Top

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

Product Details

The MAX15301AA02 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 MAX15301AA02 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.

The MAX15301AA02 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 MAX15301AA02 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 IC.

The MAX15301AA02 is available in a 32-lead, 5mm x 5mm TQFN package and operates over the -40°C to +85°C temperature range.

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
  • Power Modules
  • Routers/Switches
  • Servers
  • Storage Systems
Parametric specs for Step-Down Switching Regulators
VIN (V) (min) 4.5
VIN (V) (max) 14
VOUT1 (V) (min) 0.5
VOUT1 (V) (max) 5.25
IOUT1 (A) (max) 40
Switch Type External
Preset VOUT (V) 1
5
Output Adjust. Method Digital/VID
Resistor
Synchronous Switching? Yes
Power Good Signal Yes
# DC-DC Outputs 1
Switching Frequency (kHz) 1000
Package/Pins SOIC(N)/8
Budgetary
Price (See Notes)
$3.54 @1k
View More

Simplified Block Diagram

MAX15301AA02: Typical Operating Circuit MAX15301AA02: Typical Operating Circuit Zoom icon

Design & Development

Click any title below to view the detail page where available.

Additional Resources
The EV kit requires the use of the MAXPOWERTOOL002# which is not included and must be purchased separately.

Description

The MAX15301 evaluation kit (EV kit) is a proven application circuit design for the MAX15301 digital DC-DC controller integrated circuit (IC). The EV kit allows the user to easily modify and test the EV kit with different operating conditions. The EV kit can be used as a standalone board if desired. However, to take full advantage of the IC’s capability, the user must connect the EV kit to a PC with the Maxim PowerTool MAXPOWERTOOL002# USB-to-PMBus interface dongle and then control and monitor the EV kit with Maxim’s digital PowerTool graphical user interface (GUI) software. The PowerTool GUI allows a PC to control the PMBus interface and to collect real-time data from the EV kit. The PowerTool is Windows XP®, Windows Vista®, and Windows®7 compatible. It provides a simple interface for exercising the features of the IC.

The EV kit ships with the MAX15301AA02+CJK installed, but can also be used to evaluate other pin-compatible MAX15301xxxx ICs with replacement of U1. Request a free sample when ordering the EV kit.

View Details

Features

  • InTune Digital Point-of-Load (PoL) Switched-Mode Power Supply (SMPS) Controller
    • Digital State-Space Control
    • Dual-Edge-Modulated Pulse-Width Modulation (PWM)
    • 300kHz to 1MHz Switching Frequency
    • 5V to 14V Input Voltage Range Using Linear Mode
    • 6.5V to 14V Input Voltage Range Using BabyBuck Mode
    • 0.6V to 3.3V Output Voltage Range
    • 25A Output Current Capability
  • Pin-Strap or PMBus Configuration
  • SMB Connectors for Low-Noise Measurements
  • Connectors for Multiple-Rail Evaluation
  • PMBus Interface for Control and Monitoring

The EV kit requires the use of the MAXPOWERTOOL002# which is not included and must be purchased separately.

The EV kit requires the use of the MAXPOWERTOOL002# which is not included and must be purchased separately.
/en/design/design-tools/ee-sim.html?

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

Parameters

Parametric specs for Step-Down Switching Regulators
VIN (V) (min) 4.5
VIN (V) (max) 14
VOUT1 (V) (min) 0.5
VOUT1 (V) (max) 5.25
IOUT1 (A) (max) 40
Switch Type External
Preset VOUT (V) 1
5
Output Adjust. Method Digital/VID
Resistor
Synchronous Switching? Yes
Power Good Signal Yes
# DC-DC Outputs 1
Switching Frequency (kHz) 1000
Package/Pins SOIC(N)/8
Budgetary
Price (See Notes)
$3.54 @1k

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
  • Power Modules
  • Routers/Switches
  • Servers
  • Storage Systems

Description

The MAX15301AA02 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 MAX15301AA02 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.

The MAX15301AA02 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 MAX15301AA02 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 IC.

The MAX15301AA02 is available in a 32-lead, 5mm x 5mm TQFN package and operates over the -40°C to +85°C temperature range.

Simplified Block Diagram

MAX15301AA02: Typical Operating Circuit MAX15301AA02: Typical Operating Circuit Zoom icon

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