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Datasheet Linear Technology LT3573IMSE#TRPBF

ПроизводительLinear Technology
СерияLT3573
МодельLT3573IMSE#TRPBF

Isolated Flyback Converter without an Opto-Coupler

Datasheets

  • Скачать » Datasheet, PDF, 282 Кб, Версия: D, Файл закачен 31-07-2016
    LT3573 - Isolated Flyback Converter without an Opto-Coupler
    Выписка из документа ↓
    LT3573
    Isolated Flyback Converter
    without an Opto-Coupler
    FEATURES DESCRIPTION 3V to 40V Input Voltage Range
    1.25A, 60V Integrated NPN Power Switch
    Boundary Mode Operation
    No Transformer Third Winding or
    Opto-Isolator Required for Regulatio Improved Primary-Side Winding Feedback
    Load Regulatio V
    OUT Set with Two External Resistors
    n BIAS Pin for Internal Bias Supply and Power
    NPN Driver
    n Programmable Soft-Start
    n Programmable Power Switch Current Limit
    n Thermally Enhanced 16-Lead MSOP The LTВ®3573 is a monolithic switching regulator specifically designed for the isolated flyback topology. No third
    winding or opto-isolator is required for regulation. The
    part senses the isolated output voltage directly from the
    primary-side flyback waveform. A 1.25A, 60V NPN power
    switch is integrated along with all control logic into a
    16‑lead MSOP package. n n n n The LT3573 operates with input supply voltages from
    3V to 40V, and can deliver output power up to 7W with
    no external power devices.The LT3573 utilizes boundary
    mode operation to provide a small magnetic solution with ...

Цены

Корпус / Упаковка / Маркировка

КорпусMS-16E
Код корпусаMSE
Индекс корпуса05-08-1667

Параметры

Demo BoardsDC1228A
Design ToolsLTspice File
Экспортный контрольнет
Основные особенностиBoundary Mode Operation, No Opto Isolator
Тактовая частота1000 kHz
Integrated Inductorнет
Isupply3.5 мА
Monolithicда
Количество выходов1
Рабочий диапазон температурот -40 до 85 °C
Polyphaseнет
Switch Current1.55 A
Synchronousнет
TopologyFlyback
Vin Max40 В
Vin Min3 В

Экологический статус

RoHSСовместим

Design Notes

  • Скачать » Design Notes - DN509, PDF, 723 Кб, 24-10-2012
    Micropower Isolated Flyback Converter with Input Voltage Range from 6V to 100V
    Выписка из документа ↓
    Micropower Isolated Flyback Converter with Input Voltage
    Range from 6V to 100V
    Design Note 509
    Zhongming Ye
    Introduction
    Flyback converters are widely used in isolated DC/DC
    applications because of their relative simplicity and
    low cost compared to alternative isolated topologies. Even so, designing a traditional flyback is not
    easy—the transformer requires careful design, and
    loop compensation is complicated by the well known
    right-half plane (RHP) zero and the propagation delay
    of the opto-coupler.
    Linear Technology’s no-opto flyback converters, such
    as the LT В® 3573, LT3574, LT3575, LT3511 and LT3512,
    simplify the design of flyback converters by incorporating a primary-side sensing scheme and running the
    converter in boundary mode. The LT8300 high voltage
    monolithic isolated flyback converter further simplifies
    flyback design by integrating a 260mA, 150V DMOS
    power switch, an internal compensation network and a
    soft-start capacitor. The LT8300 operates with input supply voltages from 6V to 100V and delivers output power
    of up to 2W with as few as five external components.
    The LT8300 operates in boundary mode and offers low
    ripple Burst ModeВ® operation, enabling the design of ...
  • Скачать » Design Notes - DN525, PDF, 259 Кб, 10-02-2014
    Monolithic No-Opto Isolated Flyback Converter Provides Versatile Solution
    Выписка из документа ↓
    Monolithic No-Opto Isolated Flyback Converter Provides
    Versatile Solution
    Design Note 525
    George Qian
    Introduction
    Traditionally, isolated power supplies use an optocoupler in the feedback loop to transfer regulation
    information across the isolation barrier. Unfortunately,
    an opto-coupler’s gain characteristic varies widely over
    temperature and lifetime, increasing the difficulty of
    power supply loop compensation.
    Linear Technology’s line of no-opto flyback converters,
    such as the LTВ®3573, LT3574, LT3575, LT3511, LT3512
    and LT8300, simplify flyback design by incorporating
    a primary-side sensing scheme, thereby eliminating
    the need for an opto-isolator.
    The LT8302 monolithic no-opto flyback converter
    has an integrated 65V/3.6A DMOS power switch with
    internal loop compensation and soft-start. The LT8302
    can operate from an input voltage as low as 2.8V to
    42V, and deliver output power up to 18W. It offers
    low ripple Burst Mode В® operation at light loads, providing low standby power loss, and features a low
    component count.
    Performance and Ease of Use ...

Статьи

  • Скачать » Статьи - LT Journal, PDF, 206 Кб, 01-01-2009
    Primary-Side Sensing Takes Complexity out of Isolated Flyback Converter Design
    Выписка из документа ↓
    L DESIGN IDEAS Primary-Side Sensing Takes
    Complexity out of Isolated
    Flyback Converter Design
    Introduction
    Flyback converters are widely used
    in isolated DC/DC applications, but
    they are not necessarily a designer’s
    first choice. Power supply designers grudgingly choose a flyback out
    of necessity for electronic isolation;
    certainly not because they are an
    easy to design. A flyback converter
    requires that significant design time
    be devoted to transformer design, a
    task further complicated by limited
    off-the-shelf transformer selection and
    the necessity for customized magnetics. Moreover, the flyback converter
    has stability issues due to the wellknown right-half-plane (RHP) zero
    in the control loop, which is further
    complicated by the propagation delay
    of an optocoupler.
    The LT3573 isolated monolithic
    flyback converter solves many of the
    design difficulties commonly associDESIGN IDEAS ...

Модельный ряд

Серия: LT3573 (4)

Классификация производителя

  • Power Management > Switching Regulator > Flyback, Forward and Isolated Controllers

Варианты написания:

LT3573IMSETRPBF, LT3573IMSE TRPBF

На английском языке: Datasheet Linear Technology LT3573IMSE#TRPBF

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