LTM4630A

Dual 18A or Single 36A DC/DC μModule Regulator

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Alternative Parts

LTM4630

Dual 18A or Single 36A DC/DC μModule (Power Module) Regulator

LTM4630-1

Dual 18A or Single 36A μModule (Power Module) Regulator with 0.8% DC and 3% Transient Accuracy

Overview

Features and Benefits
Product Details

Features and Benefits

Dual 18A or Single 36A Output
Input Voltage Range: 4.5V to 18V (after date code 1720*)
Output Voltage Range: 0.6V to 8V (after date code 1720*)
±1.5% Maximum Total DC Output Error Over Line, Load and Temperature
Higher Light Load Efficiency and Wider V_OUT Range Than LTM4630
Differential Remote Sense Amplifier
Current Mode Control/Fast Transient Response
Multiphase Parallel Current Sharing Up to 144A
Internal Temperature Monitor
Pin Compatible with the LTM4620A (Dual 13A, Single 26A) and LTM4630 (Dual 18A, Single 36A)
Adjustable Switching Frequency or Synchronization
Overcurrent Foldback Protection
Selectable Burst Mode^®Operation, Pulse Skipping Mode Operation
Soft-Start/Voltage Tracking
Output Overvoltage Protection
16mm × 16mm × 4.41mm LGA and 16mm × 16mm × 5.01mm BGA Packages

Product Details

The LTM4630A is a dual 18A or single 36A output switching mode step-down DC/DC µModule^® (micromodule) regulator with wider V_OUT range and higher efficiency than LTM4630. 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 18V, the LTM4630A supports two outputs each with an output voltage range of 0.6V to 8V, each set by a single external resistor. Its high efficiency design delivers up to 18A continuous current for each output. Only a few input and output capacitors are needed. The LTM4630A is pin compatible with the LTM4620 and LTM4620A (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 LTM4630A is offered in 16mm × 16mm × 4.41mm LGA and 16mm × 16mm × 5.01mm BGA packages.

*Maximum V_IN = 15V and V_OUT = 5.3V with date code before 1720


	Features	V_OUT
LTM4630		0.6V to 1.8V
LTM4630-1	0.8% DC and 3% Transient Accuracy	0.6V to 1.8V
LTM4630A	Higher Light Load Efficiency	0.6V to 5.3V

Applications

Telecom and Networking Equipment
Storage and ATCA Cards
Industrial Equipment

Product Categories

Power Management
- µModule Buck Regulators
- Multiple Output Buck Regulators

Comparable Parts Click to see all in Parametric Search

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 (2)

DC2268A-F

LTM4630A Demo Board | Dual 18A or Single 36A μModule Regulator

DC2152A

LTM4630A Demo Board | Dual 18A Step-Down uModule Regulator, 6V ≤ V_IN ≤ 15V, V_OUT1/V_OUT2 = 3.3V/5V @ 18A

DC2268A-F

View Detailed Evaluation Kit Information

Demonstration circuit 2268A-F is a high efficiency, high density, dual 8A, switch mode step-down power supply on a compact 1.5' × 1.2' PCB. It features the LTM4630A μModule^® regulator. The input voltage is from 4.5V to 15V. The output voltage is programmable from 0.6V to 5.3V. DC2268A-F can deliver up to 18A maximum in each channel. As explained in the data sheet, output current derating is necessary for certain V_IN, V_OUT, and thermal conditions. The board operates in continuous conduction mode in heavy load conditions. For high efficiency at low load currents, the resistor jumper (R1/R2) selects pulse-skipping mode for noise sensitive applications or Burst-Mode^® in less noise sensitive applications. Two outputs can be connected in parallel for a single 36A output solution with optional jumper resistors. The board allows the user to program how its output ramps up and down through the TRACK/SS pin. Remote output voltage sensing is available for improved output voltage regulation at the load point. An optional input inductor L1 reduces the EMI noise for noise sensitive applications. DC2268A can be easily inserted to an edge connector for testing and debugging. These features and the availability of the LTM4630A in a compact 16mm × 16mm × 4.41mm LGA package make it ideal for use in many high-density point-of-load regulation applications. The LTM4630A data sheet must be read in conjunction with this demo manual for working on or modifying the DC2268A-F.

Resources

DC2152A

View Detailed Evaluation Kit Information

Demonstration circuit 2152A features the LTM4630AEV high efficiency, high density, dual 18A, switch mode step-down µModule regulator. The input voltage is from 6V to 15V, and the output voltages are set at 3.3V and 5V, but are programmable from 0.6V to 5.3V. The DC2152A can deliver up to 18A maximum from each channel. The two outputs can be connected in parallel for a single 36A output solution with optional jumper resistors. ±3% transient accuracy can be achieved with a 25% load step.

Output current derating is necessary for certain V_IN, V_OUT, and thermal conditions. Its many features and its compact 16mm × 16mm × 4.41mm LGA package make the LTM4630AEV ideal for use in many high-density point-of-load regulation applications.

Resources

Documentation & Resources

Data Sheets

LTM4630A: Dual 18A or Single 36A DC/DC μModule (Power Module) Regulator Data Sheet
2/1/2017

PDF

1 M

User Guides

DC2152A - Demo Manual
1/16/2017

PDF

1M

Product Selector Card

μModule Power Products
4/4/2017

PDF

10M

Informational

μModule Design and Manufacturing Resources
1/30/2018

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

LTM4630A Demo Circuit - High Efficiency Dual 18A Buck with Output Tracking (6-15V to 3.3 V & 5.0V @ 18A)

Models for the following parts are available in LTspice:

LTM4630

LTM4630-1

LTM4630A

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

LTM4630A Project - High Efficiency Dual 18A Step-Down uModule Regulator (6-15V to 3.3 V & 5.0V @ 18A)

Design tools for the following parts are available in LTpowerCAD:

LTM4630

LTM4630-1

LTM4630A

Reference Designs (2)

Intel Stratix 10 FPGA PCIe Development Kit

Stratix 10 GX Signal Integrity Development Kit

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

Product Recommendations

LTM4630A Companion Parts

Recommended Related Parts

LTC2975, LTM4650.

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
LTM4630AEV#PBF	Material Declaration	Reliability Data	144-Lead LGA (16mm x 16mm x 4.41mm)	Ultra Librarian SamacSys
LTM4630AEY#PBF	Material Declaration	Reliability Data	144-Lead BGA (16mm x 16mm x 5.01mm)	Ultra Librarian SamacSys
LTM4630AIV#PBF	Material Declaration	Reliability Data	144-Lead LGA (16mm x 16mm x 4.41mm)	Ultra Librarian SamacSys
LTM4630AIY#PBF	Material Declaration	Reliability Data	144-Lead BGA (16mm x 16mm x 5.01mm)	Ultra Librarian SamacSys
Wafer Fabrication Data

PCN-PDN Information

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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.