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Datasheet Linear Technology LTC2975CUP#PBF

ПроизводительLinear Technology
СерияLTC2975
МодельLTC2975CUP#PBF

4-Channel PMBus Power System Manager Featuring Accurate Input Current and Energy Measurement

Datasheets

  • Скачать » Datasheet, PDF, 1.3 Мб, Файл закачен 31-07-2016
    LTC2975 - 4-Channel PMBus Power System Manager Featuring Accurate Input Current and Energy Measurement
    Выписка из документа ↓
    LTC2975
    4-Channel PMBus Power
    System Manager Featuring Accurate
    Input Current and Energy Measurement
    Description Features Sequence, Trim, Margin and Supervise Four Power
    Supplies
    nn Manage Faults, Monitor Telemetry and Create Fault Logs
    nn PMBusв„ў Compliant Command Set
    nn Supported by LTpowerPlayв„ў GUI
    nn Margin or Trim Supplies to Within 0.25% of Target
    nn Monitor Input Current (В±1%) and Accumulate Energy
    nn Fast OV/UV and OC Supervisors Per Channel
    nn Coordinate Sequencing and Fault Management
    Across Multiple LTC PSM Devices
    nn Automatic Fault Logging to Internal EEPROM
    nn Operate Autonomously Without Additional Software
    nn External Temperature and Input Voltage Supervisors
    nn Accurate Monitoring of Four Output Voltages, Four
    Output Currents, Four External Temperatures, Input
    Voltage and Current, and Internal Die Temperature
    nn I2C/SMBus Serial Interface
    nn Can Be Powered from 3.3V, or 4.5V to 15V
    nn Pin-Compatible to the LTC2974 ...

Цены

    ПоставщикПроизводительНаименованиеЦена
    ЭлитанLinear TechnologyLTC2975CUP1 362 руб.
    Подробнее об условиях поставки »

Корпус / Упаковка / Маркировка

Корпус9x9 QFN-64
Код корпусаUP
Индекс корпуса05-08-1705

Параметры

ADC16-Bit
Demo BoardsDC1508B-B,DC2022A,DC2428A,DC2518A,DC2578A
Design ToolsLTpowerPlay ,Linduino File
Экспортный контрольнет
Основные особенностиPMBus, EEPROM, Fault Logging, Supervisor, Sequencing, Margining, Input Energy Monitor, Internal Temp Monitor, Voltage Monitor, Current Monitor, Power Monitor, Cascadable
I/OPMBus/SMBus/I2C
Isupply10 мА
Number of Supplies4
Рабочий диапазон температурот 0 до 70 °C
Vin Range3.13V to 15V

