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Smart Power-Stage IC with Integrated Current and Temperature Sensors

Single-Phase Monolithic Smart Slave IC with Best-in-Class Efficiency and High Current Density

Product Details

Key Features

Parametric specs for Step-Down Switching Regulators
VIN (V) (min) 4.5
VIN (V) (max) 16
VOUT1 (V) (min) 0.25
Switch Type Internal
Preset VOUT (V) 0.8
Output Adjust. Method Digital/VID
Synchronous Switching? Yes
Power Good Signal Yes
# DC-DC Outputs 2
Switching Frequency (kHz) 400
Package/Pins FC2QFN/12
Budgetary
Price (See Notes)
9.63
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Simplified Block Diagram

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Parameters

Parametric specs for Step-Down Switching Regulators
VIN (V) (min) 4.5
VIN (V) (max) 16
VOUT1 (V) (min) 0.25
Switch Type Internal
Preset VOUT (V) 0.8
Output Adjust. Method Digital/VID
Synchronous Switching? Yes
Power Good Signal Yes
# DC-DC Outputs 2
Switching Frequency (kHz) 400
Package/Pins FC2QFN/12
Budgetary
Price (See Notes)
9.63

Key Features

  • Space-Optimized Solution
    • Monolithic, Smart Power Stage
    • Phase-Current Steering for Thermal Balance
    • Small Footprint: ~24mm2
  • 95.6% Peak Efficiency
    • 6-phase, 400kHz, 12V VIN, 1.8V VOUT
  • 300kHz to 1.3MHz Switching Frequency
  • Telemetry and Fault Reporting through Controller IC PMBus
    • Accurate Temperature Monitoring and Reporting
    • Accurate Per-Phase Current Reporting
    • Fault_ID Indicates Type of Fault
  • Advanced Self-Protection Features
    • Supply and Boost UVLO Protection
    • Boost Refresh
    • VX Short and Overtemperature Shutdown
    • Fast Overcurrent Protection

Applications/Uses

  • High Current Multiphase-Voltage Regulators
  • - Networking ASICs
  • - AI and Machine Learning ASICs
  • - Graphics Processors
  • Servers, Workstations, and Enterprise Storage
  • Communications and Networking Equipment
  • AI and Machine Learning

Description

The MAX20790 is a feature-rich smart power-stage IC designed to work with Maxim’s controllers to implement a high-density multiphase voltage regulator. Multiple smart power-stage ICs plus a controller provide a compact synchronous buck converter that includes accurate individual phase current and temperature reporting through PMBus™. These smart power-stage devices include fault-protection circuits for overtemperature, VX short, and supply undervoltage lockout (UVLO). The MAX20790 immediately shuts down on fault detection, communicating the Fault_ID to the controller.


Monolithic integration and advanced packaging technology allow high-switching frequencies with significantly lower losses than conventional implementations. Phase-shedding and discontinuous conduction modes (DCM) optimize efficiency over a wide range of load currents.


The MAX20790 is available in a 12-pin FC2QFN package with an exposed top-side thermal pad (3.25mm x 7.4mm).

Simplified Block Diagram

Technical Docs

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 .