LTM4650
Info : RECOMMENDED FOR NEW DESIGNS
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LTM4650

Dual 25A or Single 50A DC/DC μModule Regulator

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Info : RECOMMENDED FOR NEW DESIGNS tooltip
Info : RECOMMENDED FOR NEW DESIGNS tooltip
Part Details
Features
  • Dual 25A or Single 50A Output
  • Input Voltage Range: 4.5V to 15V
  • Output Voltage Range: 0.6V to 1.8V
  • ±1.5% Maximum Total DC Output Error Over Line, Load and Temperature
  • Differential Remote Sense Amplifier
  • Current Mode Control/Fast Transient Response
  • Adjustable Switching Frequency
  • Frequency Synchronization
  • Overcurrent Foldback Protection
  • Multiphase Parallel Current Sharing with Multiple LTM4650s Up to 300A
  • Internal Temperature Monitor
  • Pin Compatible with the LTM4620 (Dual 13A, Single 26A) and LTM4630 (Dual 18A, Single 36A)
  • Selectable Burst Mode® Operation
  • Soft-Start/Voltage Tracking
  • Output Overvoltage Protection
  • 16mm × 16mm × 5.01mm BGA Package
Additional Details
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The LTM4650 is a dual 25A or single 50A output switching mode step-down DC/DC μModule® (power module) regulator. Included in the package are the switching controllers, power FETs, inductors, and all supporting components. Operating from an input voltage range of 4.5V to 15V, the LTM4650 supports two outputs each with an output voltage range of 0.6V to 1.8V, each set by a single external resistor. Its high efficiency design delivers up to 25A continuous current for each output. Only a few input and output capacitors are needed. The LTM4650 is pin compatible with the LTM4620 (dual 13A, single 26A) and the LTM4630 (dual 18A, single 36A).

The device supports frequency synchronization, multiphase operation, Burst Mode operation and output voltage tracking for supply rail sequencing and has an onboard temperature diode for device temperature monitoring. High switching frequency and a current mode architecture enable a very fast transient response to line and load changes without sacrificing stability.

Fault protection features include overvoltage and overcurrent protection. The LTM4650 is offered in a 16mm × 16mm × 5.01mm BGA package.

Vin Range Vout Range Comp DC Vout Accy
LTM4650 4.5V to 15V 0.6V to 1.8V Internal 1.5%
LTM4650-1B 4.5V to 15V 0.6V to 1.8V External 1.5%
LTM4650-1A 4.5V to 15V 0.6V to 1.8V External 0.8%
LTM4650A 4.5V to 16V 0.6V to 5.5V Internal 1%
LTM4650A-1 4.5V to 16V 0.6V to 5.5V External 1%

APPLICATIONS

  • Processor, ASIC and FPGA Core Power
  • Telecom and Networking Equipment
  • Storage and ATCA Cards
  • Industrial Equipment

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Documentation

Documentation

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Product Lifecycle

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Jul 22, 2022

- 22_0169

Notification of additional Assembly Location, ASE Korea for LTM4650 and LTM4650A

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Nov 8, 2021

- 20_0245

Notification of Wafer Fab Location Change for 0.6µm BICMOS Process Devices from ADI Milpitas (Hillview) to Vanguard Int. (Taiwan)

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Jul 21, 2021

- 21_0159

Ink Mark to Laser Mark Conversion for µModule

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Feb 28, 2020

- 20_0123

Micro-Module, Test Site Transfer from Analog Devices Singapore to Analog Devices Penang, Malaysia

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Feb 5, 2020

- 20_0127

Supplier Material Change for µModule

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Jul 25, 2019

- 19_0168

Notification of qualification of a new mold compound for the LTM4650, LTM4650A, LTM4650A-1 µModule Regulator

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Jul 22, 2022

- 22_0169

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Notification of additional Assembly Location, ASE Korea for LTM4650 and LTM4650A

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PRODUCTION

LTM4650IY

PRODUCTION

LTM4650IY#PBF

PRODUCTION

LTM4650MPY

PRODUCTION

LTM4650MPY#PBF

PRODUCTION

Nov 8, 2021

- 20_0245

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Notification of Wafer Fab Location Change for 0.6µm BICMOS Process Devices from ADI Milpitas (Hillview) to Vanguard Int. (Taiwan)

