LTC7841

RECOMMENDED FOR NEW DESIGNS

LTC7841

PolyPhase Synchronous Boost Controller with PMBus Interface

RECOMMENDED FOR NEW DESIGNS

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Part Models 4

1ku List Price Starting From $4.65

Features

Wide V_IN Range: 4.5V to 60V
1% Total Output Voltage Accuracy Over Temperature at V_IN = 12V
PMBus Compliant Serial Interface:

Programmable V_OUT: Up to 60V with 0.2% Resolution
Read Back of Average and Peak Temperature, Current, and Voltage (25Hz Refresh Rate)
Fault Status

Phase-Lockable Frequency: 75kHz to 850kHz

Less than 1ms Power-Up Time
Power Good Output Voltage Monitor
Internal LDO Powers Gate Driver from VBIAS or EXTV_CC
Low Shutdown Current: I_Q < 10μA
Clock Out for 4-Phase Operation (40A Output Current)
Available in a Thermally-Enhanced 5mm × 6mm QFN
AEC-Q100 Qualification In Progress

Additional Details

The LTC7841 is a high performance PolyPhase^® single output synchronous boost converter controller that drives two N-channel power MOSFET stages out-of-phase. Multiphase operation reduces input and output capacitor requirements and allows the use of smaller inductors than the single-phase equivalent. Synchronous rectification increases efficiency, reduces power loss and eases thermal requirements, enabling high power boost applications. The output voltage can be adjusted up to 60V with 0.2% resolution via a PMBus-compliant serial interface. The serial interface can also be used to read back fault status, input/output current, input/output voltage and temperature. System configuration and monitoring is supported by the LTpowerPlay^® development system.

PolyPhase operation allows the LTC7841 to be configured for 2-, 3-, 4-, 6-, and 12-phase operation.

APPLICATIONS

Automotive Systems, Medical, Industrial

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Ask a Question

Submit your question below and we will return the best answer from ADI’s knowledge database:

Other places you can find help

Support

Analog Devices Support Portal is a one-stop shop to answer all your ADI questions.

Visit the ADI Support Page

Ask the ADI community for help.

Ask the EngineerZone Community

FAQs

Sales & Ordering FAQs

Part Models 4

1ku List Price Starting From $4.65

Documentation

Technical Documents 3

LTC7841: PolyPhase Synchronous Boost Controller with PMBus Interface Data Sheet (Rev.A) 10/01/2019

R526 Reliability Data 03/26/2018

DC2798A - Demo Manual (Rev.0) 04/03/2020

Design Resources 4

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 Model	Pin/Package Drawing	Documentation	CAD Symbols, Footprints, and 3D Models
LTC7841EUHE#PBF	36-Lead QFN (5mm x 6mm x 0.75mm w/ EP)	HTML Material Declaration HTML Reliablity Data	Ultra Librarian SamacSys
LTC7841EUHE#TRPBF	36-Lead QFN (5mm x 6mm x 0.75mm w/ EP)	HTML Material Declaration HTML Reliablity Data	Ultra Librarian SamacSys
LTC7841IUHE#PBF	36-Lead QFN (5mm x 6mm x 0.75mm w/ EP)	HTML Material Declaration HTML Reliablity Data	Ultra Librarian SamacSys
LTC7841IUHE#TRPBF	36-Lead QFN (5mm x 6mm x 0.75mm w/ EP)	HTML Material Declaration HTML Reliablity Data	Ultra Librarian SamacSys

LTC7841EUHE#PBF
Pin/Package Drawing
36-Lead QFN (5mm x 6mm x 0.75mm w/ EP)
Documentation

HTML Material Declaration

HTML Reliablity Data

CAD Symbols, Footprints, and 3D Models
Ultra Librarian
SamacSys

LTC7841EUHE#TRPBF
Pin/Package Drawing
36-Lead QFN (5mm x 6mm x 0.75mm w/ EP)
Documentation

HTML Material Declaration

HTML Reliablity Data

CAD Symbols, Footprints, and 3D Models
Ultra Librarian
SamacSys

LTC7841IUHE#PBF
Pin/Package Drawing
36-Lead QFN (5mm x 6mm x 0.75mm w/ EP)
Documentation

HTML Material Declaration

HTML Reliablity Data

CAD Symbols, Footprints, and 3D Models
Ultra Librarian
SamacSys

LTC7841IUHE#TRPBF
Pin/Package Drawing
36-Lead QFN (5mm x 6mm x 0.75mm w/ EP)
Documentation

HTML Material Declaration

HTML Reliablity Data

CAD Symbols, Footprints, and 3D Models
Ultra Librarian
SamacSys

Software & Part Ecosystem

Evaluation Kit

DC2798A

LTC7841 | 60V Dual-Phase Single Output Synchronous Boost Controller with PMBus

DC2798A

LTC7841 | 60V Dual-Phase Single Output Synchronous Boost Controller with PMBus

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Product Detail

Demonstration circuit 2798A is a high voltage, dual-phase single output boost converter with 10V to 16V input range. The output voltage is adjustable from V_IN to 48V. And the output can supply a 10A maximum load current. The demo board has a LTC7841 controller, which is a 60V dual-phase single output boost controller with digital power system management. Please see the LTC7841 data sheet for more detailed information.

The DC2798A powers up to default settings and produces power based on the command from the 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, view telemetry of voltage, current, temperature and fault status.

Resources

PDF

DC2798A - Schematic

60.72 K

ZIP

DC2798A - Design Files

3.47 M

PDF

DC2798A - Demo Manual (Rev.0)

2.09 M

DC2798A

LTC7841 | 60V Dual-Phase Single Output Synchronous Boost Controller with PMBus

Tools & Simulations

LTspice 1

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.

Lt Spice

LTC7841 - Step-Up (Boost) Regulators

4.39 K

Linduino 2

Linduino

Linduino is Analog Devices’ Arduino compatible system for developing and distributing firmware libraries and example code for our integrated circuits. Each Linduino-supported product includes an example main program, defined in the LTSketchbook/Part Number folder and driver code, defined in the LTSketchbook/libraries folder.

Linduino code repository on GitHub and instructions on how to use the code.

Purchase Linduino

Linduino download and documentation

Code Files

Linduino

LTC7841 - DC2978A.ino File

LTC7841 - Linduino Header File

LTpowerCAD 1

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