MAX15157D

PRODUCTION

60V Current-Mode Buck Controller with Lossless Current Sense

Achieve High-Voltage KW Designs with Highest Efficiency and Density with Industry's First HV-Coupled Buck

Data Sheet (Rev. 1)
Product Selection Table
Viewing:

Overview

  • Wide Operating Range Reduces Development Time
    • 8V to 60V Input Voltage Range
    • 3V to 0.95 × VIN Output Voltage Range
    • 60kHz to 1MHz Switching Frequency Range
    • Interleaved 1/2/3/4/6/8-Phase Operation
    • -40°C to +125°C Temperature Range
  • Integration Reduces Design Footprint
    • Internal LDO for Bias Supply Generation
    • Synchronization Input
    • Current Monitor Output
    • Internal 2V Precision Reference
    • 2Ω Pullup and 0.6Ω Pulldown Fast Power FET Drivers
    • Accurate MOSFET Dead Time Adaptive Control
  • Robust Fault Protection Improves Quality and Simplifies System Design
    • Adjustable Input Undervoltage Lockout
    • Adjustable Input EN
    • Adjustable Cycle-by-Cycle OvercurrentProtection
    • Input Undervoltage Fault Protection
    • Multiple Levels of Overvoltage Protection
    • Thermal Shutdown
  • Flexible, Simple System Design
    • Adjustable Slope Compensation
    • Discrete Inductor or Compact Coupled Inductor Architecture
    • Lossless RDSON or Resistor Current Sensing
  • Small 5mm × 5mm, 32-Pin TQFN, 0.5mm Pitch

    • The MAX15157D is the evolution of the MAX15157B HV buck controller family. The MAX15157D implements a single-phase, PWM valley current-mode controller and drives two external power MOSFETs in a buck configuration. The output voltage can be dynamically set through the 1V to 2.2V reference input (REFIN) for modular design support.

    The switching frequency is controlled either through external resistor that sets the internal oscillator, or by synchronizing the regulator to an external clock. The device is designed to support 60kHz to 1MHz switching frequencies. The controller has a dedicated undervoltage lockout pin (UVLO) and an accurate enable input threshold for flexible power sequence configuration. The controller also has multiple fault-protection circuits to protect against overcurrent (OCP) adjustable through the ILIM pin, output overvoltage (OVP), input undervoltage (UVLO), and thermal shutdown.

    The MAX15157D features an adjustable internal compensation ramp. The device incorporates an accurate current-sense amplifier that reports output current through an analog output (IMON).

    The MAX15157D features lossless LS FET RDSON or resistor current sensing. The device allows programmable single-phase or multiphase operation, up to eight interleaved phases, and implements an accurate current balance scheme. The MAX15157D can operate with either discrete inductors or coupled inductors in case of multiphase operation.

    The device is available in a 5mm × 5mm, 32-pin TQFN package and supports a -40°C to +125°C junction temperature range.

    Applications

    • Data Center
    • Industrial
    • Multiphase Buck
    MAX15157D
    60V Current-Mode Buck Controller with Lossless Current Sense
    MAX15157D: Typical Application Circuit
    Add to myAnalog

    Add product to the Products section of myAnalog (to receive notifications), to an existing project or to a new project.

    Create New Project
    Ask a Question

    Documentation

    Data Sheet 1

    Learn More
    Add to myAnalog

    Add media to the Resources section of myAnalog, to an existing project or to a new project.

    Create New Project

    Software Resources

    Can't find the software or driver you need?

    Request a Driver/Software

    Evaluation Kits

    eval board
    schematic 1
    MAX15157DEVKIT

    Evaluation Kit for the MAX15157D

    Buy Now View Details

    Features and Benefits

    • 40V to 60V Input Voltage Range (Configurable from 8V to 60V)
    • 12V Output Voltage (Configurable from 3V to 0.95 × VIN)
    • Adjustable Slope Compensation Ramp
    • Multiphase Operation up to 8 Phases
    • Adjustable 60kHz to 1MHz Switching Frequency
    • External Switching Frequency Clock Synchronization
    • External REFIN Input for Output Adjustment
    • Hiccup Fault Protection for Overcurrent and Thermal Shutdown
    • PGOOD Output (Power-Good Output)
    • Adjustable Input UVLO and Output OVP Voltage
    • Adjustable Soft-Start
    • Monotonic Startup into Prebiased Output

    Product Details

    The MAX15157D evaluation kit (EV kit) is a fully assembled and tested circuit board that contains all of the components necessary to evaluate the performance of the MAX15157D high-efficiency step-down regulator. The EV kit is powered from a 40V to 60V DC supply. It is capable of delivering 12V/20A output at a 150kHz switching frequency. Refer to the MAX15157D data sheet to set the switching frequency and input/output voltage ranges for the EV kit.

    Applications

    • Automotive
    • Datacenter
    • Industrial
    • Multiphase Buck
    MAX15157DEVKIT
    Evaluation Kit for the MAX15157D
    MAX15157DEVKIT: Board Photo

    Latest Discussions

    No discussions on MAX15157D yet. Have something to say?

    Start a Discussion on EngineerZone®

    Recently Viewed