LTC2977
Info : RECOMMENDED FOR NEW DESIGNS
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LTC2977

8-Channel PMBus Power System Manager Featuring Accurate Output Voltage Measurement

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Info : RECOMMENDED FOR NEW DESIGNS tooltip
Info : RECOMMENDED FOR NEW DESIGNS tooltip
Part Details
Part Models 6
1ku List Price Starting From $13.01
Features
  • Sequence, Trim, Margin and Supervise Eight Power Supplies
  • Manage Faults, Monitor Telemetry and Create Fault Logs
  • PMBus Compliant Command Set
  • Supported by LTpowerPlay® GUI
  • Margin or Trim Supplies to Within 0.25% of Target
  • Fast OV/UV Supervisors Per Channel
  • Coordinate Sequencing and Fault Management Across Multiple LTC PSM Devices
  • Automatic Fault Logging to Internal EEPROM
  • Operate Autonomously without Additional Software
  • Internal Temperature and Input Voltage Supervisors
  • Accurate Monitoring of Eight Output Voltages, Input Voltage and Internal Die Temperature
  • I2C/SMBus Serial Interface
  • Can Be Powered from 3.3V, or 4.5V to 15V
  • Programmable Watchdog Timer
  • 100% Pin-Compatible Upgrade to the LTC2978/LTC2978A
  • Available in 64-Pin 9mm × 9mm QFN Package
  • AEC-Q100 Qualified for Automotive Applications
Additional Details
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The LTC2977 is an 8-channel Power System Manager used to sequence, trim (servo), margin, supervise, manage faults, provide telemetry and create fault logs. PMBus commands support power supply sequencing, precision point-of-load voltage adjustment and margining. DACs use a proprietary soft-connect algorithm to minimize supply disturbances. Supervisory functions include overvoltage and undervoltage threshold limits for eight power supply output channels and one power supply input channel, as well as over and under temperature limits. Programmable fault responses can disable the power supplies with optional retry after a fault is detected. Faults that disable a power supply can automatically trigger black box EEPROM storage of fault status and associated telemetry. An internal 16-bit ADC monitors eight output voltages, one input voltage, and die temperature. In addition, odd numbered channels can be configured to measure the voltage across a current sense resistor. A programmable watchdog timer monitors microprocessor activity for a stalled condition and resets the microprocessor if necessary. A single wire bus synchronizes power supplies across multiple LTC Power System Management (PSM) devices. Configuration EEPROM with ECC supports autonomous operation without additional software.

APPLICATIONS

  • Computers and Network Servers
  • Industrial Test and Measurement
  • High Reliability Systems
  • Medical Imaging
  • Video
Part Models 6
1ku List Price Starting From $13.01

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Documentation

Documentation

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Part Model Pin/Package Drawing Documentation CAD Symbols, Footprints, and 3D Models
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Product Lifecycle

PCN

May 2, 2022

- 22_0082

LTC2977 Datasheet Limit Change

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Jun 30, 2020

- 20_0244

Notification of Wafer Fab Location Change for 0.6µm CMOS Process Devices from ADI Milpitas (Hillview) to Vanguard Int. (Taiwan)

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Filter by Model

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Part Models

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PCN

May 2, 2022

- 22_0082

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LTC2977 Datasheet Limit Change

LTC2977CUP#PBF

PRODUCTION

LTC2977CUP#TRPBF

PRODUCTION

LTC2977IUP#PBF

PRODUCTION

LTC2977IUP#TRPBF

PRODUCTION

LTC2977IUP#WPBF

LTC2977IUP#WTRPBF

Jun 30, 2020

- 20_0244

arrow down

Notification of Wafer Fab Location Change for 0.6µm CMOS Process Devices from ADI Milpitas (Hillview) to Vanguard Int. (Taiwan)

LTC2977CUP#PBF

PRODUCTION

LTC2977CUP#TRPBF

PRODUCTION

LTC2977IUP#PBF

PRODUCTION

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Software & Part Ecosystem

Software & Part Ecosystem

Evaluation Kit

Evaluation Kits 5

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DC2028A

LTC2977 Demo Board: Octal Power Supply Manager [Requires DC1613]

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DC1508B-A

LTC2977, LTC2978A, LTC2978 Socketed Programming Board (Requires DC1613)

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DC1508B-A

LTC2977, LTC2978A, LTC2978 Socketed Programming Board (Requires DC1613)

LTC2977, LTC2978A, LTC2978 Socketed Programming Board (Requires DC1613)

Product Detail

The DC1508B programming board contains the circuitry needed to program and verify the EEPROM of the LTC2974, LTC2975, LTC2977, LTC2978, and LTC2978A. This is its sole purpose. The DC1508B is shipped with a clamshell style programming socket installed. The EEPROM contains the factory default configuration. The LTpowerPlay *.proj file that corresponds to the factory default can be found in the GUI.

