LTM4700

Dual 50A or Single 100A µModule Regulator with Digital Power System Management

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Recommended for New Designs

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Overview

Features and Benefits
Product Details

Features and Benefits

Dual 50A or Single 100A Digitally Adjustable Outputs with Digital Interface for Control, Compensation and Monitoring
Wide Input Voltage: 4.5V to 16V
Output Voltage Range: 0.5V to 1.8V
~90% Full Load Efficiency from 12V_IN to 1V_OUT at 100A
±0.5% Maximum DC Output Error Over Temperature
±3% Current Readback Accuracy (25°C to 125°C)
Integrated Input Current Sense Amplifier
400kHz PMBus-Compliant I²C Serial Interface
Supports Telemetry Polling Rates Up to 125Hz
Integrated 16-Bit ∆Σ ADC
Constant Frequency Current Mode Control
Parallel and Current Share Multiple Modules
15mm × 22mm × 7.87mm BGA Package

Readable Data:

Input and Output Voltages, Currents, and Temperatures
Running Peak Values, Uptime, Faults and Warnings
Internal EEPROM and Fault Logging with ECC

Writable Data and Configurable Parameters:

Output Voltage, Voltage Sequencing and Margining
Digital Soft-Start/Stop Ramp
Optimize Analog Loop Compensation
OV/UV/OT, UVLO, Frequency and Phasing

Product Details

The LTM4700 is a dual 50A or single 100A step-down µModule^® (power module) DC/DC regulator featuring remote configurability and telemetry-monitoring of power management parameters over PMBus— an open standard I²C-based digital interface protocol. The LTM4700 is comprised of fast analog control loops, precision mixed signal circuitry, EEPROM, power MOSFETs, inductors and supporting components. The LTM4700 product video is available on website.

The LTM4700’s 2-wire serial interface allows outputs to be margined, tuned and ramped up and down at programmable slew rates with sequencing delay times. Input and output currents and voltages, output power, temperatures, uptime and peak values are readable. Custom configuration of the EEPROM contents is not required. At start-up, output voltages, switching frequency, and channel phase angle assignments can be set by pin-strapping resistors. The LTpowerPlay^® GUI and DC1613 USB-to-PMBus converter and demo kits are available.

The LTM4700 is offered in a 15mm × 22mm × 7.87mm BGA package available with SnPb or RoHS compliant terminal finish.

APPLICATIONS

System Optimization, Characterization and Data Mining in Prototype, Production and Field Environments
Telecom, Datacom, and Storage Systems

Product Categories

Power Management

Power Monitor, Control, and Protection
- µModule Regulators with Digital Power System Management

Markets and Technologies

Data Center

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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 (5)

DC2784A-B

OBSOLETE: LTM4700 High Current, PolyPhase Step-Down Power µModule Supply with Digital Power System Management 3×LTM4700, 300A

DC2784A-A

OBSOLETE: LTM4700 High Current, PolyPhase Step-Down Power µModule Supply with Digital Power System Management 2×LTM4700, 200A

DC2702A-B

OBSOLETE: LTM4700 Demo Board | Dual 50A or Single 100A μModule Regulator with Digital Power System Management

DC2702A-A

OBSOLETE: LTM4700EY Dual 50A or Single 100A µModule Regulator With Digital Power System Management

DC2784A-C

LTM4700 High Current, PolyPhase Step-Down Power µModule Supply with Digital Power System Management 4×LTM4700, 400A

DC2784A-B

View Detailed Evaluation Kit Information

This evaluation board is obsolete and no longer recommended. The replacement board is the DC2784B-B (coming soon).

Demonstration circuit 2784A-B is a high efficiency, high density, µModule regulator with 4.5V to 16V input range. The output voltage is adjustable from 0.5V to 1.8V and it can supply 300A maximum load current. The demo board has three LTM4700 µModule regulators, which is a dual 50A or single 100A step-down regulator with digital power system management. Please see LTM4700 data sheet for more detailed information.

