LTC2975

RECOMMENDED FOR NEW DESIGNS

4-Channel PMBus Power System Manager Featuring Accurate Input Current and Energy Measurement

Data Sheet (Rev. D) Product Selection Table
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Overview

  • Sequence, Trim, Margin and Supervise Four 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
  • Monitor Input Current (±1%) and Accumulate Energy
  • Fast OV/UV and OC Supervisors Per Channel
  • Coordinate Sequencing and Fault Management Across Multiple LTC PSM Devices
  • Automatic Fault Logging to Internal EEPROM
  • Operate Autonomously Without Additional Software
  • External Temperature and Input Voltage Supervisors
  • Accurate Monitoring of Four Output Voltages, Four Output Currents, Four External Temperatures, Input Voltage and Current, and Internal Die Temperature
  • Can Be Powered from 3.3V, or 4.5V to 15V
  • Pin-Compatible to the LTC2974
  • Available in 64-Lead 9mm × 9mm QFN Package and in 63-Lead 6.25mm × 7.5mm BGA Package
  • AEC-Q100 Qualified for Automotive Applications
LTC2975
4-Channel PMBus Power System Manager Featuring Accurate Input Current and Energy Measurement
LTC2975 Application Circuit LTC2975 Pin Configuration LTC2975 Pin Configuration LTC2975 Performance Graph
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Documentation

Data Sheet 1

User Guide 5

Application Note 6

Design Note 1

Technical Articles 3

Informational 1

Product Information 1

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Software Resources

Device Drivers 1

Hardware Ecosystem

Parts Product Life Cycle Description
Power System Management (PSM) & Sequencers 2
LTC2974
RECOMMENDED FOR NEW DESIGNS 4-Channel PMBus Power System Manager Featuring Accurate Output Current Measurement
LTC2977
RECOMMENDED FOR NEW DESIGNS 8-Channel PMBus Power System Manager Featuring Accurate Output Voltage Measurement
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Tools & Simulations

Linduino 4

Evaluation Kits

eval board
schematic 1
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DC2518A

LTC2975 Demo Board: ±12V, ±48V Power Supply Management [requires DC1613]

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Product Details

The DC2518A is a demonstration system for the LTC2975 Power System Manager that interfaces to various regulators. The board contains all the circuitry needed to use the LTC2975 in a power system and control four power supplies. The four power supplies include linear and switching regulators for the purpose of demonstrating a variety of methods to sense voltage and current. The demo board provides a sophisticated, digitally programmable 4-channel power supply system.

eval board
schematic 3
schematic 4
DC2518A

LTC2975 Demo Board: ±12V, ±48V Power Supply Management [requires DC1613]

Buy Now View Details

Product Details

The DC2518A is a demonstration system for the LTC2975 Power System Manager that interfaces to various regulators. The board contains all the circuitry needed to use the LTC2975 in a power system and control four power supplies. The four power supplies include linear and switching regulators for the purpose of demonstrating a variety of methods to sense voltage and current. The demo board provides a sophisticated, digitally programmable 4-channel power supply system.

eval board
schematic 5
schematic 6
schematic 7
schematic 8
DC2428A

LTC2975 Demo Board Set | LTM4644-1 Quad 4A Power Supply Management (includes DC2382A + DC2363A) [requires DC1613]

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Product Details

The DC2428A is a two-board demonstration system for the LTC2975 Power System Manager and LTM4644-1 quad 4A μModule regulator. The DC2382A contains all the circuitry needed to use the LTC2975 in a power system and control four power supplies. The DC2363A contains four power supplies (LTM4644-1) that the LTC2975 configures and controls. The DC2363A and DC2382A demo boards together provide a sophisticated 4-channel digitally programmable power supply system.

eval board
schematic 9
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schematic 12
DC2428A

LTC2975 Demo Board Set | LTM4644-1 Quad 4A Power Supply Management (includes DC2382A + DC2363A) [requires DC1613]

Buy Now View Details

Product Details

The DC2428A is a two-board demonstration system for the LTC2975 Power System Manager and LTM4644-1 quad 4A μModule regulator. The DC2382A contains all the circuitry needed to use the LTC2975 in a power system and control four power supplies. The DC2363A contains four power supplies (LTM4644-1) that the LTC2975 configures and controls. The DC2363A and DC2382A demo boards together provide a sophisticated 4-channel digitally programmable power supply system.

eval board
schematic 13
schematic 14
DC1508B-B

LTC2974, LTC2975 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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DC1508B-B

LTC2974, LTC2975 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
schematic 17
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DC2022A

LTC2975 Demo Board: 4 Power Supply Manager with Input Energy Monitoring [Requires DC1613]

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Product Details

The DC2022A is a demonstration system that showcases the LTC2975, a 4-channel I2C/SMBus/PMBus power system manager with EEPROM. The LTC2975 monitors and controls four power supply rails. The LTC2975 also monitors input current and input voltage, which are used to calculate input power and accumulate energy. The DC2022A demonstrates the ability of the LTC2975 to sequence, trim, margin, supervise, monitor, and log faults for four power supplies. Each power supply channel’s output voltage is monitored and the LTC2975 monitors its own internal die temperature.

