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    參數(shù)資料
    型號: LM2320-9PD2AHFU
    廠商: POWER-ONE INC
    元件分類: 電源模塊
    英文描述: 2-OUTPUT AC-DC REG PWR SUPPLY MODULE
    封裝: 168.50 X 111.20 MM, 38.70 MM HEIGHT, METAL, CASE M02, MODULE
    文件頁數(shù): 9/24頁
    文件大?。?/td> 536K
    代理商: LM2320-9PD2AHFU
    M-Family
    DC-DC Converters <100 W
    Rugged Environment
    7 - 18
    Edition 2/96 - Melcher AG
    MELCHER
    The Power Partners.
    7.1
    Option D Undervoltage monitor
    The input and/or output undervoltage monitoring circuit op-
    erates independently of the built-in input undervoltage lock-
    out circuit. A logic "low" (JFET output) or "high" signal (NPN
    output) is generated at pin 5 as soon as one of the moni-
    tored voltages drops below the preselected threshold level
    Ut. The return for this signal is Vo1– (pin 23). The D output
    recovers when the monitored voltage(s) exceed(s)
    Ut+Uh.
    JFET output (D0…D4):
    Connector pin D is internally connected via the drain-
    source path of a JFET (self-conducting type) to the nega-
    tive potential of output 1.
    UD
    ≤ 0.4 V (logic low) corresponds
    to a monitored voltage level (
    Ui and/or Uo1) < Ut. The cur-
    rent
    ID through the JFET should not exceed 2.5 mA. The
    JFET is protected by a 0.5 W Zener diode of 8.2 V against
    external overvoltages.
    Ui, Uo1 status
    D output,
    UD
    Ui or Uo1 < Ut
    low, L,
    UD ≤ 0.4 V at ID = 2.5 mA
    Ui and Uo1 > Ut + Uh
    high, H,
    I D
    ≤ 25 A at UD = 5.25 V
    NPN output (D5...D9):
    Connector pin D is internally connected via the collector-
    emitter path of a NPN transistor to the negative potential of
    output 1.
    UD < 0.4 V (logic low) corresponds to a monitored
    voltage level (
    Ui and/or Uo1) > Ut + Uh. The current ID
    through the open collector should not exceed 20 mA. The
    NPN output is not protected against external overvoltages.
    UD should not exceed 40 V.
    Ui, Uo1 status
    D output,
    UD
    Ui or Uo1 < Ut
    high, H,
    I D ≤ 25 A at UD = 40 V
    Ui and Uo1 > Ut + Uh
    low, L,
    UD
    ≤ 0.4 V at ID = 20 mA
    20
    23
    5
    Vo1+
    Vo1–
    D
    UD
    ID
    Vi+
    Vi–
    29
    32
    Rp
    Table 19: Undervoltage monitor functions
    Output type
    Monitoring
    Minimum adjustment range
    Typical hysteresis
    Uh [ % of Ut]
    JFET
    NPN
    Ui
    Uo1
    of threshold level
    Ut
    for
    Ut min...Ut max
    Uti
    Uto
    Uhi
    Uho
    D1
    D5
    no
    yes
    3.5 V...48 V 1
    2.3...1
    D2
    D6
    yes
    no
    Ui min...Ui max 1–
    3.0...0.5
    D3
    D7
    yes
    Ui min...Ui max 1
    0.95...0.98
    Uo1 2
    3.0...0.5
    "0"
    D4
    D8
    no
    yes
    0.95...0.98
    Uo1 2
    "0"
    D0
    D9
    no
    yes
    3.5 V...48 V 3
    1.8...1
    yes
    no
    Ui min...Ui max 3 4
    2.2...0.4
    yes
    Ui min...Ui max 3 4
    0.95...0.98
    Uo1 2
    2.2...0.4
    "0"
    1 Threshold level adjustable by potentiometer (not recommended for mobile applications)
    2 Fixed value between 95% and 98% of Uo1 (tracking)
    3 Fixed value, resistor-adjusted according to customer's specifications
    ±2% at 25°C; individual type number is determined by Melcher
    4 Adjusted at Io nom
    Fig. 17
    Options D0...D4, JFET output
    Fig. 18
    Options D5...D9, NPN output
    5
    23
    20
    Vo1+
    Vo1–
    D
    UD ≤ 6 V
    ID
    29
    32
    Vi+
    Vi–
    Rp
    The threshold level
    Ut is either adjustable by a potentio-
    meter, accessible through a hole in the front cover, or is fac-
    tory adjusted to a fixed value specified by the customer.
    Option D exists in various versions D0...D9 as shown in the
    following table.
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