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

Parametric 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 (363)
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 V2.28.00  
    Digital PowerTool Software V2.30.00  
    Digital PowerTool Software V2.31.00  
    Digital PowerTool Software V2.32.00  

    CAD Symbols and Footprints

  • MAX20751EKX+
  • MAX20751EKX+T
    •

    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

     
    Status:
    Package:
    Temperature:

    Related Resources

    Related Products

    New Products


    MAX20049
    Flexible, Compact Quad Power Supply with 2.2MHz, 500mA Buck Converters and Dual LDOs for Automotive Camera Modules

    • Small Solution Size
    • EMI Solutions
    • Self-Protected and Robust

    MAX17673
    Integrated 4.5V to 60V Synchronous 1.5A HV Buck and Dual 2.7V to 5.5V, 1A Buck Regulators

    • Reduces External Components and Total Cost
    • Integrates Three DC-DC Regulators
    • Reduces Power Dissipation

    MAX77813
    High-Efficiency Buck-Boost Converter

    • VIN Range: 2.30V to 5.5V
    • VOUT Range: 2.60V to 5.14V (I2C Programmable in 20mV Step)
    • Up to 2A Output Current in Boost Mode (VIN = 3.0V, VOUT = 3.4V, ILIM = High)

    MAX38643
    Tiny 1.8V–5.5V Input, 330nA IQ, 700mA nanoPower Buck Converter

    • Extends Battery Life
    • Easy to Use – Addresses Popular Operation
    • Protects System in Multiple Use Cases

    MAX38641
    Tiny 1.8V–5.5V Input, 330nA IQ, 700mA nanoPower Buck Converter

    • Extends Battery Life
    • Easy to Use – Addresses Popular Operation
    • Protects System in Multiple Use Cases

    MAX38642
    Tiny 1.8V–5.5V Input, 330nA IQ, 700mA nanoPower Buck Converter

    • Extends Battery Life
    • Easy to Use – Addresses Popular Operation
    • Protects System in Multiple Use Cases

    MAX38640A
    Tiny 1.8V–5.5V Input, 330nA IQ, 700mA nanoPower Buck Converter

    • Extends Battery Life
    • Easy to Use – Addresses Popular Operation
    • Protects System in Multiple Use Cases

    MAX5995A
    IEEE 802.3bt-Compliant, Powered Device Interface Controllers with Integrated 91W High-Power MOSFET

    • IEEE 802.3af/at/bt Compliant
    • Type 1~4 PSE Classification Indicator or an External Wall Adapter Indicator Output
    • Simplified Wall Adapter Interface

    MAX5995B
    IEEE 802.3bt-Compliant, Powered Device Interface Controllers with Integrated 91W High-Power MOSFET

    • IEEE 802.3af/at/bt Compliant
    • Type 1~4 PSE Classification Indicator or an External Wall Adapter Indicator Output
    • Simplified Wall Adapter Interface

    MAX5995C
    IEEE 802.3bt-Compliant, Powered Device Interface Controllers with Integrated 91W High-Power MOSFET

    • IEEE 802.3af/at/bt Compliant
    • Type 1~4 PSE Classification Indicator or an External Wall Adapter Indicator Output
    • Simplified Wall Adapter Interface

    MAX38903A
    1.7V–5.5VIN, 1A Low Noise LDO Linear Regulators in TDFN and WLP

    • Delivers Flexible Operating Range
    • Reduces Noise and Improves Accuracy
    • Enables Ease-of-Use and Robust Protection

    MAX38903B
    1.7V–5.5VIN, 1A Low Noise LDO Linear Regulators in TDFN and WLP

    • Delivers Flexible Operating Range
    • Reduces Noise and Improves Accuracy
    • Enables Ease-of-Use and Robust Protection

    MAX38903C
    1.7V–5.5VIN, 1A Low Noise LDO Linear Regulators in TDFN and WLP

    • Delivers Flexible Operating Range
    • Reduces Noise and Improves Accuracy
    • Enables Ease-of-Use and Robust Protection

    MAX38903D
    1.7V–5.5VIN, 1A Low Noise LDO Linear Regulators in TDFN and WLP

    • Delivers Flexible Operating Range
    • Reduces Noise and Improves Accuracy
    • Enables Ease-of-Use and Robust Protection

    MAX20004
    36V, 220kHz to 2.2MHz, 4A/6A/8A Fully Integrated Step-Down Converters

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

    MAX20008
    36V, 220kHz to 2.2MHz, 4A/6A/8A Fully Integrated Step-Down Converters

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

    MAX20006
    36V, 220kHz to 2.2MHz, 4A/6A/8A Fully Integrated Step-Down Converters

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

    MAX20077
    36V, 2.5A Mini Buck Converter with 3.5uA IQ

    • Synchronous DC-DC Converter with Integrated FETs
    • Small Solution Size Saves Space
    • PGOOD Output and High-Voltage EN Input Simplify Power Sequencing

    MAX25277
    36V, 2.5A Mini Buck Converter with 3.5uA IQ

    • Synchronous DC-DC Converter with Integrated FETs
    • Small Solution Size Saves Space
    • PGOOD Output and High-Voltage EN Input Simplify Power Sequencing

    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

    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

    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

    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

    Tools & Models

    Technical Docs

    Reference Designs

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