參數(shù)資料
    型號: TXS80ZD-3V
    廠商: POWER-ONE INC
    元件分類: 電源模塊
    英文描述: 1-OUTPUT 200 W DC-DC REG PWR SUPPLY MODULE
    封裝: 2.400 X 3.450 INCH, 0.500 INCH HEIGHT, 3/4 BRICK PACKAGE-14
    文件頁數(shù): 10/27頁
    文件大?。?/td> 2635K
    代理商: TXS80ZD-3V
    Product Specification
    TXS Series: 75…120 A DC-DC Converters
    36 to 75 V DC Input, 1.2, 1.5, 1.8, 2.0 and 2.5 V Output, 90 W to 250 W
    REV. FEB 18, 2003
    18 of 27
    www.power-one.com
    Safety Considerations
    TXS modules have been designed for building into
    system
    applications
    in
    pollution
    degree
    2
    environments
    1.
    The converters provide basic insulation
    1 from
    input to output and from input to the metallic base
    plate. The insulation supports 1500 V DC electric
    strength test voltage and has an insulation
    resistance >50 M
    .
    The converters provide functional insulation
    1
    between output and base plate. The insulation
    supports 500 V DC electric strength test voltage.
    The base plate is normally floating. For safety
    reasons the base plate may only be connected to
    the secondary or safety ground.
    If the system using the converter requires safety
    agency approval, certain rules should be followed
    in the design of the system. In particular, all
    creepage and clearance distance requirements of
    the appropriate standard should be observed. This
    document refers to UL 60950, EN 60950:2000 and
    CSA 60950-00 only. Specific applications may
    have additional requirements.
    The converter has no internal fuse. An external
    fuse should be provided to protect the system. For
    UL purpose the fuse needs to be UL-listed. A fuse
    rating not greater than 10 A is recommended. The
    user can select a lower rating fuse based upon the
    inrush transient of the input filter and the maximum
    input current of the converter (see page 2). Both
    input tracks and the chassis ground track (if
    applicable) should be capable of conducting a
    current of 1.5 times the value of the fuse without
    failure. The fuse should be placed in the non-
    grounded input line.
    The maximum specified input voltage is 100 V
    DC for 100 ms. Exceeding of this voltage limit may
    destroy the input stage of the converter but it will
    not damage the insulation
    2.
    If an input supply other than SELV is used, the
    components on the primary of the converter may
    need to be considered as hazardous. The report:
    “TXS layout considerations” on the TXS CD ROM
    provides recommendations for the PCB layout
    beneath the converter.
    1 According to UL 60950, EN 60950:2000, CSA 60950-00
    2 The creepage and clearance distance and the insulation
    thickness were dimensioned for 200 V DC. The
    converters have been approved for basic insulation. It is
    in the responsibility of the customer to use the converter
    in applications, where supplementary insulation is
    required.
    Definitions
    The following section should help to classify the
    supplying circuit of the converter. For the precise
    identification of the voltage types in a system, the
    relevant safety standard should be used.
    Primary circuit = Circuit connected to the AC mains
    which makes it hazardous per definition.
    Secondary circuit = Circuit which is isolated from a
    primary circuit. A battery without connection to a
    primary circuit is considered to be a secondary
    circuit.
    SELV, ELV and TNV are secondary circuits.
    SELV = User accessible secondary circuit with
    U <60 V DC and no transients. An SELV circuit
    remains safe even after single faults.
    ELV = Basic insulated circuit with the same limits
    as a SELV circuit but without protection to 60 V in
    case of a single fault.
    TNV = Double or reinforced insulated secondary
    circuit, isolated from earth and connected to a
    telecommunication network or a circuit meeting the
    TNV specifications.
    Table 8: Normal condition:
    With
    Transients
    1
    Without Transients
    TNV-1
    ELV
    SELV
    <60 V DC or 42.4 V AC peak
    TNV-3
    TNV-2
    <120 V DC or 70.7 V AC peak
    2
    Table 9: Maximum voltage after a single fault:
    With
    Transients
    1
    Without Transients
    TNV-1
    ELV
    SELV
    <120 V continuous
    3
    Possibly
    hazardous
    <60 V, 120 V
    for 0.2 s max
    TNV-3
    TNV-2
    <120 V continuous
    3
    1 Up to 1.5 kV transients possible.
    2 For DC voltages with overlaid AC voltages the limit:
    UAC/70.7 V + UDC/120 V < 1 applies.
    Exception: According deviation 2 in UL60950, the limit
    80 V DC instead of 120 V DC applies in a DC-power
    system for TNV2.
    3 In the event of a single fault, the voltage can
    rise to 1500 V for 1 ms, then fall down to 400 V within
    14 ms and stay at 400 V DC over 185 ms. Limiting
    curve, see figure in IEC 60950:2000.
    SELV:
    Safety Extra Low Voltage
    ELV:
    Extra Low Voltage
    TNV:
    Telecommunication Network Voltage
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