Overview
Features and Benefits
- Sequence, Trim, Margin and Supervise 16 Power Supplies
- Manage Faults, Monitor Telemetry and Create Fault Logs
- PMBus Compliant Command Set
- Supported by LTpowerPlay® GUI
- Margin or Trim Supplies to within 0.5% 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 16 Output Voltages, Two Input Voltages and Internal Die Temperature
- I2C/SMBus Serial Interface
- Powered from 3.13V to 3.47V
- Programmable Watchdog Timer
- Available in 144-Pin 12mm × 12mm BGA Package
- LTpowerPlay® Configuration and Development Tool
Product Details
The LTC2979 is a 16-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 sixteen power supply output channels and two 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 sixteen output voltages, two 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
Markets and Technologies
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.
Documentation & Resources
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R544 Reliability Data3/26/2018
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Current Sensing with PMBus Digital Power System Managers—Part 21/1/2022 Analog Dialogue
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Current Sensing with PMBus Digital Power System Managers—Part 112/1/2021 Analog Dialogue
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 |
|---|---|---|---|---|
| LTC2979CY#PBF | Material Declaration | Reliability Data | 144-Lead BGA (12mm x 12mm x 1.29mm) | |
| LTC2979IY#PBF | Material Declaration | Reliability Data | 144-Lead BGA (12mm x 12mm x 1.29mm) | |
| Wafer Fabrication Data | R544 Reliability Data |
PCN-PDN Information
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Support & Discussions
LTC2979 Discussions
Sample & Buy
Ordering FAQs
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Buy Now Pricing
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List Pricing
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Lead Times
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Sampling
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