Maxim
›
Products
›
Power
›
›
MAX20751

MAX20751

Multiphase Master with PMBus Interface and Internal Buck Converter

Data Sheet
Subscribe

Please check latest availability status for a specific part variant.

Overview

Description

The MAX20751 PMBus™-compliant multiphase master IC, with extensive status and parameter monitoring, is capable of driving up to four smart-slave integrated power devices.

Utilizing Maxim’s smart-slave ICs, the device provides a high-density and flexible solution that can be tailored to a range of power loads used in communication equipment. Proprietary-coupled inductors, recommended to reduce the effective inductor value without excessive ripple current, results in improved transient response and reduction in the number of output capacitors required.

The device incorporates current reporting, temperature monitoring, fault detection, and PMBus support. Overcurrent and overtemperature faults are detected by the individual smart slaves and faults communicated through the master IC. The highest junction temperature is reported, both before and after smart-slave regulation.

The device features an integrated switching regulator that can optionally be used to supply the VDD rail for the master controller and smart-slave devices to reduce the power-rail requirements and simplify the regulator design.
MAX20751: Typical Operating Circuit MAX20751: Typical Operating Circuit Enlarge+

Key Features

  • Increased Power Density with Fewer External Components Needed
    • Scalable, Multiphase Solution
    • Compatibility with Coupled Inductors Enables Fast Transient Response and Reduced COUT
    • Integrated Internal Switching Regulator to Power Smart Slaves
  • Optimized Component Performance and Efficiency with Reduced Design-In Time
    • PMBus-Compliant Interface for Telemetry and Power Management
    • Field-Programmable Memory to Allow Storage of Desired Configuration Parameters
    • Fault Logging
  • Comprehensive System and IC Self-Protection Features Promote Increased Power-Supply Reliability
    • Overcurrent and Overtemperature
    • Boost Voltage UVLO
    • VX Short to Ground or VDDH Detection
    • Phase-Current Steering for Thermal Balancing
  • 36-Pin (6mm × 6mm) QFN Package

Applications/Uses

  • Communication, Networking, Servers, and Storage Equipment: ASICs, Memory VDDQ, Microprocessor Chipsets, and other High-Current Digital ICs

Key Specs

Part NumberVIN
(V)		VIN
(V)		VOUT1
(V)		VOUT1
(V)		Output Adjust. MethodIOUT1
(A)		Switch TypeSynchronous SwitchingPower Good SignalDC-DC OutputsOper. Freq.
(kHz)		Design ToolsPackage/PinsBudgetary
Price
minmaxminmaxSee Notes
MAX20751 1.713.630.51.52
Digital/VID
Resistor
120ExternalYesYes1800EE-Sim
SAWN QFN/36
$3.23 @1k
See All Step-Down Switching Regulators (353)
Pricing Notes:
This pricing is BUDGETARY, for comparing similar parts. Prices are in U.S. dollars and subject to change. Quantity pricing may vary substantially and international prices may differ due to local duties, taxes, fees, and exchange rates. For volume-specific and version-specific prices and delivery, please see the price and availability page or contact an authorized distributor.

Design Resources


MAX20751S1VKIT: Evaluation Kit for the MAX20751/VT1697SB

Technical Documents

User Guide 6055 KCU1250 MGT Module Quick Start Guide
User Guide 5981 PowerTool MAXPOWERTOOL002# Quick Start Guide
User Guide 5941 MAX20751 PMBus Implementation Guide
User Guide 5861 EE-SIM Design and Simulation Environment User Guide

Quality and Environmental Data

Product Reliability Reports: MAX20751.pdf 
Lead-Free Package Tin (Sn) Whisker Reports

Additional Resources

The EV kit requires the use of the MAXPOWERTOOL002# which is not included and must be purchased separately.

Tools & Models

  • EE-Sim: Design & Simulate MAX20751

    • Software
    Digital PowerTool Software V2.24.00  
    Digital PowerTool Software V2.25.00  
    Digital PowerTool Software V2.26.00  
    Digital PowerTool Software V2.28.00  

    Quality And Environmental

    Device   Fab Process   Technology   Sample size   Rejects   FIT at 25°C   FIT at 55°C  

    Note : The failure rates are summarized by technology and mapped to the associated material part numbers. The failure rates are highly dependent on the number of units tested.

