ZHCS779C March   2012  – July 2025 UCC28070 , UCC28070A

PRODUCTION DATA  

  1.   1
  2. 1 特性
  3. 2 应用
  4. 3 说明
  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  Interleaving
      2. 6.3.2  Programming the PWM Frequency and Maximum Duty-Cycle Clamp
      3. 6.3.3  Frequency Dithering (Magnitude and Rate)
      4. 6.3.4  External Clock Synchronization
      5. 6.3.5  Multi-phase Operation
      6. 6.3.6  VSENSE and VINAC Resistor Configuration
      7. 6.3.7  VSENSE and VINAC Open-Circuit Protection
      8. 6.3.8  Current Synthesizer
      9. 6.3.9  Programmable Peak Current Limit
      10. 6.3.10 Linear Multiplier and Quantized Voltage Feed Forward
      11. 6.3.11 Enhanced Transient Response (VA Slew-Rate Correction)
      12. 6.3.12 Bias Voltages (VCC and VREF)
      13. 6.3.13 PFC Enable and Disable
      14. 6.3.14 Adaptive Soft-Start
      15. 6.3.15 PFC Start-Up Hold Off
      16. 6.3.16 Output Overvoltage Protection (OVP)
      17. 6.3.17 Zero-Power Detection
      18. 6.3.18 Thermal Shutdown
      19. 6.3.19 Current Loop Compensation
      20. 6.3.20 Voltage Loop Compensation
    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 Output Current Calculation
        2. 7.2.2.2 Bridge Rectifier
        3. 7.2.2.3 PFC Inductor (L1 and L2)
        4. 7.2.2.4 PFC MOSFETs (M1 and M2)
        5. 7.2.2.5 PFC Diode
        6. 7.2.2.6 PFC Output Capacitor
        7. 7.2.2.7 Current-Loop Feedback Configuration (Sizing of the Current-Transformer Turns-Ratio NCT and Current-Sense Resistor RS)
        8. 7.2.2.8 Current-Sense Offset and PWM Ramp for Improved Noise Immunity
      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 器件和文档支持
    1. 8.1 文档支持
      1. 8.1.1 相关文档
    2. 8.2 接收文档更新通知
    3. 8.3 支持资源
    4. 8.4 商标
    5. 8.5 静电放电警告
    6. 8.6 术语表
  10. 9 Revision History
  11. 10Mechanical, Packaging, and Orderable Information

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8.1.1 相关文档

如需帮助进行系统设计的相关文档，请参阅以下内容：

  1. 德州仪器 (TI)，UCC28070 Excel 应用设计工具 计算程序
  2. 德州仪器 (TI)，UCC28070 300W 交错式 PFC 前置稳压器设计审查 应用报告，Excel 设计工具的配套文档
  3. O’Loughlin, Michael，用于大功率转换器的交错式 PFC 前置稳压器，德州仪器 (TI) 2006 Unitrode 电源研讨会，主题 5
  4. Erickson, Robert W., Fundamentals of Power Electronics, 1st ed., pp. 604-608 Norwell, MA: Kluwer Academic Publishers, 1997
  5. Erickson, R. W. & Maksimović, D. (2001), Fundamentals of Power Electronics (2nd ed.), Springer Science+Business Media, LLC. pp. 642-643
  6. Creel, Kirby Measuring Transformer Distributed Capacitance 白皮书，Datatronic Distribution, Inc. 网站：http://www.datatronics.com/pdf/distributed_capacitance_paper.pdf
  7. L. H. Dixon，优化高功率因数开关前置稳压器的设计，Unitrode 电源设计研讨会手册 SEM700，1990 年。SLUP093
  8. L. H. Dixon，用于离线电源的高功率因数前置稳压器，Unitrode 电源设计研讨会手册 SEM600，1988 年。SLUP087