ZHCSK35C March   2019  – March 2021 TPS92682-Q1

PRODUCTION DATA  

  1. 1 特性
  2. 2 应用
  3. 3 说明
  4. 4 Revision History
  5. 5 Pin Configuration and Functions
  6. 6 Specifications
    1. 6.1 Absolute Maximum Ratings
    2. 6.2 ESD Ratings
    3. 6.3 Recommended Operating Conditions
    4. 6.4 Thermal Information
    5. 6.5 Electrical Characteristics
    6. 6.6 Typical Characteristics
  7. 7 Detailed Description
    1. 7.1 Overview
    2. 7.2 Functional Block Diagram
    3. 7.3 Feature Description
      1. 7.3.1  Device Enable
      2. 7.3.2  Internal Regulator and Undervoltage Lockout (UVLO)
      3. 7.3.3  Oscillator
      4. 7.3.4  Spread Spectrum Function
      5. 7.3.5  Gate Driver
      6. 7.3.6  Rail-to-Rail Current Sense Amplifier
      7. 7.3.7  Transconductance Error Amplifier
      8. 7.3.8  Switch Current Sense
      9. 7.3.9  Slope Compensation
      10. 7.3.10 ILED Setting in CC Mode
      11. 7.3.11 Output Voltage Setting in CV Mode
      12. 7.3.12 PWM Dimming
      13. 7.3.13 P-Channel FET Gate Driver Output
      14. 7.3.14 Soft Start
      15. 7.3.15 Two-Phase Operation
        1. 7.3.15.1 Current Sharing In Two-Phase
      16. 7.3.16 Faults and Diagnostics
        1. 7.3.16.1  Main Fault Timer (MFT)
        2. 7.3.16.2  OV Fault
        3. 7.3.16.3  UV Fault
        4. 7.3.16.4  ILIM Fault
        5. 7.3.16.5  UVLO
        6. 7.3.16.6  ILED Over Current (OC)
        7. 7.3.16.7  ILED Undercurrent (UC)
        8. 7.3.16.8  ISNOPEN, FBOPEN, and RTOPEN Faults
        9. 7.3.16.9  TW and TSD
        10. 7.3.16.10 COMPx Pull-Down and Comp-Low signal
    4. 7.4 Device Functional Modes
      1. 7.4.1 POR Mode
      2. 7.4.2 Normal Operation
      3. 7.4.3 Limp Home
    5. 7.5 Programming
      1. 7.5.1 Serial Interface
      2. 7.5.2 Command Frame
      3. 7.5.3 Response Frame
        1. 7.5.3.1 Read Response Frame Format
        2. 7.5.3.2 Write Response Frame Format
        3. 7.5.3.3 Write Error/POR Frame Format
      4. 7.5.4 SPI Error
    6. 7.6 TPS92682 Registers
      1. 7.6.1  EN Register
      2. 7.6.2  CFG1 Register
      3. 7.6.3  CFG2 Register
      4. 7.6.4  SWDIV Register
      5. 7.6.5  ISLOPE Register
      6. 7.6.6  FM Register
      7. 7.6.7  SOFTSTART Register
      8. 7.6.8  CH1IADJ Register
      9. 7.6.9  CH2IADJ Register
      10. 7.6.10 PWMDIV Register
      11. 7.6.11 CH1PWML Register
      12. 7.6.12 CH1PWMH Register
      13. 7.6.13 CH2PWML Register
      14. 7.6.14 CH2PWMH Register
      15. 7.6.15 ILIM Register
      16. 7.6.16 IFT Register
      17. 7.6.17 MFT Register
      18. 7.6.18 FLT1 Register (read only)
      19. 7.6.19 FLT2 Register (read only)
      20. 7.6.20 FEN1 Register
      21. 7.6.21 FEN2 Register
      22. 7.6.22 FLATEN Register
      23. 7.6.23 OV Register
      24. 7.6.24 LHCFG Register
      25. 7.6.25 LHCH1IADJ Register
      26. 7.6.26 LHCH2IADJ Register
      27. 7.6.27 LHCH1PWML Register
      28. 7.6.28 LHCH1PWMH Register
      29. 7.6.29 LHCH2PWML Register
      30. 7.6.30 LHCH2PWMH Register
      31. 7.6.31 LHILIM Register
      32. 7.6.32 LHIFT Register
      33. 7.6.33 LHMFT Register
      34. 7.6.34 LHFEN1 Register
      35. 7.6.35 LHFEN2 Register
      36. 7.6.36 LHFLATEN Register
      37. 7.6.37 LHOV Register
      38. 7.6.38 CAL Register
      39. 7.6.39 RESET Register
  8. 8 Application and Implementation
    1. 8.1 Application Information General Design Considerations
      1. 8.1.1 Switching Frequency, fSW
      2. 8.1.2 Duty Cycle Considerations
      3. 8.1.3 Main Power MOSFET Selection
      4. 8.1.4 Rectifier Diode Selection
      5. 8.1.5 Switch Current Sense Resistor
      6. 8.1.6 Slope Compensation
      7. 8.1.7 Soft Start
    2. 8.2 Application Information CC Mode
      1. 8.2.1 Inductor Selection