    Quality Management System >
    Environmental Management System >

    Order

    Related Resources

    Related Products

    New Products


    MAX77503
    14V Input, 1.5A High-Efficiency Buck Converter with 9μA IQ

    • 1.5A Single Channel Buck Regulator
    • 3V to 14V Input Voltage Range
    • 0.8V to 99%VSUP Output Voltage Range

    MAX17271
    nanoPower Triple/Dual-Output, Single-Inductor, Multiple-Output (SIMO) Buck-Boost Regulator

    • 3-Output/2-Output, Single-Inductor, Multiple-Output (SIMO) Buck-Boost Regulator
    • 2.7V to 5.5V Input Voltage Range
    • Low-Power and Long Battery Life

    MAX17270
    nanoPower Triple/Dual-Output, Single-Inductor, Multiple-Output (SIMO) Buck-Boost Regulator

    • 3-Output/2-Output, Single-Inductor, Multiple-Output (SIMO) Buck-Boost Regulator
    • 2.7V to 5.5V Input Voltage Range
    • Low-Power and Long Battery Life

    MAXM17900
    4V to 24V, 100mA, Compact Step-Down Power Module

    • Easy to Use
    • High Efficiency
    • Flexible Design

    MAXM17552
    4V to 60V, 100mA, Compact Step-Down Power Module

    • Easy to Use
    • High Efficiency
    • Flexible Design

    MAX38888
    2.5V–5.0V, 0.5A/2.5A Reversible Buck/Boost Regulator for Backup Power Applications

    • 2.5V to 5V System Output Voltage
    • 0.8V to 4.5V Cap Voltage Range
    • Up to 2.5A Peak Inductor Discharge Current

    MAX17250
    2.7V to 18V Input, Boost Converter with 0.1uA True Shutdown, Short Circuit Protection and Selectable Input Current Limit

    • Input Voltage Range 2.7V to 18V
    • Output Voltage Range 3V to 18V, > VIN
    • Integrated Power FETs

    MAX17671
    Integrated 4V-60V, 150mA, High-Efficiency, Synchronous Step-Down DC-DC Converter with 50mA Linear Regulator

    • Reduces External Components and Total Cost
    • Reduces Number of DC-DC Regulators to Stock
    • Reduces Power Dissipation

    MAX17672
    Integrated 4V-60V, 150mA, High-Efficiency, Synchronous Step-Down DC-DC Converter with 50mA Linear Regulator

    • Reduces External Components and Total Cost
    • Reduces Number of DC-DC Regulators to Stock
    • Reduces Power Dissipation

    MAX17670
    Integrated 4V-60V, 150mA, High-Efficiency, Synchronous Step-Down DC-DC Converter with 50mA Linear Regulator

    • Reduces External Components and Total Cost
    • Reduces Number of DC-DC Regulators to Stock
    • Reduces Power Dissipation

    MAX20098
    Versatile 36V 2.2MHz Buck Controller with 3.5µA IQ

    • Meets Stringent OEM Module Power Consumption and Performance Specifications
    • Enables Crank-Ready Designs
    • EMI Reduction Features Reduce Interference with Sensitive Radio Bands without Sacrificing Wide Input Voltage Range

    MAX17633
    4.5V to 36V, 3.5A, High-Efficiency, Synchronous Step-Down DC-DC Converter

    • Reduces External Components and Total Cost
    • Reduces Number of DC-DC Regulators to Stock
    • Reduces Power Dissipation

    MAXM17903
    4.5V to 24V, 300mA Compact Step-Down Power Module

    • Easy to use
    • High Efficiency
    • Flexible Design

    MAXM15064
    4.5V to 60V, 300mA Compact Step-Down Power Module

    • Easy to use
    • High Efficiency
    • Flexible Design

    MAX77680
    3-Output SIMO Buck-Boost Regulator with Power Sequencer and 3μA IQ

    • Single-Inductor, Multiple-Output (SIMO) Extends Battery Life
    • Compact, High-Efficiency Power Solution
    • Small Size

