes option P (output voltage adjust-
      ment by potentiometer).
      – If the output voltages are increased above
      Uo nom via R-
      input control, option P setting, remote sensing or option
      T, the output current(s) should be reduced accordingly so
      that
      Po nom is not exceeded.
      – The R-input (as well as option P) is related to the main
      output.
      – With double output units the second output follows the
      value of the controlled main output. Resistor values as
      indicated for the single output units should be used.
      – For correct output voltage adjustment of double output
      units the external wiring of the outputs should be accord-
      ing to:
      R-function for different output configurations de-
      pending upon the desired output conguration.
      – In case of parallel connection the output voltages should
      be individually set within a tolerance of 1...2%.
      Fig. 20
      Output voltage control for single output units LK 4000 by
      means of the R input
      Table 7a: Rext for Uo
      < U
      o nom; approximate values (Ui nom, Io nom, series E 96 resistors); R'ext =
      Uo nom = 5.1 V
      Uo nom = 12 V
      Uo nom = 15 V
      Uo nom = 24 V
      Uo (V)
      Rext [k]
      Uo [V] 1
      Rext [k]
      Uo [V] 1
      Rext [k]
      Uo [V] 1
      Rext [k]
      0.5
      0.422
      2
      4
      0.825
      2
      4
      0.56
      4
      8
      0.825
      1.0
      3
      6
      1.3
      4
      8
      1.47
      6
      12
      1.33
      1.5
      1.62
      4
      8
      1.96
      6
      12
      2.61
      8
      16
      1.96
      2.0
      2.16
      5
      10
      2.87
      8
      16
      4.64
      10
      20
      2.87
      2.5
      3.83
      6
      12
      3.83
      9
      18
      6.19
      12
      24
      3.83
      3.0
      5.61
      7
      14
      5.62
      10
      20
      8.25
      14
      28
      5.61
      3.5
      9.09
      8
      16
      8.28
      11
      22
      11.0
      16
      32
      8.25
      4.0
      14.7
      9
      18
      12.1
      12
      24
      16.2
      18
      36
      12.1
      4.5
      28.7
      10
      20
      19.6
      13
      26
      26.1
      20
      40
      19.6
      5.0
      196
      11
      22
      42.2
      14
      28
      56.2
      22
      44
      46.4
      Table 7b: R’ext for Uo
      > U
      o nom; approximate values (Ui nom, Io nom, series E 96 resistors); Rext =
      Uo nom = 5.1 V
      Uo nom = 12 V
      Uo nom = 15 V
      Uo nom = 24 V
      Uo [V]
      R'ext [k]
      Uo [V] 1
      R'ext [k]
      Uo [V] 1
      R'ext [k]
      Uo [V] 1
      R'ext [k]
      5.15
      422
      12.1
      24.2
      1780
      15.2
      30.4
      1470
      24.25
      48.5
      3160
      5.2
      215
      12.2
      24.4
      909
      15.4
      30.8
      750
      24.5
      49.0
      1620
      5.25
      147
      12.3
      24.6
      623
      15.6
      31.2
      511
      24.75
      49.5
      1100
      5.3
      110
      12.4
      24.8
      464
      15.8
      31.6
      383
      25.0
      50.0
      825
      5.35
      90.9
      12.5
      25.0
      383
      16.0
      32.0
      316
      25.25
      50.5
      681
      5.4
      75
      12.6
      25.2
      316
      16.2
      32.4
      261
      25.5
      51.0
      562
      5.45
      61.9
      12.7
      25.4
      286
      16.4
      32.8
      237
      25.75
      51.5
      511
      5.5
      56.2
      12.8
      25.6
      234
      16.5
      33.0
      215
      26.0
      52.0
      464
      13.0
      26.0
      196
      26.25
      52.5
      422
      13.2
      26.4
      162
      26.4
      52.8
      383
      1 First column: single output units or double output units with separated outputs, second column: outputs in series connection
      Programmable Output Voltage (R-Function)
      As a standard feature, the modules offer an adjustable out-
      put voltage, identied by letter R in the type designation.
      The control input R (pin 16) accepts either a control voltage
      Uext or a resistor Rext to adjust the desired output voltage.
      When not connected, the control input automatically sets
      the output voltage to
      Uo nom.
      a) Adjustment by means of an external control voltage
      Uext
      between pin 16 (R) and pin 14:
      The control voltage range is 0...2.75 V DC and allows an
      output voltage adjustment in the range of approximately
      0...110%
      Uo nom.
      Uo
      Uext = –––––– 2.5 V (approximate formula)
      Uo nom
      b) Adjustment by means of an external resistor:
      Depending upon the value of the required output voltage
      the resistor shall be connected
      either: Between pin 16 and pin 14 (
      Uo < Uo nom) to
      achieve an output voltage adjustment range of approxi-
      mately 0...100%
      Uo nom
      or: Between pin 16 and pin 12 (
      Uo
      > U
      o nom) to achieve
      an output voltage adjustment range of approximately
      100...110%
      Uo nom.
      Warning:
      Uext shall never exceed 2.75 V DC.
      – The value of
      R'ext shall never be less than the lowest
      value as indicated in table
      R'ext (for U0
      > U
      0 nom) to
      avoid damage to the unit!
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