MAXIM INTEGRATED

Maxim Integrated VT1697SB Smart Slave IC with Integrated Current and Temperature Sensors

Maxim Integrated VT1697SB Smart Slave IC with Integrated Current and Temperature Sensors

Maxim Integrated VT1697SB is a feature-rich smart slave IC designed to work with Maxim's seventh-generation masters to implement a high density multiphase voltage regulator. Up to six smart slave ICs, plus a master IC, provide a compact synchronous buck converter that includes accurate individual phase-current and temperature reporting via SMBus/PMBus. This smart slave device includes protection circuits for overtemperature, VX short, all power supplies UVLO faults and main power supply OVLO fault. If a fault is detected, the slave IC will immediately shut down and send a fault signal to the master IC. Monolithic integration and advanced packaging technologies allow practical per-phase, high switching frequencies with significantly lower losses than alternative implementations. Smart slave devices are designed to support phase-shedding and DCM modes for efficiency optimization over a wide range of load currents. High per-phase current-capability designs with low COUT enable a design with fewer phases and a smaller footprint. The VT1697SB is packaged in a QFN package with exposed topside thermal pads. Top-side cooling allows improved heat transfer to ambient and reduces PC board and component temperatures.

Features and Benefits

  • Increased Power Density with Fewer External Components

    • Monolithic Integration For Reduced Parasitics

    • 4-Phase Scalable Architecture Compatible with Coupled Inductors

    • 94% Peak Efficiency

    • Top-Side Cooling For Improved Heat Transfer To Ambient

  • Accurate Telemetry and Monitoring Provides Real-Time Reporting of Critical Parameters

    • PMBus Compliant Interface via Master Controller for Telemetry and Power Management

    • Junction Temperature Monitoring & Reporting

    • Per-Phase Current Reporting

  • Advanced Self-Protection Features Protects System and IC

    • Overcurrent Protection

    • Overtemperature Protection

    • Boost Voltage UVLO

    • VX Short Protection

Applications

  • Communication and Networking Equipment

  • Servers and Storage Equipment

  • High-Current Voltage Regulators

  • Networking ASICs

  • FPGAs

  • Microprocessor Chipsets

  • Memory

Basic Application Circuit
Basic Application Circuit

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