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MAX17409

MAX17409

1-Phase Quick-PWM GPU Controller

Single-Phase Step-Down Controller

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Overview

Description

The MAX17409 is a 1-phase Quick-PWM™ step-down VID power-supply controller for high-performance graphics processors. The Quick-PWM control provides instantaneous response to fast-load current steps. Active voltage positioning reduces power dissipation and bulk output capacitance requirements and allows ideal positioning compensation for tantalum, polymer, or ceramic bulk output capacitors.

The MAX17409 is intended for two different notebook processor core applications: either bucking down the battery directly to create the core voltage, or bucking down the +5V system supply. The single-stage conversion method allows this device to directly step down high-voltage batteries for the highest possible efficiency. Alternatively, 2-stage conversion (stepping down the +5V system supply instead of the battery) at higher switching frequency provides the minimum possible physical size.

A slew-rate controller allows controlled transitions between VID codes. A thermistor-based temperature sensor provides programmable thermal protection. The MAX17409 is available in a 28-pin, 4mm x 4mm TQFN package.
MAX17409: Pin Configuration MAX17409: Pin Configuration Enlarge+

Key Features

  • 1-Phase Quick-PWM Controller
  • ±6mV VOUT Accuracy Over Line, Load, and Temperature
  • 6-Bit Graphics DAC (12.5mV LSB)
  • Active Voltage Positioning with Adjustable Gain
  • Accurate Droop and Current Limit
  • Remote Output and Ground Sense
  • Buffered 2V Reference Output for Offsets
  • Power-Good Window Comparator
  • Temperature Comparator
  • Drives Large Synchronous Rectifier FETs
  • 2V to 26V Power Input Range
  • Adjustable Switching Frequency (600kHz max)
  • Output Overvoltage and Undervoltage Protection
  • Soft-Startup and Soft-Shutdown
  • Internal Boost Diodes

Applications/Uses

  • 2- to 4-Li+ Cells Battery to Processor Core Supply Converters
  • Graphics Core (GPU) Power Supplies
  • Notebooks/Desktops/Servers
  • Voltage-Positioned Step-Down Converters

Design Resources


MAX17409EVKIT: Evaluation Kit for the MAX17409

Quality and Environmental Data

Request Reliability Report for: MAX17409 
Lead-Free Package Tin (Sn) Whisker Reports

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  • MAX17409GTI+
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    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.

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    Reference Designs

    Type ID Title
    Evaluation Board6644MAX17409EVKIT Evaluation Kit for the MAX17409