JAJSOC6A march   2023  – april 2023 TPSF12C1

PRODUCTION DATA  

  1.   1
  2. 1 特長
  3. 2 アプリケーション
  4. 3 概要
  5. 4 Revision History
  6. 5 Device Comparison Table
  7. 6 Pin Configuration and Functions
  8. 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 Electrical Characteristics
    6. 7.6 System Characteristics
    7. 7.7 Typical Characteristics
  9. 8 Detailed Description
    1. 8.1 Overview
    2. 8.2 Functional Block Diagram
    3. 8.3 Feature Description
      1. 8.3.1 Active EMI Filtering
        1. 8.3.1.1 Schematics
      2. 8.3.2 Capacitive Amplification
      3. 8.3.3 Integrated Line Rejection Filter
      4. 8.3.4 Compensation
      5. 8.3.5 Remote Enable
      6. 8.3.6 Supply Voltage UVLO Protection
      7. 8.3.7 Thermal Shutdown Protection
    4. 8.4 Device Functional Modes
      1. 8.4.1 Shutdown Mode
      2. 8.4.2 Active Mode
  10. 9 Applications and Implementation
    1. 9.1 Application Information
    2. 9.2 Typical Applications
      1. 9.2.1 Design 1 – AEF Circuit for a High-Density 3-kW Server Rack Power Supply
        1. 9.2.1.1 Design Requirements
        2. 9.2.1.2 Detailed Design Procedure
          1. 9.2.1.2.1 Sense Capacitors
          2. 9.2.1.2.2 Inject Capacitor
          3. 9.2.1.2.3 Compensation Network
          4. 9.2.1.2.4 Injection Network
          5. 9.2.1.2.5 Surge Protection
        3. 9.2.1.3 Application Curves
    3. 9.3 Power Supply Recommendations
    4. 9.4 Layout
      1. 9.4.1 Layout Guidelines
      2. 9.4.2 Layout Example
  11. 10Device and Documentation Support
    1. 10.1 Device Support
      1. 10.1.1 サード・パーティ製品に関する免責事項
      2. 10.1.2 Development Support
    2. 10.2 Documentation Support
      1. 10.2.1 Related Documentation
    3. 10.3 ドキュメントの更新通知を受け取る方法
    4. 10.4 サポート・リソース
    5. 10.5 Trademarks
    6. 10.6 静電気放電に関する注意事項
    7. 10.7 用語集
  12. 11Mechanical, 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

8.1 Overview

The TPSF12C1 is an active electromagnetic interference (EMI) filter that is designed to reduce common-mode (CM) conducted emissions in off-line power converter systems. Using a VSCI architecture, the device senses the high-frequency noise on each power line using a set of Y-rated capacitors, CSEN1 and CSEN2, then injects noise-canceling currents back into the power lines using a Y-rated capacitor, CINJ, along with a damping circuit that ensures stability. The device includes integrated filtering, compensation and protection circuitry.

The TPSF12C1 provides a low-impedance shunt path for CM noise in the frequency range of interest for EMI measurement. This feature can achieve approximately 15 to 30 dB of CM attenuation over the applicable frequency range (for example, 100 kHz to 3 MHz) helping to reduce the size of CM chokes, typically the largest components in the filter.

The TPSF12C1 operates over a supply voltage range of 8 V to 16 V and can withstand 18 V. The device features include:

  • Internal circuitry that simplifies compensation and design
  • Built-in supply voltage UVLO to ensure proper operation
  • Built-in thermal shutdown protection
  • An EN input that allows power saving when the system is idling

The active EMI filter circuit significantly reduces EMI filter cost, size, and weight, while helping to meet CISPR 11 and CISPR 32 Class B limits for conducted emissions. Leveraging a pin arrangement designed for simple layout that requires relatively few external components, the TPSF12C1 is specified for maximum ambient and junction temperatures of 105°C and 150°C, respectively.