LTC2980-24

24-Channel PMBus Power System Manager

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Recommended for New Designs

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Overview

Features and Benefits
Product Details

Features and Benefits

Sequence, Trim, Margin and Supervise 24 Power Supplies
Manage Faults, Monitor Telemetry and Create Fault Logs
PMBus Compliant Command Set
Supported by LTpowerPlay^® GUI
Margin or Trim Supplies to within 0.15% of Target
Fast OV/UV Supervisors Per Channel
Coordinate Sequencing and Fault Management Across Multiple ADI PSM Devices
Automatic Fault Logging to Internal EEPROM

Operate Autonomously without Additional Software
Internal Temperature and Input Voltage Supervisors
Accurate Monitoring of 24 Output Voltages, Three Input Voltages and Internal Die Temperature
I²C/SMBus Serial Interface
Can Be Powered from 3.3V, or 4.5V to 15V
Programmable Watchdog Timer
Available in 210-Lead 8.1mm × 16.9mm BGA Package

Product Details

The LTC2980-24 is a 24-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 24 power supply output channels and three power supply input channels, 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 24 output voltages, three input voltages, 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 ADI 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

Product Categories

Power Monitor, Control, and Protection
- Digital Power System Managers

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Product Lifecycle Recommended for New Designs

This product has been released to the market. The data sheet contains all final specifications and operating conditions. For new designs, ADI recommends utilization of these products.

Evaluation Kits (1)

DC3097A-KIT

LTC2980-24 | 24-Channel Power Supply System Featuring the LTC2980-24 Power System Manager

DC3097A-KIT

View Detailed Evaluation Kit Information

The DC3097A-KIT is a demonstration system for the LTC2980-24 for the 24-channel I2C/SMBus/PMBus Power System Manager (PSM) with EEPROM. It consists of 4 circuit boards, namely one DC3094A board and three DC1361B boards. The LTC2980-24 monitors and controls 24 power supply rails which are provided by three DC1361B power supply boards that plug into the DC3094A. The system demonstrates the ability of the LTC2980-24 to sequence, trim, margin, supervise, monitor, and log faults for the twenty-four power supplies. Together these four boards form a sophisticated, 24-channel, digitally programmable and digitally managed power supply system.

The board set contains twenty-four independent power supply rails, by having the three DC1361B boards. All 24 rails are based on LTM4603 DC/DC μModule^® switching regulators. The DC1361B board is pre-configured with output voltages ranging from 0.8V to 3.3V. The power supply channels may be reconfigured to different output voltages by changing the feedback resistors. The LTC2980-24 can be configured to monitor current on odd numbered channels. The DC1361B board has been designed to allow the user to enable this feature on Channel 7. In this configuration, Channel 7 measures the current on Channel 6’s 1V output.

The LTpowerPlay^® graphical user interface (GUI) supports this demonstration system and enables complete control of all the features of the LTC2980-24. Together, the LTpowerPlay software and DC3094A hardware system create a powerful development environment for designing and testing configuration settings of the LTC2980-24. LTpowerPlay stores these settings in the LTC2980-24 internal EEPROM or in a project file. The software displays all the configuration settings and real time measurements from the Power System Management IC. Telemetry allows easy access and decoding of the fault log created by the LTC2980-24. The board comes pre-programmed with the EEPROM values appropriate for the twenty-four power supply rails. Just plug and play!

Order preprogrammed devices from Analog Devices Express (ADX) using LTpowerPlay:
www.analog.com/programming

The DC3097A-KIT demo boards can be powered by an external power supply, such as a +12VDC supply. Communication with the software is provided through the DC1613 USB-to-I²C/SMBus/PMBus Controller. The following items are required:

+12VDC Power Supply
USB-to-I²C/SMBus/PMBus Controller (DC1613)
LTpowerPlay Software

Resources

Documentation & Resources

Data Sheets

LTC2980-24: 24-Channel PMBus Power System Manager Data Sheet (Rev. A)
1/7/2022
PDF

User Guides

DC3097A-KIT - Demo Manual (Rev. 0)
1/19/2022
PDF

Design Resources

ADI has always placed the highest emphasis on delivering products that meet the maximum levels of quality and reliability. We achieve this by incorporating quality and reliability checks in every scope of product and process design, and in the manufacturing process as well. "Zero defects" for shipped products is always our goal.View our quality and reliability program and certifications for more information.

Part Number	Material Declaration	Reliability Data	Pin/Package Drawing	CAD Symbols, Footprints & 3D Models
LTC2980AY-24#PBF	Material Declaration	Reliability Data	210-Lead BGA (16.9mm × 8.1mm × 1.52mm)	Ultra Librarian SamacSys
Wafer Fabrication Data

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Evaluation Boards

Pricing displayed is based on 1-piece.

Up to two boards can be purchased through Analog.com. To order more than two, please purchase through one of our listed distributors.

Pricing displayed is based on 1-piece. The USA list pricing shown is for budgetary use only, shown in United States dollars (FOB USA per unit), and is subject to change. International prices may vary due to local duties, taxes, fees and exchange rates.