JAJSQB9 January   2024 TPS56A37

PRODUCTION DATA  

  1.   1
  2. 1 特長
  3. 2 アプリケーション
  4. 3 概要
  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  The Adaptive On-Time Control and PWM Operation
      2. 6.3.2  Power Up Sequence
      3. 6.3.3  Eco-mode Control Scheme
      4. 6.3.4  Soft Start and Prebiased Soft Start
      5. 6.3.5  Enable and Adjusting Undervoltage Lockout
      6. 6.3.6  Output Overcurrent Limit and Undervoltage Protection
      7. 6.3.7  Overvoltage Protection
      8. 6.3.8  UVLO Protection
      9. 6.3.9  Thermal Shutdown
      10. 6.3.10 Output Voltage Discharge
      11. 6.3.11 Power Good
      12. 6.3.12 Large Duty Operation
    4. 6.4 Device Functional Modes
      1. 6.4.1 Standby Operation
      2. 6.4.2 Light Load 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 Output Voltage Resistors Selection
        2. 7.2.2.2 Output Filter Selection
        3. 7.2.2.3 Input Capacitor Selection
        4. 7.2.2.4 Bootstrap 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 Documentation Support
      1. 8.1.1 Related Documentation
    2. 8.2 ドキュメントの更新通知を受け取る方法
    3. 8.3 サポート・リソース
    4. 8.4 Trademarks
    5. 8.5 静電気放電に関する注意事項
    6. 8.6 用語集
  10. 9 Revision History
  11. 10Mechanical, Packaging, and Orderable Information

パッケージ・オプション

メカニカル・データ（パッケージ｜ピン）
サーマルパッド・メカニカル・データ
発注情報

6.1 Overview

The TPS56A37 is an 10A synchronous buck converter operating from 4.5V to 28V input voltage (Vin). The device output voltage ranges from 0.6V to 13V (Vout) and supports 10A continuous output current with fixed 500kHz switching frequency. The proprietary D-CAP3 control mode enables low external component count, ease of design, optimization of the power design for power, size and efficiency. The device employs D-CAP3 control mode that provides fast transient response with no external compensation components and an accurate feedback voltage. The control topology provides seamless transition between CCM operating mode at higher load condition and DCM operation at lighter load condition. Eco-mode allows the TPS56A37 to maintain high efficiency at light load. The TPS56A37 is able to adapt both low equivalent series resistance (ESR) output capacitors such as POSCAP or SP-CAP, and ultra-low ESR ceramic capacitors.

The EN pin has an internal pullup current that can be used to adjust the input voltage undervoltage lockout (UVLO) with two external resistors. In addition, the EN pin can be floating for the device to operate with the internal pullup current. Soft-start time can be set by connecting a capacitor to the SS pin. Leaving the SS pin floating is set to default 1.8ms soft-start time. The TPS56A37 has the PG pin to indicate output status and has a built-in discharge function by using an integrated MOSFET with 200Ω RDS(on). The device is protected from output short, undervoltage, overvoltage, and overtemperature conditions.