JAJSMH7D April   2020  – May 2024 UCC27624

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 Switching Characteristics
    7. 5.7 Timing Diagrams
    8. 5.8 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 Operating Supply Current
      2. 6.3.2 Input Stage
      3. 6.3.3 Enable Function
      4. 6.3.4 Output Stage
      5. 6.3.5 Low Propagation Delays and Tightly Matched Outputs
    4. 6.4 Device Functional Modes
  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 VDD and Undervoltage Lockout
        2. 7.2.2.2 Drive Current and Power Dissipation
      3. 7.2.3 Application Curves
  9. 8 Power Supply Recommendations
  10. 9 Layout
    1. 9.1 Layout Guidelines
    2. 9.2 Layout Example
    3. 9.3 Thermal Considerations
  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. 10.2 ドキュメントの更新通知を受け取る方法
    3. 10.3 サポート・リソース
    4. 10.4 Trademarks
    5. 10.5 静電気放電に関する注意事項
    6. 10.6 用語集
  12. 11Revision History
  13. 12Mechanical, 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

6.3.5 Low Propagation Delays and Tightly Matched Outputs

The UCC27624 driver device features a very small, 17-ns (typical) propagation delay between input and output, which offers the lowest level of pulse width distortion for high-frequency switching applications. For example, in synchronous rectifier applications, the SR MOSFETs are driven with very low distortion when a single driver device is used to drive the SR MOSFETs. Additionally, the driver devices also feature extremely accurate, 1-ns (typical) matched internal propagation delays between the two channels, which is beneficial for applications that require dual gate drives with critical timing. For example, in a PFC application, a pair of paralleled MOSFETs can be driven independently using each output channel, with the inputs of both channels driven by a common control signal from the PFC controller. In this case, the 1-ns delay matching ensures that the paralleled MOSFETs are driven in a simultaneous fashion, minimizing turn-on and turn-off delay differences. Another benefit of the tight matching between the two channels is that the two channels can be connected together to effectively double the drive current capability. That is, A and B channels may be combined into a single driver by connecting the INA and INB inputs together and the OUTA and OUTB outputs together; then, a single signal controls the paralleled power devices.