MAX20845B

预发布

4x5 Smart Power-Stage IC with Integrated Current and Temperature Sensors

数据手册 (Rev. 0) 产品选型表
产品技术资料帮助

ADI公司所提供的资料均视为准确、可靠。但本公司不为用户在应用过程中侵犯任何专利权或第三方权利承担任何责任。技术指标的修改不再另行通知。本公司既没有含蓄的允许，也不允许借用ADI公司的专利或专利权的名义。本文出现的商标和注册商标所有权分别属于相应的公司。
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概述

  • Space-Optimized Solution
    • Monolithic, Smart Power Stage
    • Integrated VCC and VDD Capacitors
    • Phase-Current Steering for Thermal Balance
    • Small Footprint: 20mm2
  • Peak Efficiency 1-Phase, 600kHz, 12V VIN
    • 92.4% at 1V VOUT
    • 95% at 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
    • Input Supply OVLO Protection
    • Boost Refresh
    • VX Short and Overtemperature Shutdown
    • VX Open and Short Detection at Power-up
    • Fast Overcurrent Protection
    • Inductor Saturation Protection
    • Open/Short Pin Detection during Startup
  • *Protection features vary with different part variants

The MAX20844B/MAX20845B is a feature-rich smart power-stage IC designed to work with Analog Devices 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, I/O open/short, supply undervoltage lockout (UVLO), and main power-supply overvoltage lockout (OVLO). The MAX20844B/ MAX20845B immediately shut 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 MAX20845B integrates an internal LDO simplifying bias generation for applications that do not have 1.8V available.

The MAX20844B/MAX20845B are available in a 30-pin FCLGA package thermal pad (4mm x 5mm).

APPLICATIONS

  • Mid-Current Voltage Regulators
    • VR13, VR13.HC, and VR14 CPU Low-Power Rails
    • AI, GPUs Auxiliary Rails
  • Servers, Workstations, and Enterprise Storage
  • Communications and Networking Equipment
MAX20845B
4x5 Smart Power-Stage IC with Integrated Current and Temperature Sensors
MAX20845B Typical Operating Circuit
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数据手册 1

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