參數(shù)資料
        型號: LK5320-9ERD1B1
        元件分類: 電源模塊
        英文描述: 2-OUTPUT 150 W AC-DC PWR FACTOR CORR MODULE
        封裝: METAL, CASE K02, MODULE
        文件頁數(shù): 2/28頁
        文件大?。?/td> 606K
        代理商: LK5320-9ERD1B1
        Cassette Style
        150 Watt AC-DC Converters
        K Series PFC
        Edition 01/01.2001
        10/28
        Thermal Protection
        A temperature sensor generates an internal inhibit signal
        which disables the outputs if the case temperature exceeds
        TC max. The outputs are automatically re-enabled if the tem-
        perature drops below this limit.
        Output Protection
        Each output is protected against overvoltage which could
        occur due to a failure of the control circuit by means of a
        voltage suppressor diode which, under worst case condi-
        tions, may become a short circuit. The suppressor diodes
        are not designed to withstand externally applied over-
        voltages. Overload at any of the two outputs will cause a
        shut-down of both outputs. A red LED indicates the over-
        load condition.
        Thermal Considerations
        If a converter is located in free, quasi-stationary air (con-
        vection cooling) at the indicated maximum ambient tem-
        perature
        TA max (see table: Temperature specifications) and
        is operated at its nominal input voltage and output power,
        the temperature measured at the
        Measuring point of case
        temperature TC (see: Mechanical Data) will approach the
        indicated value
        TC max after the warm-up phase. However,
        the relationship between
        TA and TC depends heavily on the
        conditions of operation and integration into a system. The
        thermal conditions are influenced by input voltage, output
        current, airflow and temperature of surrounding compo-
        nents and surfaces.
        TA max is therefore, contrary to TC max,
        an indicative value only.
        Caution: The installer must ensure that under all operat-
        ing conditions
        TC remains within the limits stated in the
        table:
        Temperature specifications.
        Notes: Sufficient forced cooling or an additional heat sink
        allows
        TA to be higher than 71
        °C (e.g. 85°C) if T
        C max is not
        exceeded.
        For -7 or -9 units at an ambient temperature
        TA of 85
        °C with
        only convection cooling, the maximum permissible current
        for each output is approx. 40% of its nominal value as per
        figure.
        It is recommended that continuous operation under simulta-
        neous extreme worst case conditions of the following three
        parameters be avoided: Minimum input voltage, maximum
        output power and maximum temperature.
        -6 versions have reduced
        TA and TC
        0
        0.1
        0.2
        0.3
        0.4
        0.5
        0.6
        0.7
        0.8
        TA min 50
        60
        70
        80
        90
        100
        Io/Io nom
        TA [°C]
        0.9
        1.00
        forced cooling
        convection cooling
        TC max
        -6 -7
        -6
        -7
        05139
        Fig. 8
        Output current derating versus temperature for –7 and –9
        units.
        Efciency versus Load
        0.2
        0.4
        0.6
        0.8
        1
        0
        0.90
        0.30
        0.40
        0.50
        0.60
        0.70
        0.80
        Efficiency
        Io/Io nom
        Ui = 230 V AC
        Ui = 85 V AC
        05007
        Fig. 9
        Efciency versus load at Ui; 230 V AC and 88 V AC
        Switching Frequency versus Load
        0.2
        0.4
        0.6
        0.8
        1
        0
        60
        0
        10
        20
        30
        40
        50
        Frequency [kHz]
        load [Io/Io nom]
        70
        80
        1.2
        05008
        Fig. 10
        Switching frequency versus load. (The boost converter at
        the input stage has a xed frequency of 100 kHz)
        Parallel or Series Connection of Units
        Single or double output units with equal nominal output volt-
        age can be connected in parallel without any precautions
        using option T.
        With option T (current sharing), all units share the current
        approximately equally.
        Single output units and/or main and second outputs of dou-
        ble output units can be connected in series with any other
        (similar) output.
        Note:
        – Parallel connection of double output units should always
        include both, main and second output to maintain good
        regulation of both outputs.
        – Not more than 5 units should be connected in parallel.
        – Series connection of second outputs without involving
        their main outputs should be avoided as regulation may
        be poor.
        – The maximum output current is limited by the output with
        the lowest current limitation if several outputs are con-
        nected in series.
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