    MAX77681
    3-Output SIMO Buck-Boost Regulator with Power Sequencer and 3μA IQ

    • Single-Inductor, Multiple-Output (SIMO) Extends Battery Life
    • Compact, High-Efficiency Power Solution
    • Small Size

    MAX20416
    2.2MHz Dual-Output, Low-Voltage Step-Down Converters

    • Multiple Functions for Small Size
    • High Precision
    • Robust for the Automotive Environment

    MAX77278
    Ultra-Low Power PMIC with 3-Output SIMO, Power Path Charger Optimized for Small Li+, 425mA Current Sink, and 8 GPIOs

    • Highly Integrated
    • Low Power
    • Charger Optimized for Small Battery Size

    MAX20471
    Low-Voltage Synchronous Boost Converter

    • Synchronous Boost Converter
    • 3.0V to 4.0V Operating Supply Voltage
    • True Output Shutdown
  • High Precision
    • ±1.5% Output-Voltage Accuracy
    • 93V ±2% Undervoltage Monitoring
    • 107V ±2% Overvoltage Monitoring
  • Robust for the Automotive Environment
    • Current-Mode Control, Forced-PWM, and Skip Operation
    • Overtemperature and Overcurrent Protection
    • 12-Pin (3mm × 3mm) TDFN

    • MAX20472
    Low-Voltage Synchronous Boost Converter

    • Synchronous Boost Converter
    • 3.0V to 4.0V Operating Supply Voltage
    • True Output Shutdown
  • High Precision
    • ±1.5% Output-Voltage Accuracy
    • 93V ±2% Undervoltage Monitoring
    • 107V ±2% Overvoltage Monitoring
  • Robust for the Automotive Environment
    • Current-Mode Control, Forced-PWM, and Skip Operation
    • Overtemperature and Overcurrent Protection
    • 12-Pin (3mm × 3mm) TDFN

    • MAX20473
    Low-Voltage Synchronous Boost Converter

    • Synchronous Boost Converter
    • 3.0V to 4.0V Operating Supply Voltage
    • True Output Shutdown
  • High Precision
    • ±1.5% Output-Voltage Accuracy
    • 93V ±2% Undervoltage Monitoring
    • 107V ±2% Overvoltage Monitoring
  • Robust for the Automotive Environment
    • Current-Mode Control, Forced-PWM, and Skip Operation
    • Overtemperature and Overcurrent Protection
    • 12-Pin (3mm × 3mm) TDFN

    • MAXM17546
    4.5V to 42V, 5A High-Efficiency, DC-DC Step-Down Power Module with Integrated Inductor

    • Reduces Design Complexity, Manufacturing Risks, and Time-to-Market
    • Saves Board Space in Space-Constrained Applications
    • Offers Flexibility for Power-Design Optimization

    MAX20019
    3.2MHz, 500mA Dual Step-Down Converters for Automotive Cameras

    • Small Solution Size
    • Cable Flexibility
    • EMI Solutions

    MAX20020
    3.2MHz, 500mA Dual Step-Down Converters for Automotive Cameras

    • Small Solution Size
    • Cable Flexibility
    • EMI Solutions

    MAX20034
    High-Efficiency 2.2MHz, 36V, Dual Buck Controller with 17μA Quiescent Current

    • Meets Stringent OEM Module Power-Consumption and Performance Specifications
    • Enables Crank-Ready Designs
    • EMI Reduction Features Reduce Interference with Sensitive Radio Bands without Sacrificing Wide Input Voltage Range

    MAX77324
    4.8VIN, 1.5A High-Efficiency, Ultra-Small Buck Converter

    • 1.5A Output Current Step-down Converter
    • 2.5V to 4.8V VIN Range
    • 0.6V to 2V Adjustable VOUT Range, ±2% Accuracy

    MAX77714
    Complete System PMIC, Featuring 13 Regulators, 8 GPIOs, RTC, and Flexible Power Sequencing for Multicore Applications

    • Highly Integrated
    • Flexible and Configurable
    • Low Power

    Tools & Models

    Technical Docs

    Reference Designs

    Type ID Title
    Evaluation Board8940MAX20751S1VKIT Evaluation Kit for the MAX20751/VT1697SB