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LTM4650IY

PRODUCTION

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Jul 21, 2021

- 21_0159

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Ink Mark to Laser Mark Conversion for µModule

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LTM4650MPY

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Feb 28, 2020

- 20_0123

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Micro-Module, Test Site Transfer from Analog Devices Singapore to Analog Devices Penang, Malaysia

LTM4650EY#PBF

PRODUCTION

LTM4650IY

PRODUCTION

LTM4650IY#PBF

PRODUCTION

LTM4650MPY

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PRODUCTION

Feb 5, 2020

- 20_0127

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Supplier Material Change for µModule

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PRODUCTION

LTM4650IY

PRODUCTION

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PRODUCTION

LTM4650MPY

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PRODUCTION

Jul 25, 2019

- 19_0168

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Notification of qualification of a new mold compound for the LTM4650, LTM4650A, LTM4650A-1 µModule Regulator

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Software & Part Ecosystem

Software & Part Ecosystem

Evaluation Kit

Evaluation Kits 5

reference details image

DC2378A-A

LTM4650 Demo Board | Dual Buck µModule Regulator, 4.5V ≤ VIN ≤ 15V, VOUT = 0.6V to 1.8V @ 50A or Dual 25A

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DC2378A-A

LTM4650 Demo Board | Dual Buck µModule Regulator, 4.5V ≤ VIN ≤ 15V, VOUT = 0.6V to 1.8V @ 50A or Dual 25A

LTM4650 Demo Board | Dual Buck µModule Regulator, 4.5V ≤ VIN ≤ 15V, VOUT = 0.6V to 1.8V @ 50A or Dual 25A

Product Detail

Demonstration circuit DC2378A-A features the LTM4650EY, the high efficiency, high density, dual 25A, single 50A, switch mode step-down power module regulator. The input voltage is from 4.5V to 15V. The output voltage is programmable from 0.6V to 1.8V. DC2378A-A can deliver 25A maximum current from each channel. 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 jumper (JP1) selects pulse-skipping mode for noise sensitive applications or Burst Mode® operation in less noise sensitive applications. Two outputs can be connected in parallel for a single 50A output solution with optional jumper resistors.

reference details image

DC2481A-A

LTM4677/LTM4650 Demo Board | Buck μModule Regulator with Digital PSM, LTM4677 + LTM4650, 4.5V ≤ VIN ≤ 16V, VOUT = 0.5V to 1.8V @ 86A

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DC2481A-A

LTM4677/LTM4650 Demo Board | Buck μModule Regulator with Digital PSM, LTM4677 + LTM4650, 4.5V ≤ VIN ≤ 16V, VOUT = 0.5V to 1.8V @ 86A

LTM4677/LTM4650 Demo Board | Buck μModule Regulator with Digital PSM, LTM4677 + LTM4650, 4.5V ≤ VIN ≤ 16V, VOUT = 0.5V to 1.8V @ 86A

Product Detail

Demonstration circuit 2481A-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 86A maximum load current. The demo board has 1× LTM4677 and 1× LTM4650 μModule regulators. The LTM4677 is a dual 18A or single 36A step-down regulator with PMBus power system management, and the LTM4650 is a dual 25A or single 50A step-down regulator. Please see LTM4677 and LTM4650 data sheets for more detailed information.

reference details image

DC2479A-A

LTM4650EY Demo Board | Dual Phase Buck μModule Regulator, 4.5V ≤ VIN ≤ 15V, VOUT = 0.6V to 1.8V @ 50A

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DC2479A-A

LTM4650EY Demo Board | Dual Phase Buck μModule Regulator, 4.5V ≤ VIN ≤ 15V, VOUT = 0.6V to 1.8V @ 50A

LTM4650EY Demo Board | Dual Phase Buck μModule Regulator, 4.5V ≤ VIN ≤ 15V, VOUT = 0.6V to 1.8V @ 50A

Product Detail

Demonstration circuit 2479A-A features the LTM4650EY, the high efficiency, high density, dual 25A, single 50A switch mode step-down power module regulator. The input voltage is from 4.5V to 15V. The output voltage is programmable from 0.6V to 1.8V. DC2479A-A is configured as dual-phase, single-output, which can deliver up to 50A maximum. The board designs with minimum components to demonstrate this high efficiency, high density μModule. As explained in the data sheet, output current de-rating is necessary for certain VIN, VOUT, and thermal conditions. These features and the availability of the LTM4650EY in a compact 16mm × 16mm × 5.01mm BGA package make it ideal for use in many high-density point-of-load applications. The LTM4650 data sheet must be read in conjunction with this demo manual for working on or modifying the demo circuit DC2479A-A.