DC2784A-B powers up to default settings and produces power based on configuration resistors without the need for any serial bus communication. This allows easy evaluation of the DC/DC converter. To fully explore the extensive power system management features of the part, download the GUI software LTpowerPlay^® onto your PC and use ADI’s I²C/SMBus/PMBus dongle DC1613A to connect to the board. LTpowerPlay allows the user to reconfigure the part on the fly and store the configuration in EEPROM, view telemetry of voltage, current, temperature and fault status.

Resources

DC2784A-A

View Detailed Evaluation Kit Information

This evaluation board is obsolete and no longer recommended. The replacement board is the DC2784B-A (coming soon).

Demonstration circuit 2784A-A is a high efficiency, high density, µModule regulator with 4.5V to 16V input range. The output voltage is adjustable from 0.5V to 1.8V and it can supply 200A maximum load current. The demo board has two LTM4700 µModule regulators, which is a dual 50A or single 100A step-down regulator with digital power system management. Please see LTM4700 data sheet for more detailed information.

DC2784A-A powers up to default settings and produces power based on configuration resistors without the need for any serial bus communication. This allows easy evaluation of the DC/DC converter. To fully explore the extensive power system management features of the part, download the GUI software LTpowerPlay^® onto your PC and use ADI’s I²C/SMBus/PMBus dongle DC1613A to connect to the board. LTpowerPlay allows the user to reconfigure the part on the fly and store the configuration in EEPROM, view telemetry of voltage, current, temperature and fault status.

Resources

DC2702A-B

View Detailed Evaluation Kit Information

This evaluation board is obsolete and no longer recommended. The replacement board is the DC2702B-B (coming soon).

Demonstration circuit 2702A-B is a single output, dual phases, high efficiency, high density, µModule regulator with 4.5V to 16V input range. The output voltage is adjustable from 0.5V to 1.8V and it can supply 100A maximum load current. The demo board has a LTM4700 µModule regulator, which is a dual 50A or single 100A step-down regulator with digital power system management. Please see LTM4700 data sheet for more detailed information.

DC2702A-B powers up to default settings and produces power based on configuration resistors without the need for any serial bus communication. This allows easy evaluation of the DC/DC converter. To fully explore the extensive the GUI software LTpowerPlay^® onto your PC and use LTC’s I²C/SMBus/PMBus dongle DC1613A to connect to the board. LTpowerPlay allows the user to reconfigure the part on-the-fly and store the configuration in EEPROM, view telemetry of voltage, current, temperature and fault status.

Resources

DC2702A-A

View Detailed Evaluation Kit Information

This evaluation board is obsolete and no longer recommended. The replacement board is the DC2702B-A (coming soon).

Demonstration circuit 2702A-A is a dual-output, high efficiency, high density, µModule^® regulator with 4.5V to 16V input range. Each output can supply 50A maximum load current. The demo board has a LTM4700 µModule regulator, which is a dual 50A or single 100A step-down regulator with digital power system management. Please see LTM4700 data sheet for more detailed information.

DC2702A-A powers up to default settings and produce power based on configuration resistors without the need for any serial bus communication. This allows easy evaluation of the DC/DC converter. To fully explore the extensive power system management features of the part, download the GUI software LTpowerPlay^® onto your PC and use ADI’s I²C/SMBus/PMBus dongle DC1613A to connect to the board. LTpowerPlay allows the user to reconfigure the part on-the-fly and store the configuration in EEPROM, view telemetry of voltage, current, temperature and fault status.

Resources

DC2784A-C

View Detailed Evaluation Kit Information

Demonstration circuit 2784A-C is a high efficiency, high density, µModule regulator with 4.5V to 16V input range. The output voltage is adjustable from 0.5V to 1.8V and it can supply 400A maximum load current. The demo board has four LTM4700 µModule regulators, which is a dual 50A or single 100A step-down regulator with digital power system management. Please see LTM4700 data sheet for more detailed information.

