MAX15303

6A Digital PoL DC-DC Converter with InTune Automatic Compensation

6A InTune Automatically Compensated Converter with PMBus Telemetry


Please check latest availability status for a specific part variant.

Description

The MAX15303 is a full-featured, flexible, efficient, 6A digital point-of-load (PoL) controller with integrated switching MOSFETs. It contains advanced power-management and telemetry features. Unlike PID-based digital power regulators, the device 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 duty-cycle saturation effects. These capabilities result in fast loop transient response and reduce the number of output capacitors compared to competing digital controllers.

To help maximize system efficiency and reduce overall parts count, the device uses Maxim’s BabyBuck regulator. The BabyBuck eliminates the need for an external bias supply. The BabyBuck can be configured in two different modes to maximize system flexibility.

The device is designed to minimize the end customer’s design time. Automatic compensation eliminates the need for external compensation circuitry and allows changes to the output inductor and capacitor, without the need to manually redesign the compensation circuitry. 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 through 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 device.

The MAX15303 is available in a 40-pin, 6mm × 6mm TQFN package with an exposed pad and operates over the -40°C to +85°C temperature range.

MAX15303: Functional Diagram MAX15303: Functional Diagram Enlarge+

Key Features

  • InTune Automatic Compensation Simplifies and Speeds Design
    • Ensures Stability While Optimizing Transient Performance
    • State-Space Compensation Results in Fast Transient Response with Reduced Output Capacitance
  • Out-of-the-Box Operation Enables Fast Prototyping
    • Supports Pin-Strappable Configuration: Output Voltage, SMBus Address, Switching Frequency, Current Limit
  • Easy to Use PMBus Interface for Configuration, Control, and Monitoring
    • Flexible Sequencing and Fault Management
    • Supports Voltage Positioning
    • Configurable Soft-Start and Soft-Stop Time
    • 300kHz to 1000kHz Fixed-Frequency Operation
  • Integration Yields Small Solution Size
    • Integrated High- and Low-Side MOSFETs
    • Efficient On-Chip BabyBuck Regulator for Self-Bias Output
    • Startup into a Prebiased Output
  • Performance Optimized for Communication and Computing Systems
    • Differential Remote Voltage Sensing Enables ±1.25% VOUT Accuracy over Temperature (-40°C to +85°C)
    • 4.5V to 14V Wide Input Range
    • Output Voltage Range from 0.5V to 5.25V
    • External Synchronization

Applications/Uses

  • Base-Station Equipment
  • Power Modules
  • Routers/Switches
  • Servers
  • Storage Systems
Part NumberVIN
(V)
VIN
(V)
VOUT1
(V)
VOUT1
(V)
Preset VOUT
(V)
Output Adjust. MethodIOUT1
(A)
Switch TypeSynchronous SwitchingPower Good SignalDC-DC OutputsOper. Freq.
(kHz)
Package/PinsBudgetary
Price
minmaxminmaxSee Notes
MAX15303 4.5140.55.25
0.7
0.8
0.85
0.9
0.95
0.6
0.75
1
1.05
1.1
1.2
1.5
1.8
2.5
3.3
5
Digital/VID
Resistor
6InternalYesYes11000
TQFN/40
$3.54 @1k
See All Step-Down Switching Regulators (362)
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.


MAX15303EVKIT1: Evaluation Kit for the MAX15303

Technical Documents

User Guide 5981 PowerTool MAXPOWERTOOL002# Quick Start Guide
User Guide 5861 EE-SIM Design and Simulation Environment User Guide
User Guide 5816 MAX15303 PMBus Command Set User’s Guide
App Note 5601 Current Calibration Procedure for InTune Digital Power

Quality and Environmental Data

Product Reliability Reports: MAX15303.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.
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 >

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