 


reference details image

DC2481A-B

LTM4677/LTM4650 Demo Board | Buck μModule Regulator with Digital PSM, LTM4677 + LTM4650(x3), 4.5V ≤ VIN ≤ 16V, VOUT = 0.5V to 1.8V @ 186A

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DC2481A-B

LTM4677/LTM4650 Demo Board | Buck μModule Regulator with Digital PSM, LTM4677 + LTM4650(x3), 4.5V ≤ VIN ≤ 16V, VOUT = 0.5V to 1.8V @ 186A

LTM4677/LTM4650 Demo Board | Buck μModule Regulator with Digital PSM, LTM4677 + LTM4650(x3), 4.5V ≤ VIN ≤ 16V, VOUT = 0.5V to 1.8V @ 186A

Product Detail

Demonstration circuit 2481A-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 186A maximum load current. The demo board has 1× LTM4677 and 3× LTM4650 μModule regulators. The LTM4677 is a dual 18A or single 36A step-down regulator with PMBus power system management, and the LTM4650 is a dual 25A or single 50A step-down regulator. Please see LTM4677 and LTM4650 data sheets for more detailed information.

reference details image

DC2481B-A

LTM4677 and LTM4650 Demo Board | Step-Down μModule Regulator with PMBus Power System Management LTM4677 + LTM4650, 86A

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DC2481B-A

LTM4677 and LTM4650 Demo Board | Step-Down μModule Regulator with PMBus Power System Management LTM4677 + LTM4650, 86A

LTM4677 and LTM4650 Demo Board | Step-Down μModule Regulator with PMBus Power System Management LTM4677 + LTM4650, 86A

Product Detail

Demonstration circuit 2481B-A is a high efficiency, high density, μModule® regulator with 4.5V to 15V input range. The output voltage is adjustable from 0.6V to 1.8V, and it can supply 86A maximum load current. The demo board has 1× LTM4677 and 1× LTM4650 μModule regulators. The LTM4677 is a dual 18A or single 36A step-down regulator with PMBus power system management, and the LTM4650 is a dual 25A or single 50A step-down regulator. Please see LTM4677 and LTM4650 data sheets for more detailed information.

DC2481B-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 Analog Devices 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.

For more details and instructions of LTpowerPlay, please refer to LTpowerPlay Software GUI.

Tools & Simulations

Tools & Simulations 2

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.

Reference Designs

Reference Designs 4

Zynq UltraScale Board 922

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htg-z922

Circuits from the lab

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Features and Benefits

The HTG-Z922 provides access to large FPGA gate densities, wide range of I/O and expandable DDR4 memory for variety of different programmable applications. It is populated with the Xilinx Zynq Ultrascale+ ZU17-2 or ZU19-2 FPGA. Analog Devices power solution on this platform is fully validated to meet the requirements of Xilinx Zynq Ultrascale+ FPGAs to ensure a robust power delivery solution.

DC/DC μModule regulators are used on the HTG-Z922 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.

View Detailed Reference Design external link
Stratix 10 GX PCIE FPGA Development Kit

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intel-stratix-10-fpga-pcie-development-kit

intel-stratix-10-fpga-pcie-development-kit

Circuits from the lab

tooltip Info:Circuits from the lab

Features and 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.
View Detailed Reference Design external link
Stratix 10 GX Signal Integrity Development Kit

zoomopens a dialog

intel-stratix-10-SI-fpga-development-kit

intel-stratix-10-SI-fpga-development-kit

Circuits from the lab

tooltip Info:Circuits from the lab

Features and 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.
View Detailed Reference Design external link
Ultrascale+ 910

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htg-910

Circuits from the lab

tooltip Info:Circuits from the lab

Features and Benefits

The HTG-910 is low profile network card that provides access to eight lanes of PCI Express. It is populated with the Xilinx Zynq Virtex Ultrascale VU5P, VU9P, VU13P or Ultrascale VU190 FPGA. 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-910 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.

View Detailed Reference Design external link

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