Benutzerhandbuch für Texas Instruments Evaluation Board for the LM25066I LM25066I-EVM/NOPB

Inhaltsverzeichnis

• FEATURES

  1
• APPLICATIONS

  1
• DESCRIPTION

  1
  • Typical Application Schematic

    2
  • Connection Diagram

    2
• Absolute Maximum Ratings

  4
• Operating Ratings

  4
• Electrical Characteristics

  4
• Typical Performance Characteristics

  8
• Block Diagram

  13
• Functional Description

  14
  • Power Up Sequence

    14
  • Gate Control

    16
  • Current Limit

    16
  • Circuit Breaker

    16
  • Power Limit

    16
  • Fault Timer and Restart

    17
  • Under-Voltage Lockout (UVLO)

    18
  • Over-Voltage Lockout (OVLO)

    18
  • Shutdown Control

    18
  • Power Good

    18
  • VDD Sub-Regulator

    19
  • Remote Temperature Sensing

    19
  • Damaged MOSFET Detection

    19
  • Enabling, Disabling, and Resetting

    19
• Applications Section

  21
  • • DESIGN-IN PROCEDURE

      21
    • MOSFET SELECTION

      21
    • CURRENT LIMIT (RS)

      22
    • POWER LIMIT THRESHOLD

      23
    • TURN-ON TIME

      23
    • TIMER CAPACITOR, CT

      24
    • UVLO, OVLO

      25
    • POWER GOOD

      28
    • SYSTEM CONSIDERATIONS

      29
    • PC BOARD GUIDELINES

      30
  • PMBus™ Command Support

    31
  • Standard PMBus™ Commands

    33
  • Manufacturer Specific PMBus™ Commands

    40
  • Reading and Writing Telemetry Data and Warning Thresholds

    48
  • Determining Telemetry Coefficients Empirically with Linear Fit

    49
  • Writing Telemetry Data

    50
  • PMBus™ Address Lines (ADR0, ADR1, ADR2)

    50
  • SMBus Communications Timing Requirements

    51
  • SMBA Response

    52
• Revision History

  53
• Page 1

  58