JAJSF52 April   2018 TPA3126D2

PRODUCTION DATA.  

  1. 1 特長
  2. 2 アプリケーション
  3. 3 概要
    1.     Device Images
      1.      TPA3126とTPA3116のアイドル電流
      2.      アプリケーションの簡略回路図
  4. 4 改訂履歴
  5. 5 Device Comparison Table
  6. 6 Pin Configuration and Functions
    1.     Pin Functions
  7. 7 Specifications
    1. 7.1 Absolute Maximum Ratings
    2. 7.2 ESD Ratings
    3. 7.3 Recommended Operating Conditions
    4. 7.4 Thermal Information
    5. 7.5 DC Electrical Characteristics
    6. 7.6 AC Electrical Characteristics
    7. 7.7 Typical Characteristics
  8. 8 Detailed Description
    1. 8.1 Overview
    2. 8.2 Functional Block Diagram
    3. 8.3 Feature Description
      1. 8.3.1  Gain Setting and Master and Slave
      2. 8.3.2  Input Impedance
      3. 8.3.3  Startup and Shutdown Operation
      4. 8.3.4  PLIMIT Operation
      5. 8.3.5  GVDD Supply
      6. 8.3.6  BSPx and BSNx Capacitors
      7. 8.3.7  Differential Inputs
      8. 8.3.8  Device Protection System
      9. 8.3.9  DC Detect Protection
      10. 8.3.10 Short-Circuit Protection and Automatic Recovery Feature
      11. 8.3.11 Thermal Protection
      12. 8.3.12 Device Modulation Scheme
        1. 8.3.12.1 BD Modulation
      13. 8.3.13 Efficiency: LC Filter Required with the Traditional Class-D Modulation Scheme
      14. 8.3.14 Ferrite Bead Filter Considerations
      15. 8.3.15 When to Use an Output Filter for EMI Suppression
      16. 8.3.16 AM Avoidance EMI Reduction
    4. 8.4 Device Functional Modes
      1. 8.4.1 Mono PBTL Mode
      2. 8.4.2 Mono BTL Mode (Single Channel Mode)
  9. 9 Application and Implementation
    1. 9.1 Application Information
      1. 9.1.1 Typical Application
        1. 9.1.1.1 Design Requirements
        2. 9.1.1.2 Detailed Design Procedure
          1. 9.1.1.2.1 Select the PWM Frequency
          2. 9.1.1.2.2 Select the Amplifier Gain and Master/Slave Mode
          3. 9.1.1.2.3 Select Input Capacitance
          4. 9.1.1.2.4 Select Decoupling Capacitors
          5. 9.1.1.2.5 Select Bootstrap Capacitors
        3. 9.1.1.3 Application Curves
  10. 10Power Supply Recommendations
    1. 10.1 Power Supply Mode
  11. 11Layout
    1. 11.1 Layout Guidelines
    2. 11.2 Layout Example
    3. 11.3 Heat Sink Used on the EVM
  12. 12デバイスおよびドキュメントのサポート
    1. 12.1 デバイス・サポート
      1. 12.1.1 開発サポート
    2. 12.2 ドキュメントの更新通知を受け取る方法
    3. 12.3 関連資料
    4. 12.4 コミュニティ・リソース
    5. 12.5 商標
    6. 12.6 静電気放電に関する注意事項
    7. 12.7 Glossary
  13. 13メカニカル、パッケージ、および注文情報

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

8.3.15 When to Use an Output Filter for EMI Suppression

A complete LC reconstruction filter should be added in some circuit instances. These circumstances might occur if there are nearby circuits which are sensitive to noise. In these cases, a classic second order Butterworth filter similar to those shown in Figure 31 can be used.

Some systems have little power supply decoupling from the AC line but are also subject to line conducted interference (LCI) regulations. These include systems powered by "wall warts" and "power bricks." In these cases, LC reconstruction filters can be the lowest-cost methods to pass LCI tests. Common mode chokes using low frequency ferrite material can also be effective in preventing line conducted interference.

TPA3126D2 AM_Avoidance_EMI_Reduction_los708.gifFigure 31. Output Filters