DC2784A-C powers up to default settings and produces power based on configuration resistors without the need for any serial bus communication. This allows easy evaluation of the DC/DC converter. To fully explore the extensive power system management features of the part, download the GUI software LTpowerPlay^® onto your PC and use ADI’s I²C/SMBus/PMBus dongle DC1613A to connect to the board. LTpowerPlay allows the user to reconfigure the part on the fly and store the configuration in EEPROM, view telemetry of voltage, current, temperature and fault status.

Resources

Documentation & Resources

Data Sheets

LTM4700: Dual 50A or Single 100A µModule Regulator with Digital Power System Management Data Sheet (Rev. B)
12/2/2020

PDF

7 M

Reliability Data

R583 Reliability Data
3/26/2018

PDF

345 K

Webcasts

Digital Power System Management for Embedded Systems
6/26/2020
Simplify Power with µModule Regulators
4/14/2020
Don't Let Power Supply Design be an Afterthought Webinar (EngineerZone)
12/12/2019
Simplify Power Designs with Micromodule Products
4/10/2018

Informational

μModule Design and Manufacturing Resources
1/30/2018

Solutions Bulletins & Brochures

µModule Regulators with PMBus I²C Interface
4/12/2019

PDF

1 M

Videos

ADI第4代µModule®稳压器简介
3/3/2022
Introducing ADI's 4th Generation µModule^® Regulators
3/3/2022

Press Releases

Analog Devices’ High-Power µModule Regulator Eases Data Center Cooling Requirements
4/21/2022

Tools & Simulations

LTspice

LTspice® is a powerful, fast and free simulation software, schematic capture and waveform viewer with enhancements and models for improving the simulation of analog circuits.

To launch ready-to-run LTspice demonstration circuits for this part:

Step 1: Download and install LTspice on your computer.

Step 2: Click on the link in the section below to download a demonstration circuit.

Step 3: If LTspice does not automatically open after clicking the link below, you can instead run the simulation by right clicking on the link and selecting “Save Target As.” After saving the file to your computer, start LTspice and open the demonstration circuit by selecting ‘Open’ from the ‘File’ menu.

LTspice downloads and documentation

LTspice Simulations

LTM4700 Demo Circuit - Single 100A µModule Buck Regulator with Digital Interface for Control & Monitoring (4.5-16V to 1V @ 100A)

LTM4700 Demo Circuit - Dual 50A µModule Buck Regulator with Digital Interface for Control & Monitoring (4.5-16V to 1V @ 50A & 1.5V @ 50A)

LTM4700 Demo Circuit - Polyphase µModule Buck Regulator with Digital Interface for Control & Monitoring (4.5-16V to 1V @ 200A)

LTM4700 Demo Circuit - Polyphase µModule Buck Regulator with Digital Interface for Control & Monitoring (4.5-16V to 1V @ 300A)

LTM4700 Demo Circuit - Polyphase µModule Buck Regulator with Digital Interface for Control & Monitoring (4.5-16V to 1V @ 400A)

Models for the following parts are available in LTspice:

LTM4700

LTpowerCAD

LTpowerCAD^® is a power supply design program which selects power stage components, provides detailed power efficiency, shows quick loop Bode plot stability and load transient analysis, and can export to LTspice for simulation.

To open the project file for this circuit:

Step 1: Download and install LTpowerCAD on your computer.

Step 2: Click on the link(s) in the section below to download part-specific project files.

Step 3: If the project file doesn't run, right-click the link and select "Save Target As." Then start the LTpowerCAD tool and open the project file by selecing "Open Project" from the "File" menu.

LTpowerCAD download and documentation

LTpowerCAD Project Files

LTM4700 Project - DC2784A-C 12Vin to 1Vout/400A, 350kHz

LTM4700 Project - DC2784A-B 12Vin to 1Vout/300A

LTM4700 Project - DC2784A-A 12Vin to 1Vout/200A, 350kHz

Design tools for the following parts are available in LTpowerCAD:

LTM4700

Reference Designs (4)

HTG-VSL1

Versal PRIME /AI PCI Express Platform

HTG-937: Xilinx Virtex UltraScale+ ™ VU37P/VU47P HBM Development Board

Intel Stratix 10 FPGA PCIe Development Kit

Stratix 10 GX Signal Integrity Development Kit

HTG-VSL1

Versal PRIME /AI PCI Express Platform

HTG-VSL1

Versal PRIME /AI PCI Express Platform

View Detailed Reference Design Information

Features & Benefits

Xilinx Versal^™ AI Core and Prime series solves a broad range of industry-specific problems with performance and flexibility. Core use cases include storage acceleration, data center network acceleration, 5G xHaul and Passive optical networks.