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DC1540B

LTC2977 Demo Board Set: Eight µModule Power Supply Management (Includes DC1360B + DC1361B) (Requires DC1613)

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DC1540B

LTC2977 Demo Board Set: Eight µModule Power Supply Management (Includes DC1360B + DC1361B) (Requires DC1613)

LTC2977 Demo Board Set: Eight µModule Power Supply Management (Includes DC1360B + DC1361B) (Requires DC1613)

Product Detail

The DC1540B is a demonstration system for the LTC2977 8-channel I2C/SMBus/PMBus Power System Manager with EEPROM. It consists of 2 circuit boards namely the DC1360B and DC1361B. The DC1360B contains all the circuitry needed to insert the LTC2977 into a power system and control eight power supplies. The DC1361B contains eight power supplies (LTM4603EV) which are configured to be controlled by an LTC2977. Together these two boards form a sophisticated, 8-channel, digitally programmable power supply.

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DC1962C

Power System Management Demo Board (PowerStick) | 14-Supply Management with LTC2977, LTC2974 and LTC3880 [Requires DC1613]

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DC1962C

Power System Management Demo Board (PowerStick) | 14-Supply Management with LTC2977, LTC2974 and LTC3880 [Requires DC1613]

Power System Management Demo Board (PowerStick) | 14-Supply Management with LTC2977, LTC2974 and LTC3880 [Requires DC1613]

Product Detail

DC1962C Demo Board for:
LTC2974 4-Channel PMBus Power System Manager Featuring Accurate Output Current Measurement
LTC3880 Dual Output PolyPhase Step-Down DC/DC Controller with Digital Power System Management
LTC2977 8-Channel PMBus Power System Manager Featuring Accurate Output Voltage Measurement

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DC1962C-KIT

Starter Kit for Power System Management [Includes DC1962C, DC1613A]

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DC1962C-KIT

Starter Kit for Power System Management [Includes DC1962C, DC1613A]

Starter Kit for Power System Management [Includes DC1962C, DC1613A]

Product Detail

DC1962C-KIT Demo Board for:
LTC2977 8-Channel PMBus Power System Manager Featuring Accurate Output Voltage Measurement
LTC2974 4-Channel PMBus Power System Manager Featuring Accurate Output Current Measurement
LTC3880 Dual Output PolyPhase Step-Down DC/DC Controller with Digital Power System Management


 


Tools & Simulations

Tools & Simulations 2

Linduino

Linduino is Analog Devices’ Arduino compatible system for developing and distributing firmware libraries and example code for our integrated circuits. Each Linduino-supported product includes an example main program, defined in the LTSketchbook/Part Number folder and driver code, defined in the LTSketchbook/libraries folder.

Linduino code repository on GitHub and instructions on how to use the code.

Purchase Linduino

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Reference Designs

Reference Designs 3

Xilinx VU37P Board

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htg-937

Circuits from the lab

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Features and Benefits

The HTG-937 provides access to large FPGA gate density and 8GB/16GB of high bandwidth memory. It is populated with the Xilinx Zynq Virtex Ultrascale VU37P, or VU47P. Analog Devices power solution on this platform is fully validated to meet the requirements of Xilinx Zynq Virtex Ultrascale FPGAs to ensure a robust power delivery solution.

DC/DC μModule regulators are used on the HTG-937 to power Xilinx FPGA and/or SoC rails as well as other system rails. These regulators are highly integrated solutions with built in controller, power FETs, inductors, and capacitors that simplify layout and provide robust power delivery performance.

We provide supporting documentation including power schematics, layout, LTpowerPlanner and applicable LTpowerPlay configuration files to enable you to validate the power solution for your application seamlessly.

View Detailed Reference Design external link
Arria 10 (Rev E3- Linear Technology) Dev Kit

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altera-arria-10-fpga-development-kit

altera-arria-10-fpga-development-kit

Circuits from the lab

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Features and Benefits

  • Analog Devices has worked closely with FPGA and processor manufacturers to develop verified power solutions that optimize cost, size and efficiency in high performance applications
  • Our reference designs are supported by an intuitive design tool set and IP
  • Our team can provide designs for quick prototypes that can speed time to market in the most complex applications
View Detailed Reference Design external link
Arria 10 SoC - Top View

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altera-arria-10-soc-development-kit

altera-arria-10-soc-development-kit

Circuits from the lab

tooltip Info:Circuits from the lab

Features and Benefits

  • Analog Devices has worked closely with FPGA and processor manufacturers to develop verified power solutions that optimize cost, size and efficiency in high performance applications
  • Our reference designs are supported by an intuitive design tool set and IP
  • Our team can provide designs for quick prototypes that can speed time to market in the most complex applications
View Detailed Reference Design external link

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