LTM4647

RECOMMENDED FOR NEW DESIGNS

30A DC/DC Step-Down μModule Regulator

Data Sheet Product Selection Table
Part Models
3
1ku List Price
Starting From $34.96
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Part Details

  • 4.7V to 15V Input Voltage Range
  • 0.6V to 1.8V Output Voltage Range
  • 30A DC Output Current
  • ±1.2% Total DC Output Voltage Error (–40°C to 125°C)
  • High Reliability N + 1 Phase Redundancy Supported
  • Internal or External Control Loop Compensation
  • Differential Remote Sense Amplifier for Precision Regulation
  • Current Mode Control/Fast Transient Response
  • Multiphase Current Sharing Up to 180A
  • Built-In Temperature Monitoring
  • Selectable Pulse-Skipping, Burst Mode® Operation
  • Soft-Start/Voltage Tracking
  • Frequency Synchronization
  • Output Overvoltage Protection
  • Output Overcurrent Foldback Protection
  • 9mm × 15mm × 5.01mm BGA Package
LTM4647
30A DC/DC Step-Down μModule Regulator
12VIN, 1VOUT, 30A DC/DC μModule Regulator 1VOUT Efficiency vs Load Current Product Package 1
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Documentation

Data Sheet 1

Reliability Data 1

User Guide 2

Data Sheet

This is the most up-to-date revision of the Data Sheet.

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Hardware Ecosystem

Parts Product Life Cycle Description
Digital Power System Managers 1
LTC2975
RECOMMENDED FOR NEW DESIGNS 4-Channel PMBus Power System Manager Featuring Accurate Input Current and Energy Measurement
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Tools & Simulations

LTspice 3

Models for the following parts are available in LTspice:

  • LTM4647

LTpowerCAD 1

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.

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.

Evaluation Kits

eval board
schematic 1
DC2616A-D

LTM4647 High Efficiency, PolyPhase 120A Step-Down Power μModule Regulator

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Product Details

Demonstration circuit 2616A-D features a polyphase design using the LTM4647EY, a 30A high efficiency, switch mode step-down power µModule regulator. The input voltage range is from 6V to 15V. To use DC2616A-D for input voltage range from 4.7V to 6V, connect INTVCC to SVIN (change R22, R42, R55, R68 from OPT to 0Ω), DRVCC to VIN (change R21, R38, R52, R65 from 0Ω to OPT, R2, R39, R53, R66 from OPT to 0Ω). The output voltage range is 0.6V to 1.8V. The DC2616A-D can deliver a nominal 120A output current with four LTM4647 modules in parallel. As explained in the data sheet, output current derating is necessary for certain VIN, VOUT, and thermal conditions. The board operates in continuous conduction mode in heavy load conditions. For high efficiency at low load currents, the MODE_PLLIN jumper selects pulseskipping mode for noise sensitive applications or burst mode operation in less noise sensitive applications. The MODE_PLLIN pin also allows the LTM4647 to synchronize to an external clock signal. The phase shift between two adjacent phases is 90 degrees. DC2616A-D has the option of choosing both internal and external compensation circuit for LTM4647. The LTM4647 data sheet must be read in conjunction with this demo manual prior to working on or modifying demo circuit DC2616A-D.

eval board
schematic 2
schematic 3
schematic 4
schematic 5
DC2141A

LTM4647 Demo Board | Buck μModule, 6V ≤ VIN ≤ 15V or 4.7V ≤ VIN ≤ 6V, VOUT = 0.6V to 1.8V @ 30A

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Product Details

Demonstration circuit 2141A features the LTM4647EY, a 30A high efficiency, switch mode step-down power μModule regulator. The input voltage range is from 6V to 15V. To use DC2141A for input voltage range from 4.7V to 6V, connect INTVCC to SVIN (change R22 from OPT to 0Ω), DRVCC to VIN (change R21 from 0Ω to OPT, R28 from OPT to 0Ω). The output voltage range is 0.6V to 1.8V. Derating is necessary for certain VIN, VOUT, frequency and thermal conditions. The DC2141A offers the TRK/SS pin allowing the user to program output tracking or soft-start period. The board operates in continuous conduction mode in heavy load conditions. For high efficiency at low load currents, the MODE_PLLIN jumper selects pulse-skipping mode for noise sensitive applications or Burst Mode® operation in less noise sensitive applications.
DC2616A-D
LTM4647 High Efficiency, PolyPhase 120A Step-Down Power μModule Regulator
DC2616A-D Image
DC2141A
LTM4647 Demo Board | Buck μModule, 6V ≤ VIN ≤ 15V or 4.7V ≤ VIN ≤ 6V, VOUT = 0.6V to 1.8V @ 30A
DC2141A Demo Board DC2141A Demo Board DC2141A Demo Board DC2141A Demo Board

Reference Designs

Agilex7 2X F-Tile Alternative µModule
Agilex7 2X F-Tile Alternative µModule
Intel Agilex 7 FPGA F-series Development Kit (2x F-Tile) (Alternative µModule) Circuits from the lab

Altera FPGA

View Detailed Reference Design

Features and Benefits

  • Intel Agilex 7 F-Series devices target a wide range of applications across many markets. This series offers transceiver rates up to 58 Gbps, advanced DSP blocks supporting multiple precisions of fixed-point and floating-point operations, and high-performance crypto blocks.
  • 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.
  • ADI provides supporting documentation including LTpowerPlanner and applicable LTpowerPlay configuration files to enable you to validate the power solution for your application seamlessly. Our team can provide samples and/or evaluation boards for quick validation that can speed time to market in the most complex applications.
  • For a complete list power designs and use cases, please contact your local FAE.
Intel Agilex 7 FPGA F-series Development Kit (2x F-Tile) (Alternative µModule)
Altera FPGA
Agilex7 2X F-Tile Alternative µModule

Latest Discussions

2 Years Ago
RE: LTM4644 and LTM4647 of S-parameter and IBIS File
2 Years Ago
RE: I would like to request a review of the LTM4647 schematic.
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