LTC2978
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LTC2978

Octal Digital Power Supply Manager with EEPROM

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Part Details
Features
  • I2C/SMBus Serial Interface
  • PMBus Compliant Command Set
  • Configuration EEPROM with CRC
  • Black Box Fault Logging to Internal EEPROM
  • Differential Input, 16-Bit ΔΣ ADC with Less Than ±0.25% of Total Unadjusted Error
  • Eight Voltage Servos Precisely Adjust Output Voltages Using Eight 10-Bit DACs with Soft-Connect
  • Monitors Eight Output Voltages and One Input Voltage and Internal Die Temperature
  • 8-Channel Sequencer
  • Programmable Watchdog Timer
  • Eight UV/OV VOUT and One VIN Supervisor
  • Supports Multi-Channel Fault Management
  • Operates Autonomously without Additional Software
  • LTC2978 Can Be Powered from 3.3V or 4.5V to 15V
  • Available in 64-pin 9mm × 9mm QFN package
  • LTpowerPlay Configuration and Development Tool
Additional Details
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The LTC2978 is an octal, digital power-supply monitor, supervisor, sequencer, and margin controller. Eight output channels can be managed per user defined configuration settings. Supervisory functions include fault OV/UV threshold limits for eight output channels and one input channel. Programmable fault dependencies and responses allow the power supplies to be disabled with optional retry after a fault has been detected. Serial bus telemetry allows eight output voltages, one input voltage, die temperature and fault status to be monitored. In addition, odd numbered channels can be configured to measure the voltage across a current sense resistor. Power supply sequencing, precision point-of-load voltage adjustment and margining are supported with PMBus commands. A programmable watchdog timer monitors microprocessor activity for a stalled condition and resets the microprocessor if necessary. The 1-wire synchronization bus supports power supply sequencing across multiple LTC digital power devices. User programmable parameters can be stored in EEPROM. Faults and telemetry data can be logged to EEPROM for diagnostic analysis.

Applications

  • Computers
  • Network Servers
  • Industrial Test and Measurement
  • High Reliability Systems
  • Medical Imaging
  • Video

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Documentation

Documentation

Video

Software & Part Ecosystem

Software & Part Ecosystem

Evaluation Kit

Evaluation Kits 1

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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.

Tools & Simulations

Tools & Simulations 1

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 2

DK-SI-5SGXEA7N Kit

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altera-transceiver-signal-integrity-kit-stratix-v-gx-edition

altera-transceiver-signal-integrity-kit-stratix-v-gx-edition

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
DK-SI-5SGTMC7N Signal Integrity Kit

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Altera Transceiver Signal Integrity Development Kit, Stratix V GT Edition

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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