Экологический статус

RoHSСовместим

Application Notes

  • Скачать » Application Notes - AN137, PDF, 540 Кб, 20-09-2012
    Accurate Temperature Sensing with an External P-N Junction
    Many Linear Technology devices use an external PNP transistor to sense temperature. Common examples are LTC3880, LTC3883 and LTC2974. Accurate temperature sensing depends on proper PNP selection, layout, and device configuration. This application note reviews the theory of temperature sensing and gives practical advice on implementation.
    Выписка из документа ↓
    Application Note 137
    May 2012
    Accurate Temperature Sensing with an External P-N
    Junction
    Michael Jones
    Introduction Temperature Sensing Theory Many Linear Technology devices use an external PNP
    transistor to sense temperature. Common examples are
    LTC3880, LTC3883 and LTC2974. Accurate temperature
    sensing depends on proper PNP selection, layout, and
    device configuration. This application note reviews the
    theory of temperature sensing and gives practical advice
    on implementation. Linear Technology devices use an external bipolar transistor p-n junction to measure temperature. The relationship
    between forward voltage, current, and temperature is: Why should you worry about implementing temperature
    sensing? Can’t you just put the sensor near your inductor
    and lay out your circuit any way you want? Unfortunately,
    poor routing can sacrifice temperature measurement
    performance and compensation. The purpose of this application note is to allow you the opportunity to get it right
    the first time, so you don’t have to change the layout after
    your board is fabricated.
    Why Use Temperature Sensing?
    Some Linear Technology devices measure internal and
    external temperature. Internal temperature is used to
    protect the device by shutting down operation or locking ...
  • Скачать » Application Notes - AN145, PDF, 3.0 Мб, 10-05-2014
    Overview of the EEPROM in LTC PSM Devices
    Выписка из документа ↓
    Application Note 145
    July 2015
    Overview of the EEPROM in LTC PSM Devices
    Nick Vergunst Introduction convenient List Of All Options Linear TechnologyВ® has a large family of devices that
    provide a great deal of power and configurability for all
    applications. These parts additionally provide onboard
    nonvolatile memory (NVM) in the form of EEPROM to
    store and recall configuration parameters and on some
    devices provide a fault log and user scratch pad. Option 1A. Manual programming with LTpowerPlayв„ў
    Built In Programming Utility (PC->NVM) These Power System Management(PSM) devices’ architectures allow them to power up and load the desired
    configuration parameters from this NVM autonomously
    with no I2C or firmware interaction required.
    A common question customers ask is, “Now that I have
    settled on a particular configuration, how do I program
    this configuration into the chip’s onboard nonvolatile
    memory (NVM).”
    Some available options are presented in rough order of
    increasing complexity throughout the document.
    NOTE: Linear Technology strongly recommends
    Option 1 for preproduction prototyping, and
    OptionВ 2, Option 3 or Option 4 for higher volume
    production. Option 5 is a convenient method to
    program a small quantity of loose ICs prior to board ...
  • Скачать » Application Notes - AN152, PDF, 169 Кб, 12-07-2016
    Power System Management Addressing
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    Application Note 152
    July 2016
    Power System Management Addressing
    Michael Jones Introduction
    The foundation of all PMBus applications, including LTCВ®
    Power System Management (PSM), is the ability for the
    PMBus master (system host) to communicate with all
    PMBus slaves (PSM controllers, PSM managers, PSM
    ВµModulesВ®, and PMBus monolithic devices) on the bus.
    Every slave on the bus must have a unique address that
    does not conflict with other devices.
    The bus master must also be able to communicate with
    PSM slaves in a few less than obvious situations: Address discovery Global actions Multiphase rails Invalid NVM Bus MUXes
    Device addressing is achieved with a combination of base
    registers plus external address select (ASEL) pins, as well
    as special global, rail, ARA, and other special addresses.
    This Application Note will present the fundamental design
    principles underlying the LTC PSM family, details on product
    family differences, as well practical examples and advice.
    Special cases, such as invalid NVM, will also be discussed.
    The benefit to you is a design that works on day one, and
    works even when things go wrong. For example, if you
    are writing to the NVM with LTpowerPlayв„ў, and power is ...
  • Скачать » Application Notes - AN153, PDF, 1.3 Мб, 24-02-2016
    Linduino for Power System Management
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    Application Note 153
    July 2016
    Linduino for Power System Management
    Michael Jones
    INTRODUCTION LTC3880, and the industry standards for I2C/SMBus/
    PMBus. Most Power System Management designs follow a set
    and forget model. Setup and debug of Power System
    Management (PSM) devices is simple with LTpowerPlayВ®
    and when combined with a bulk programing solution, there
    is no need for firmware. However, many large systems
    require a Board Management Controller (BMC), begging
    the question: “What can firmware do for PSM?” Linduino PSM hardware consists of a Linduino (DC2026),
    and a shield to connect (DC2294) the I2C pins of the
    Linduino to an PMBus/SMBus/I2C Bus of a demo board
    or product board. The foundation of PSM firmware is PMBus; the foundation
    of PMBus is SMBus; and the foundation of SMBus is I2C.
    Building a BMC that adds value with PSM firmware requires
    some level of knowledge of each protocol, or a pre-existing
    library that frees the programmer from the details. For optimal learning, start with a DC2026 (Linduino),
    DC2294 (Shield), DC1962 (Power Stick), and a Total
    Phase Beagle (I2C Sniffer). This allows programming,
    debugging, and learning of controllers (LTC388X) and
    managers (LTC297X). The LinduinoВ® libraries handle each protocol layer, and ...
  • Скачать » Application Notes - AN155, PDF, 230 Кб, 26-01-2017
    Fault Log Decoding with Linduino PSM
    Выписка из документа ↓
    Application Note 155
    January 2017
    Fault Log Decoding with Linduino PSM
    Michael Jones Introduction
    LTC power system management devices are PMBus controlled point-of-load converters (LTCВ®388X) and power
    system managers (LTC297X). All LTC power system management (PSM) devices have a fault log that is written
    to EEPROM when there is a fault. Once the fault log is
    written, fault logs are no longer generated until they are
    re-enabled, typically after the data has been read back.
    LTpowerPlayВ® helps debug a system by reading the fault
    log, decoding it into human-readable format, displaying it
    and saving it to a file. A system with a board management
    controller (BMC), can also read the fault log from EEPROM
    and re-enable it. Firmware can store, transfer over a
    network and decode fault data read from a PSM device.
    The LinduinoВ® Sketchbook contains an example sketch
    that reads fault logs, along with the supporting libraries
    for PMBus and fault log decoding.
    This application note describes the basics of reading and
    decoding fault logs using Linduino.
    Hardware
    The hardware used for this application note is:
    1. DC2026 (Linduino) ...
  • Скачать » Application Notes - AN166, PDF, 1.1 Мб, 10-04-2017
    In Flight Update with Linduino
    Выписка из документа ↓
    Application Note 166
    April 2017
    In Flight Update with Linduino
    Michael Jones
    INTRODUCTION TO INFLIGHT UPDATE INFLIGHT UPDATE PROCESS Inflight Update is a method of modifying the stored settings of LTC Power System Management (PSM) devices,
    including application of the new settings, to a live system1 . The general dataflow of Infight Update is a simple linear
    progression: Inflight Update is a two-stage process: EEPROM is modified
    first, and then EEPROM is copied to RAM. During stage
    one, a Board Management Controller sends new settings
    directly to the EEPROM via PMBus while the devices are
    operating normally, without impacting operation. During
    stage two, all devices switch to the new configuration via
    a reset or a power cycle2 .
    Decoupling “programming settings” from “application of
    settings” allows the EEPROM programming mechanism
    to stage, validate, and recover from programming failure
    without interruption of delivered power. This minimizes
    system downtime because all rails are power cycled only
    once per update.
    Inflight Update solves several technical and business
    problems. Fast product development increases the probability of field problems. For example, the supervisors
    might require more margin to reduce false positives.
    An FPGA image update might require small changes to ...

Модельный ряд

Серия: LTC2975 (4)

Классификация производителя

  • Monitor, Control and Protection > Power Monitors
  • Monitor, Control and Protection > Digital Power System Management > Digital Power System Managers

Варианты написания:

LTC2975CUPPBF, LTC2975CUP PBF

На английском языке: Datasheet Linear Technology LTC2975CUP#PBF

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