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Integrated, Step-Down Switching Regulator with PMBus

Monolithically Integrated, PMBus-Enabled Step-Down Switching Regulator with High-Power Density and Low Component Count

Product Details

The MAX20710 is a fully integrated, highly efficient switching regulator with PMBus™ for applications operating from 4.5V to 16V and requiring up to 10A (max) load. This single-chip regulator provides extremely compact, highefficiency power-delivery solutions with high-precision output voltages and excellent transient response for networking, datacom, and telecom equipment.

The IC offers a broad range of programmable features through either the PMBus or a capacitor and resistor connected to a dedicated programming pin. Using this feature, the operation can be optimized for a specific application, reducing the component count and/or setting appropriate trade-offs between the regulator’s performance and system cost. Ease of programming enables using the same design for multiple applications.

The IC includes protection and telemetry features. Positive and negative cycle-by-cycle overcurrent protection and overtemperature protection ensure a rugged design. Input undervoltage lockout shuts down the device to prevent operation when the input voltage is out of specification. A status pin provides an output signal to show that the output voltage is within range and the system is regulating.

Key Features

  • High Power Density and Low Component Count
    • Overall Solution Size 509mm2 Including Inductor and Output Capacitors
    • 90.8% Peak Efficiency with VDDH = 12V and VOUT = 1V
    • Fast Transient Response: Supports Up to 300A/µs Load-Step Transients
  • Optimized Component Performance and Efficiency with Reduced Design-In Time
    • PMBus-Compliant Interface for Telemetry andPower Management
    • Voltage, Current, and Temperature Reporting through the Digital Bus
  • Increased Power-Supply Reliability with System and IC Self-Protection Features
    • Differential Remote Sense with Open-Circuit Detection
    • Hiccup Overcurrent Protection
    • Programmable Thermal Shutdown

Applications/Uses

  • Communications Equipment
  • I/O
  • Memory VDDQ
  • Networking Equipment
  • Point-of-Load Voltage Regulators
  • Servers and Storage Equipment
  • μP Chipsets
Parametric specs for Step-Down (Buck) Switching Regulators
VIN (V) (min) 4.5
VIN (V) (max) 16
VOUT1 (V) (min) 0.6
VOUT1 (V) (max) 5.5
IOUT1 (A) (max) 10
Switch Type Internal
Output Adjust. Method Preset
Resistor
Synchronous Switching? Yes
Power Good Signal Yes
# DC-DC Outputs 1
Switching Frequency (kHz) 800
Design Tools EE-Sim
Package/Pins FCQFN/15
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Simplified Block Diagram

MAX20710: Block Diagram MAX20710: Block Diagram Zoom icon

Technical Docs

Design & Development

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Description

The MAX20710 Evaluation Kit (EV kit) serves as a reference platform for evaluating the MAX20710 voltage-regulator IC. This single-chip, integrated switching regulator provides an extremely compact, low-cost, highly efficient, fast, accurate, and reliable power-delivery solution for emerging low-output voltage applications up to 10A. Refer to the MAX20710 IC data sheet for more information.

The EV kit comprises a fully-assembled and tested PCB implementation of the MAX20710. Jumper pins, test points, and input/output connectors are included for flexibility and ease-of-use in a wide range of applications.

The evaluation board is configured with an edge strip to allow high di/dt loading when evaluating the system. The +VOUT connection is on the top side, while the return (or -VOUT) is on the bottom side, 1) directly mirroring the top-side strip. Either solder the load devices directly to the output strip or use the J8 terminal block to interface to a load.

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Features

  • High Efficiency and Power Density
  • Low Component Count
  • Small Solution Size
    • 509mm2 Including Inductor and Output Capacitors
  • Optimized Performance
  • Reduced Design-In Time
  • Interfaces to Maxim PMBus™ Dongle and PowerToolTM GUI
  • Proven PCB Layout
  • Fully Assembled and Tested

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    EE-Sim: Design & Simulate MAX20710

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    Parameters

    Parametric specs for Step-Down (Buck) Switching Regulators
    VIN (V) (min) 4.5
    VIN (V) (max) 16
    VOUT1 (V) (min) 0.6
    VOUT1 (V) (max) 5.5
    IOUT1 (A) (max) 10
    Switch Type Internal
    Output Adjust. Method Preset
    Resistor
    Synchronous Switching? Yes
    Power Good Signal Yes
    # DC-DC Outputs 1
    Switching Frequency (kHz) 800
    Design Tools EE-Sim
    Package/Pins FCQFN/15

    Key Features

    • High Power Density and Low Component Count
      • Overall Solution Size 509mm2 Including Inductor and Output Capacitors
      • 90.8% Peak Efficiency with VDDH = 12V and VOUT = 1V
      • Fast Transient Response: Supports Up to 300A/µs Load-Step Transients
    • Optimized Component Performance and Efficiency with Reduced Design-In Time
      • PMBus-Compliant Interface for Telemetry andPower Management
      • Voltage, Current, and Temperature Reporting through the Digital Bus
    • Increased Power-Supply Reliability with System and IC Self-Protection Features
      • Differential Remote Sense with Open-Circuit Detection
      • Hiccup Overcurrent Protection
      • Programmable Thermal Shutdown

    Applications/Uses

    • Communications Equipment
    • I/O
    • Memory VDDQ
    • Networking Equipment
    • Point-of-Load Voltage Regulators
    • Servers and Storage Equipment
    • μP Chipsets

    Description

    The MAX20710 is a fully integrated, highly efficient switching regulator with PMBus™ for applications operating from 4.5V to 16V and requiring up to 10A (max) load. This single-chip regulator provides extremely compact, highefficiency power-delivery solutions with high-precision output voltages and excellent transient response for networking, datacom, and telecom equipment.

    The IC offers a broad range of programmable features through either the PMBus or a capacitor and resistor connected to a dedicated programming pin. Using this feature, the operation can be optimized for a specific application, reducing the component count and/or setting appropriate trade-offs between the regulator’s performance and system cost. Ease of programming enables using the same design for multiple applications.

    The IC includes protection and telemetry features. Positive and negative cycle-by-cycle overcurrent protection and overtemperature protection ensure a rugged design. Input undervoltage lockout shuts down the device to prevent operation when the input voltage is out of specification. A status pin provides an output signal to show that the output voltage is within range and the system is regulating.

    Simplified Block Diagram

    MAX20710: Block Diagram MAX20710: Block Diagram Zoom icon

    Technical Docs

    Support & Training

    Search our knowledge base for answers to your technical questions.

    Filtered Search

    Our dedicated team of Applications Engineers are also available to answer your technical questions. Visit our support portal.