ZHCSLD3B May   2020  – December 2023 TPS566231 , TPS566238

PRODUCTION DATA  

  1.   1
  2. 1 特性
  3. 2 应用
  4. 3 说明
  5. 4 Pin Configuration and Functions
  6. 5 Specifications
    1. 5.1 Absolute Maximum Ratings
    2. 5.2 ESD Ratings
    3. 5.3 Recommended Operating Conditions
    4. 5.4 Thermal Information
    5. 5.5 Electrical Characteristics
    6. 5.6 Typical Characteristics
  7. 6 Detailed Description
    1. 6.1 Overview
    2. 6.2 Functional Block Diagram
    3. 6.3 Feature Description
      1. 6.3.1 PWM Operation and D-CAP3™ Control Mode
      2. 6.3.2 Soft Start
      3. 6.3.3 Power Good
      4. 6.3.4 Large Duty Operation
      5. 6.3.5 Overcurrent Protection and Undervoltage Protection
      6. 6.3.6 Overvoltage Protection
      7. 6.3.7 UVLO Protection
      8. 6.3.8 Output Voltage Discharge
      9. 6.3.9 Thermal Shutdown
    4. 6.4 Device Functional Modes
      1. 6.4.1 Advanced Eco-mode Control
      2. 6.4.2 Force CCM Mode
      3. 6.4.3 Standby Operation
  8. 7 Application and Implementation
    1. 7.1 Application Information
    2. 7.2 Typical Application
      1. 7.2.1 Design Requirements
      2. 7.2.2 Detailed Design Procedure
        1. 7.2.2.1 Custom Design with WEBENCH® Tools
        2. 7.2.2.2 Output Voltage Setpoint
        3. 7.2.2.3 Inductor Selection
        4. 7.2.2.4 Output Capacitor Selection
        5. 7.2.2.5 Input Capacitor Selection
      3. 7.2.3 Application Curves
    3. 7.3 Power Supply Recommendations
    4. 7.4 Layout
      1. 7.4.1 Layout Guidelines
      2. 7.4.2 Layout Example
  9. 8 Device and Documentation Support
    1. 8.1 Device Support
      1. 8.1.1 Development Support
        1. 8.1.1.1 Custom Design with WEBENCH® Tools
    2. 8.2 接收文档更新通知
    3. 8.3 支持资源
    4. 8.4 Trademarks
    5. 8.5 静电放电警告
    6. 8.6 术语表
  10. 9 Revision History
  11. 10Mechanical, Packaging, and Orderable Information

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6.1 Overview

The TPS56623x is a 6-A, integrated, FET, synchronous buck converter that operates from 3-V to 18-V input voltage (VIN) and 0.6-V to 7-V output voltage. The proprietary D-CAP3 control mode enables low external component count, ease of design, and optimization of the power design for cost, size, and efficiency. As the ULQ™ DC/DC converter, the device enables long battery life in system standby mode and high efficiency under light load conditions. The devices employ D-CAP3 control mode that provides fast transient response with no external compensation components and an accurate feedback voltage. The control topology provides a seamless transition between CCM operating mode in heavier load conditions and DCM operation in lighter load conditions.

Eco-mode allows the TPS566231 and TPS566231P to maintain high efficiency at light load. The TPS566238 and TPS566238P work in continuous current mode to maintain lower output ripple in all load conditions. The soft-start time of the TPS566231 and TPS566238 can be adjusted through the SS pin. The TPS566231P and TPS566238P indicate power good through the PG pin. The devices are able to adapt to both low equivalent series resistance (ESR) output capacitors, such as POS-CAP or SP-CAP, and ultra-low ESR ceramic capacitors.