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  • 參數(shù)資料
    型號(hào)： LS1601-7ERD1
    廠商： POWER-ONE INC
    元件分類： 電源模塊
    英文描述： 1-OUTPUT AC-DC REG PWR SUPPLY MODULE
    封裝： HEAT SINK, METAL, CASE S02, MODULE
    文件頁(yè)數(shù)： 2/33頁(yè)
    文件大?。?/td> 438K
    代理商： LS1601-7ERD1
    S Series Data Sheet
    100 Watt AC-DC and DC-DC Converters
    APR 26, 2006 revised to SEP 25, 2006
    Page 10 of 33
    www.power-one.com
    Thermal Considerations
    If a converter is located in free, quasi-stationary air (convection
    cooling) at the indicated maximum ambient temperature 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 components and surfaces. TA max is therefore,
    contrary to TC max, an indicative value only.
    Caution: The installer must ensure that under all operating
    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 TC max is not exceeded.
    For -7 or -9 models at ambient temperature TA = 85 °C with only
    convection cooling, and the maximum permissible current for each
    output is approx. 40% of its nominal value as per the figure below.
    Output Protection
    Each output is protected against overvoltages which could occur
    due to a failure of the internal control circuit. Voltage suppressor
    diodes (which under worst case condition may become a short
    circuit) provide the required protection. The suppressor diodes are
    not designed to withstand externally applied overvoltages.
    Overload at any of the outputs will cause a shut-down of all
    outputs. A red LED indicates the overload condition.
    Parallel or Series Connection
    Single or double-output models with equal nominal output voltage
    can be connected in parallel without any precautions using
    Option T (current sharing).
    Single output models and/or main and second outputs of double-
    output models can be connected in series with any other (similar)
    output.
    Notes:
    – Parallel connection of double output models should include both,
    main and second output to maintain good regulation of both
    outputs.
    – Not more than 5 models should be connected in parallel.
    – Series connection of second outputs without involving their main
    outputs should be avoided as regulation may be poor.
    – Rated output voltages above 36 V need additional measures in
    order to comply with the safety requirements for SELV (Safe Extra
    Low Voltage)
    – The maximum output current is limited by the output with the lowest
    current limitation if several outputs are connected in series.
    0
    0.1
    0.2
    0.3
    0.4
    0.5
    0.6
    0.7
    0.8
    50
    60
    70
    80
    90
    100
    Io/Io nom
    TA [C]
    0.9
    1.0
    Forced cooling
    05089_052305
    TA min
    TC max
    Convection cooling
    Fig. 7
    Output current derating versus temperature for -7 and -9
    models.
    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 when the temperature
    drops below this limit.
    Continuous operation under simultaneous worst-case conditions
    of the following three parameters should be avoided: minimum
    input
    voltage,
    maximum
    output
    power,
    and
    maximum
    temperature.
    Output Voltage Regulation
    Fig. 8
    Output characteristic Vo1 vs. Io1 (typ.)
    Vo
    Vo nom
    0.98
    0.5
    0
    0.5
    1.0
    Io1
    IoL
    Io
    Io nom
    05098_050605
    The following figures apply to single-output or double-output
    models with parallel-connected outputs.
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