LTC2977

RECOMMENDED FOR NEW DESIGNS

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

Data Sheet (Rev. G) Product Selection Table
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Overview

  • 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

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
LTC2977
8-Channel PMBus Power System Manager Featuring Accurate Output Voltage Measurement
LTC2977 Application Circuit LTC2977 Pin Configuration LTC2977 Performance Graph
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Documentation

Data Sheet 1

Reliability Data 1

User Guide 4

Application Note 7

Design Note 2

Technical Articles 7

Informational 1

Product Information 2

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Software Resources

Device Drivers 1

Hardware Ecosystem

Parts Product Life Cycle Description
Power System Management (PSM) & Sequencers 1
LTC2937
RECOMMENDED FOR NEW DESIGNS Programmable Six Channel Sequencer and Voltage Supervisor with EEPROM
Supervisory Circuits & Reset ICs 1
LTC2933
PRODUCTION Programmable Hex Voltage Supervisor with EEPROM
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Tools & Simulations

Linduino 3

Evaluation Kits

eval board
schematic 1
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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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Product Details

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

eval board
schematic 3
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schematic 6
schematic 7
DC2028A

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

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Product Details

DC2028A: Demo Board for the LTC2977 8-Channel PMBus Power System Manager Featuring Accurate Output Voltage Measurement.


 


eval board
schematic 8
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schematic 10
schematic 11
schematic 12
schematic 13
DC1540B

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

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Product Details

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.

eval board
schematic 14
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DC1508B-A

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

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Product Details

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.

eval board
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DC1962C-KIT

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

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Product Details

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


 


ADXBAND16EBZ

Evaluating the ADXBAND16EBZ Prototyping Platform

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Features and Benefits

  • Transmit and Receive Frequency X-Band: 8 – 12 GHz
  • Multi-channel, wideband system development platform for the AD9084: www.analog.com/en/products/AD9084.html
  • Mates with Xilinx VCU118 Evaluation Board (Not Included)
  • 16x RF Receive (Rx) Channels (32x Digital Rx Channels)
  • Total 16x 4GSPS to 20GSPS ADC channels
  • 48x Digital Down Converters (DDCs) & Complex Numerically-Controlled Oscillators (NCOs)
  • 16x Programmable Finite Impulse Response Filters (pFIRs)
  • Complete power management solution for all domains
  • Single 12V supply voltage for easy power management
  • Board Size: 114 mm x 114 mm (X” x Y”)

Product Details

The ADXBAND16EBZ contains four AD9084 software defined Direct Sampling MxFE, including RF front-end, clocking, and power circuitry. Common target applications are phased array radars, electronic warfare, and ground-based SATCOM, specifically a 16 Tx/16 Rx direct X-Band sampling phased array at L/S/C/X-Band.

The ADXBAND16EBZ highlights a complete system solution. It is intended as a testbed for demonstrating multi-chip synchronization as well as the implementation of system level calibrations, beamforming algorithms, and other signal processing algorithms. The system is designed to mate with a VCU118 Evaluation Board from Xilinx®, which features the Virtex® UltraScale+™ XCVU9P FPGA, with provided reference software, HDL code, and MATLAB system-level interfacing.

A 16Tx/16Rx Calibration board can be used to develop system-level calibration algorithms to demonstrate power-up phase determinism. The Calibration Board demonstrates combined-channel dynamic range, spurious, and phase noise improvements that can also be controlled via MATLAB add-on when connected to the PMOD interface of the VCU118.

For information regarding ADXBAND16EBZ, contact ian.beavers@analog.com

The system can be used to enable quick time-to-market development programs for applications like:

  • ADEF (Phased-Array, RADAR, EW, SATCOM)
  • Communications Infrastructure (Multiband & mmWave 5G)
  • Electronic Test and Measurement
DC1962C
Power System Management Demo Board (PowerStick) | 14-Supply Management with LTC2977, LTC2974 and LTC3880 [Requires DC1613]
DC1962C - Schematic DC1962 Demoboard
DC2028A
LTC2977 Demo Board: Octal Power Supply Manager [Requires DC1613]
DC2028A Demo Board DC2028A Demo Board DC2028A Demo Board DC2028A Demo Board DC2028A - Schematic
DC1540B
LTC2977 Demo Board Set: Eight µModule Power Supply Management (Includes DC1360B + DC1361B) (Requires DC1613)
DC1540B Demo Board DC1540B Demo Board DC1540B Demo Board DC1540B Demo Board DC1540B Demo Board DC1540B - Schematic
DC1508B-A
LTC2977, LTC2978A, LTC2978 Socketed Programming Board (Requires DC1613)
DC1508B - Schematic DC1508B - Demo Board Image
DC1962C-KIT
Starter Kit for Power System Management [Includes DC1962C, DC1613A]
DC1962 Demoboard DC1962C - Schematic
ADXBAND16EBZ
Evaluating the ADXBAND16EBZ Prototyping Platform

Reference Designs

Arria 10 (Rev E3- Linear Technology) Dev Kit
Arria 10 (Rev E3- Linear Technology) Dev Kit
Arria 10 FPGA Development Kit (Power Tree Representative of Actual Components Used on Board)
Simplied Power Tree that directly steps down 12V to required I/O voltage
Arria 10 (Rev E3- Linear Technology) Dev Kit Block Diagram
Altera Arria 10 FPGA Development Kit Circuits from the lab

View Detailed Reference Design

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
Xilinx VU37P Board
Xilinx VU37P Board
HTG-937 Block Diagram
HTG-937 Actual Power Tree Picture
HTG-937: Xilinx Virtex UltraScale+ ™ VU37P/VU47P HBM Development Board Circuits from the lab

View Detailed Reference Design

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.

Arria 10 SoC - Top View
Arria 10 SoC - Top View
Arria 10 SoC - Bottom View
Arria 10 Soc Dev Kit Block Diagram
Arria 10 SoC Power Tree
Altera Arria 10 SoC Development Kit Circuits from the lab

View Detailed Reference Design

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
Altera Arria 10 FPGA Development Kit
Arria 10 (Rev E3- Linear Technology) Dev Kit
Arria 10 FPGA Development Kit (Power Tree Representative of Actual Components Used on Board)
Simplied Power Tree that directly steps down 12V to required I/O voltage
Arria 10 (Rev E3- Linear Technology) Dev Kit Block Diagram
HTG-937: Xilinx Virtex UltraScale+ ™ VU37P/VU47P HBM Development Board
Xilinx VU37P Board
HTG-937 Block Diagram
HTG-937 Actual Power Tree Picture
Altera Arria 10 SoC Development Kit
Arria 10 SoC - Top View
Arria 10 SoC - Bottom View
Arria 10 Soc Dev Kit Block Diagram
Arria 10 SoC Power Tree

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