ZHCS491B August   2011  – December 2014 TPA2025D1

PRODUCTION DATA.  

  1. 1 特性
  2. 2 应用范围
  3. 3 说明
  4. 4 简化应用示意图
  5. 5 修订历史记录
  6. 6 Device Comparison Table
  7. 7 Pin Configuration and Functions
  8. 8 Specifications
    1. 8.1 Absolute Maximum Ratings
    2. 8.2 ESD Ratings
    3. 8.3 Recommended Operating Conditions
    4. 8.4 Thermal Information
    5. 8.5 Electrical Characteristics
    6. 8.6 Operating Characteristics
    7. 8.7 Typical Characteristics
  9. 9 Parameter Measurement Information
  10. 10Detailed Description
    1. 10.1 Overview
    2. 10.2 Functional Block Diagram
    3. 10.3 Feature Description
      1. 10.3.1 Battery Tracking Automatic Gain Control (AGC)
      2. 10.3.2 Boost Converter Auto Pass Through (APT)
      3. 10.3.3 Short Circuit Auto-Recovery
      4. 10.3.4 Thermal Protection
      5. 10.3.5 Operation with DACS and Codecs
    4. 10.4 Device Functional Modes
      1. 10.4.1 Operation Below AGC Threshold
      2. 10.4.2 Shutdown Mode
  11. 11Application and Implementation
    1. 11.1 Application Information
    2. 11.2 Typical Application
      1. 11.2.1 Design Requirements
      2. 11.2.2 Detailed Design Procedure
        1. 11.2.2.1 Boost Converter Component Section
          1. 11.2.2.1.1 Inductor Equations
          2. 11.2.2.1.2 Boost Converter Capacitor Selection
          3. 11.2.2.1.3 Boost Terms
        2. 11.2.2.2 Input Capacitors
        3. 11.2.2.3 Speaker Load Limitation
      3. 11.2.3 Application Curve
  12. 12Power Supply Recommendations
    1. 12.1 Power Supply Decoupling Capacitors
  13. 13Layout
    1. 13.1 Layout Guidelines
    2. 13.2 Layout Example
  14. 14器件和文档支持
    1. 14.1 商标
    2. 14.2 静电放电警告
    3. 14.3 术语表
  15. 15机械、封装和可订购信息

封装选项

机械数据 (封装 | 引脚)
散热焊盘机械数据 (封装 | 引脚)
订购信息

12 Power Supply Recommendations

The TPA2025D1 is designed to operate from an input voltage supply range between 2.5-V and 5.2-V. Therefore, the output voltage range of power supply should be within this range and well regulated. The current capability of upper power should not exceed the maximum current limit of the power switch.

12.1 Power Supply Decoupling Capacitors

The TPA2025D1 is a high-performance Class-D audio amplifier that requires adequate power supply decoupling. Adequate power supply decoupling to ensures that the efficiency is high and total harmonic distortion (THD) is low.

Place a low equivalent-series-resistance (ESR) ceramic capacitor, typically 0.1 µF, within 2 mm of the VBAT ball. This choice of capacitor and placement helps with higher frequency transients, spikes, or digital hash on the line. Additionally, placing this decoupling capacitor close to the TPA2025D1 is important, as any parasitic resistance or inductance between the device and the capacitor causes efficiency loss. In addition to the 0.1 μF ceramic capacitor, place a 2.2 µF to 10 µF capacitor on the VBAT supply trace. This larger capacitor acts as a charge reservoir, providing energy faster than the board supply, thus helping to prevent any droop in the supply voltage.