The HTG-VSL1 AI Core and Prime PCIe express platform allows easy and versatile functional expansion through two Vita 57.4 compliant High-Pin-Count FMC+ ports and one high-speed AcceleRate^® port.

Analog Devices, Inc. supports power delivery solutions for the HTG-VSL1 for the Versal AI Core and Versal Prime PCIe express platform. DC/DC μModule regulators are used on the HTG-VSL1 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.

ADI provides supporting documentation including power schematics, layout, LTpowerPlanner^® and applicable LTpowerPlay^® configuration files to enable you to validate the power solution for your application seamlessly.

For a complete list power designs and use cases, please contact your local FAE.

Key Power DC DC Modules include:

LTM4700 is a Dual 50A or Single 100A μModule Regulator with Digital Power System Management, PMBus
LTM4638 is a 15A Step-Down DC/DC μModule Regulator
LTM4625 is a 5A Step-Down DC/DC μModule Regulator
LTM4632 is a Triple Output, Step-Down μModule Regulator for DDR-QDR4 Memory
LTC2937 is a Programmable Six Channel Sequencer and Voltage Supervisor with EEPROM

Parts Used

HTG-937: Xilinx Virtex UltraScale+ ™ VU37P/VU47P HBM Development Board

View Detailed Reference Design Information

Features & 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.

Parts Used

Intel Stratix 10 FPGA PCIe Development Kit

View Detailed Reference Design Information

Features & Benefits

Analog Devices has worked closely with Intel PSG to develop verified power solutions that optimize cost, size and efficiency in high performance applications.
The validated power solutions include uModules power products that address time and space constraints while delivering high efficiency, reliability, and low noise.
The actual power tree represents the best solution at time of design.
A recommended power tree has also been included to present the ideal solution at time of Stratix 10 GX PCIe development kit release. An updated alternate version of the power tree represents the latest solutions available from Analog Devices. For many applications, an intermediate rail is not ideal, so recommendations an alternate power tree that allow for direct power conversion from 12V input is provided below.

Parts Used

Stratix 10 GX Signal Integrity Development Kit

View Detailed Reference Design Information

Features & Benefits

Analog Devices has worked closely with Intel PSG to develop verified power solutions that optimize cost, size and efficiency in high performance applications.
The validated power solutions include uModules power products that address time and space constraints while delivering high efficiency, reliability, and low noise.
The actual power tree represents the best solution at time of design.
A recommended power tree has also been included to present the ideal solution at time of Stratix 10 GX SI development kit release. An updated alternate version of the power tree represents the latest solutions available from Analog Devices. For many applications, an intermediate rail is not ideal, so recommendations for an alternate power tree that allows for direct power conversion from 12V input is provided below.

Parts Used

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
LTM4700EY#PBF	Material Declaration	Reliability Data	330-Lead BGA (22mm x 15mm x 7.87mm)	Ultra Librarian SamacSys
LTM4700IY	Material Declaration	Reliability Data	330-Lead BGA (22mm x 15mm x 7.87mm)	Ultra Librarian SamacSys
LTM4700IY#PBF	Material Declaration	Reliability Data	330-Lead BGA (22mm x 15mm x 7.87mm)	Ultra Librarian SamacSys
Wafer Fabrication Data		R583 Reliability Data

PCN-PDN Information

Select a model from the dropdown below to subscribe to PCN/PDN notifications and view past notifications as well.

Request Product/Process Change Notifications

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Support & Discussions

LTM4700 Discussions

RE: LTM4700 oscillates when paralleled

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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.