MAX20790 Datasheet

• Space-Optimized Solution
  • Monolithic, Smart Power Stage
  • Phase-Current Steering for Thermal Balance
  • Small Footprint: ~24mm²
• 95.6% Peak Efficiency
  • 6-phase, 400kHz, 12V V_IN, 1.8V V_OUT
• 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

• 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

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).