      2. 8.2.2 Output Capacitor Selection
      3. 8.2.3 Input Capacitor Selection
      4. 8.2.4 Programming LED Current
      5. 8.2.5 Feedback Compensation
      6. 8.2.6 Overvoltage and Undervoltage Protection
      7. 8.2.7 Series P-Channel MOSFET Selection
      8. 8.2.8 Programming Example for Two-Channel CC Mode
    3. 8.3 Typical Application CV Mode
      1. 8.3.1 Inductor Selection
      2. 8.3.2 Output Capacitor Selection
      3. 8.3.3 Input Capacitor Selection
      4. 8.3.4 Programming Output Voltage VOUT
      5. 8.3.5 Feedback Compensation
      6. 8.3.6 Overvoltage and Undervoltage Protection
      7. 8.3.7 Programing Example for Two-Phase CV BOOST
    4. 8.4 Typical Application CC Mode
      1. 8.4.1 CC Boost Design Requirements
      2. 8.4.2 CC Boost Detailed Design Procedure
        1. 8.4.2.1  Calculating Duty Cycle
        2. 8.4.2.2  Setting Switching Frequency
        3. 8.4.2.3  Setting Dither Modulation Frequency
        4. 8.4.2.4  Inductor Selection
        5. 8.4.2.5  Output Capacitor Selection
        6. 8.4.2.6  Input Capacitor Selection
        7. 8.4.2.7  Main N-Channel MOSFET Selection
        8. 8.4.2.8  Rectifier Diode Selection
        9. 8.4.2.9  Setting ILED and Selecting RCS
        10. 8.4.2.10 Setting Switch Current Limit
        11. 8.4.2.11 Slope Compensation
        12. 8.4.2.12 Compensator Parameters
        13. 8.4.2.13 Overvoltage Protection
        14. 8.4.2.14 Series P-Channel MOSFET Selection
      3. 8.4.3 CC Buck-Boost Design Requirements
      4. 8.4.4 CC Buck-Boost Detailed Design Procedure
        1. 8.4.4.1  Calculating Duty Cycle
        2. 8.4.4.2  Setting Switching Frequency
        3. 8.4.4.3  Setting Dither Modulation Frequency
        4. 8.4.4.4  Inductor Selection
        5. 8.4.4.5  Output Capacitor Selection
        6. 8.4.4.6  Input Capacitor Selection
        7. 8.4.4.7  Main N-Channel MOSFET Selection
        8. 8.4.4.8  Rectifier Diode Selection
        9. 8.4.4.9  Setting ILED and Selecting RCS
        10. 8.4.4.10 Setting Switch Current Limit
        11. 8.4.4.11 Slope Compensation
        12. 8.4.4.12 Compensator Parameters
        13. 8.4.4.13 Overvoltage Protection
      5. 8.4.5 PWM Dimming Consideration
      6. 8.4.6 Application Curves
    5. 8.5 Typical Application CV Mode
      1. 8.5.1 CV Design Requirements
      2. 8.5.2 Detailed Design Procedure
        1. 8.5.2.1  Calculating Duty Cycle
        2. 8.5.2.2  Setting Switching Frequency
        3. 8.5.2.3  Setting Dither Modulation Frequency
        4. 8.5.2.4  Inductor Selection
        5. 8.5.2.5  Output Capacitor Selection
        6. 8.5.2.6  Input Capacitor Selection
        7. 8.5.2.7  Main N-Channel MOSFET Selection
        8. 8.5.2.8  Rectifier Diode Selection
        9. 8.5.2.9  Programming VOUT
        10. 8.5.2.10 Setting Switch Current Limit
        11. 8.5.2.11 Slope Compensation
        12. 8.5.2.12 Compensator Parameters
        13. 8.5.2.13 Overvoltage Protection
      3. 8.5.3 Application Curves
  9. 9 Power Supply Recommendations
  10. 10Layout
    1. 10.1 Layout Guidelines
    2. 10.2 Layout Example
  11. 11Device and Documentation Support
    1. 11.1 接收文档更新通知
    2. 11.2 支持资源
    3. 11.3 Trademarks
    4. 11.4 静电放电警告
    5. 11.5 术语表
  12. 12Mechanical, Packaging, and Orderable Information

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订购信息

1 特性

  • 符合 AEC-Q100 1 级标准
  • 提供功能安全
  • 宽输入电压范围：4.5V 至 65V
  • 在 –40°C 至 150°C 结温范围内的 LED 电流精度为 ±4%
  • SPI 通信接口
  • SPI 可编程特性：
    • 通过扩频改善了 EMI
    • 软启动计时
    • ILED 电流和输出电压设置
    • 电流限制，过压，故障计时器
    • 单相与双相
    • CV 和 CC 模式配置
  • 双通道峰值电流模式 (PCM) 控制器
  • 低输入失调电压轨至轨电流感应放大器
  • 模拟调光
  • 采用集成 P 通道驱动器接口的外部串联 FET PWM 调光
    • PWM 调光范围超过 1000:1
  • 每个通道配备漏极开路故障标志指示器
  • 高达 1MHz 的可编程开关频率，具有外部时钟同步功能
  • 全面可编程故障保护电路
  • 采用可湿性侧面 VQFN 封装