MAX15301

InTune Automatically Compensated Digital PoL Controller with Driver and PMBus Telemetry

Only Digital Power IC To Meet Transient and Light-Load Efficiency Performance Metrics Set by Analog Controllers


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Description

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The MAX15301 is a full-featured, highly efficient, digital point-of-load (PoL) controller with advanced power management and telemetry features. Unlike PID-based digital power regulators, the MAX15301 uses Maxim’s patented InTune automatically compensated, state-space control algorithm. The InTune control law is valid for both the small- and large-signal response and accounts for dutycycle saturation effects. These capabilities result in fast loop transient response and reduce the number of output capacitors compared to competing digital controllers.

The MAX15301 includes multiple features to optimize efficiency. An internal switch BabyBuck regulator generates the gate drive and the internal bias supplies for the controller with low power loss. An advanced, high-efficiency MOSFET gate driver has adjustable nonoverlap timing and load-variable gate-drive voltage to minimize switching losses over the full range of voltage, current, and temperature.

The MAX15301 was designed for end-customer’s design environment. An on-board PMBus-compliant serial bus interface enables communication with a supervisory controller for monitoring and fault management. A full suite of power management features eliminates the need for complicated and expensive sequencing and monitoring ICs. Basic DC-DC conversion operation can be set up via pin strapping and does not require user configuration firmware. This allows for rapid development of the power-supply subsystem before board-level systems engineering is completed. Maxim provides support hardware and software for configuring the MAX15301.

The MAX15301 is available in a 32-lead, 5mm x 5mm TQFN package and operates over the -40°C to +85°C temperature range.

MAX15301: Typical Operating Circuit MAX15301: Typical Operating Circuit Enlarge+

Key Features

  • InTune Automatic Compensation Ensures Stability While Optimizing Transient Performance
  • State-Space Compensation Results in Fast Transient Response with Reduced Output Capacitance
  • Differential Remote Voltage Sensing Enables ±1% VOUT Accuracy over Temperature (-40°C to +85°C)
  • PMBus Interface for Configuration, Control, and Monitoring
  • Supports Voltage Positioning
  • High Output 2A/4A MOSFET Driver
    • Adjustable Nonoverlap Timing
    • Variable Gate-Drive Voltage
  • Wide Input Range of 4.5V to 14V
  • Efficient On-Chip BabyBuck Regulator for Self-Bias
  • Output Voltage Range from 0.5V to 5.25V
  • Startup into a Prebiased Output
  • Configurable Soft-Start and Soft-Stop Time
  • Fixed-Frequency Operation and Synchronization
  • Flexible Sequencing and Fault Management
  • Pin-Strappable Configuration
    • Output Voltage, SMBus Address, Switching Frequency, Current Limit
  • Out-of-the-Box Operation Enables Fast Prototyping

Applications/Uses

  • Base-Station Equipment
  • Graphic Cards
  • Power Modules
  • Routers/Switches
  • Servers
  • Storage Systems

MAX15301EVKITHP: Evaluation Kit for the MAX15301AA02
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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