eval board
schematic 19
schematic 20
DC2022A

LTC2975 Demo Board: 4 Power Supply Manager with Input Energy Monitoring [Requires DC1613]

Buy Now View Details

Product Details

The DC2022A is a demonstration system that showcases the LTC2975, a 4-channel I2C/SMBus/PMBus power system manager with EEPROM. The LTC2975 monitors and controls four power supply rails. The LTC2975 also monitors input current and input voltage, which are used to calculate input power and accumulate energy. The DC2022A demonstrates the ability of the LTC2975 to sequence, trim, margin, supervise, monitor, and log faults for four power supplies. Each power supply channel’s output voltage is monitored and the LTC2975 monitors its own internal die temperature.

eval board
schematic 21
DC2578A

Total Power Management: Hot Swap, Intermediate Bus Voltage, Point-of-Load (Featuring LTC4281, LTC3886, LTC3887, LTC2975) [Requires DC1613]

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Product Details

The DC2578A is a complete power chain, including a hot swap controller, an intermediate bus controller, and six point-of-load channels with power system management. The board demonstrates how to safely transfer power from a backplane, through an LTC4281 hot swap controller, through an LTC3886 step-down intermediate bus controller (IBC), and out through the point-of-load converters (POLs) that regulate load voltages. It shows the comprehensive set of power management, cooperation, and safety features of the Analog Devices solution, and showcases how easy it is to configure and manage the whole power hierarchy. Each regulated supply has the ability to sequence, trim, margin, supervise, measure, respond cooperatively to faults, and log fault information in nonvolatile memory. In addition, the onboard load pulser helps with optimizing the adjustable LTC3886 control loop response. The rich set of status and telemetry information provided by the entire system is consolidated and presented under one GUI interface — LTpowerPlay.

eval board
schematic 22
DC2578A

Total Power Management: Hot Swap, Intermediate Bus Voltage, Point-of-Load (Featuring LTC4281, LTC3886, LTC3887, LTC2975) [Requires DC1613]

Buy Now View Details

Product Details

The DC2578A is a complete power chain, including a hot swap controller, an intermediate bus controller, and six point-of-load channels with power system management. The board demonstrates how to safely transfer power from a backplane, through an LTC4281 hot swap controller, through an LTC3886 step-down intermediate bus controller (IBC), and out through the point-of-load converters (POLs) that regulate load voltages. It shows the comprehensive set of power management, cooperation, and safety features of the Analog Devices solution, and showcases how easy it is to configure and manage the whole power hierarchy. Each regulated supply has the ability to sequence, trim, margin, supervise, measure, respond cooperatively to faults, and log fault information in nonvolatile memory. In addition, the onboard load pulser helps with optimizing the adjustable LTC3886 control loop response. The rich set of status and telemetry information provided by the entire system is consolidated and presented under one GUI interface — LTpowerPlay.
DC2518A
LTC2975 Demo Board: ±12V, ±48V Power Supply Management [requires DC1613]
DC2518A - Schematic Figure 3. Connecting DC2518A and the DC1613 USB to IZC/SMBus/PMBus Controller
DC2518A
LTC2975 Demo Board: ±12V, ±48V Power Supply Management [requires DC1613]
DC2518A - Schematic Figure 3. Connecting DC2518A and the DC1613 USB to IZC/SMBus/PMBus Controller
DC2428A
LTC2975 Demo Board Set | LTM4644-1 Quad 4A Power Supply Management (includes DC2382A + DC2363A) [requires DC1613]
DC2428A Evaluation Board DC2428A Evaluation Board - Top View DC2428A Evaluation Board - Bottom View DC2428A - Demo Board Image
DC2428A
LTC2975 Demo Board Set | LTM4644-1 Quad 4A Power Supply Management (includes DC2382A + DC2363A) [requires DC1613]
DC2428A Evaluation Board DC2428A Evaluation Board - Top View DC2428A Evaluation Board - Bottom View DC2428A - Demo Board Image
DC1508B-B
LTC2974, LTC2975 Socketed Programming Board (Requires DC1613)
DC1508B - Schematic DC1508B - Demo Board Image
DC1508B-B
LTC2974, LTC2975 Socketed Programming Board (Requires DC1613)
DC1508B - Schematic DC1508B - Demo Board Image
DC2022A
LTC2975 Demo Board: 4 Power Supply Manager with Input Energy Monitoring [Requires DC1613]
DC2022A - Schematic Figure 2. Connecting DC2lJ22A Board and the DC1613 I20/SMBus/PMBus Controller
DC2022A
LTC2975 Demo Board: 4 Power Supply Manager with Input Energy Monitoring [Requires DC1613]
DC2022A - Schematic Figure 2. Connecting DC2lJ22A Board and the DC1613 I20/SMBus/PMBus Controller
DC2578A
Total Power Management: Hot Swap, Intermediate Bus Voltage, Point-of-Load (Featuring LTC4281, LTC3886, LTC3887, LTC2975) [Requires DC1613]
DC2578A
DC2578A
Total Power Management: Hot Swap, Intermediate Bus Voltage, Point-of-Load (Featuring LTC4281, LTC3886, LTC3887, LTC2975) [Requires DC1613]
DC2578A

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Clarify methods to read the output current
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