ZHCSQ73 april   2023 TPS552892-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  VCC Power Supply
      2. 7.3.2  EXTVCC Power Supply
      3. 7.3.3  Input Undervoltage Lockout
      4. 7.3.4  Enable and Programmable UVLO
      5. 7.3.5  Soft Start
      6. 7.3.6  Shutdown
      7. 7.3.7  Switching Frequency
      8. 7.3.8  Switching Frequency Dithering
      9. 7.3.9  Inductor Current Limit
      10. 7.3.10 Internal Charge Path
      11. 7.3.11 Output Voltage Setting
      12. 7.3.12 Output Current Monitoring and Cable Voltage Droop Compensation
      13. 7.3.13 Output Current Limit
      14. 7.3.14 Overvoltage Protection
      15. 7.3.15 Output Short Circuit Protection
      16. 7.3.16 Power Good
      17. 7.3.17 Constant Current Output Indication
      18. 7.3.18 Thermal Shutdown
    4. 7.4 Device Functional Modes
      1. 7.4.1 PWM Mode
      2. 7.4.2 Power Save Mode
  8. 8 Application and Implementation
    1. 8.1 Application Information
    2. 8.2 Typical Application
      1. 8.2.1 Design Requirements
      2. 8.2.2 Detailed Design Procedure
        1. 8.2.2.1 Switching Frequency
        2. 8.2.2.2 Output Voltage Setting
        3. 8.2.2.3 Inductor Selection
        4. 8.2.2.4 Input Capacitor
        5. 8.2.2.5 Output Capacitor
        6. 8.2.2.6 Output Current Limit
        7. 8.2.2.7 Loop Stability
      3. 8.2.3 Application Curves
    3. 8.3 Power Supply Recommendations
    4. 8.4 Layout
      1. 8.4.1 Layout Guidelines
      2. 8.4.2 Layout Example
  9. 9 Device and Documentation Support
    1. 9.1 Device Support
      1. 9.1.1 第三方产品免责声明
    2. 9.2 接收文档更新通知
    3. 9.3 支持资源
    4. 9.4 Trademarks
    5. 9.5 静电放电警告
    6. 9.6 术语表
  10. 10Mechanical, Packaging, and Orderable Information

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8.2.3 Application Curves

GUID-975566FF-4355-4F3F-9119-507E51D41329-low.svg
Figure 8-2 Switching Waveforms in VIN = 12 V, VOUT = 5 V, IO = 5 A, FPWM
GUID-5CB96D9A-4A67-412F-A703-EC80F0F991F0-low.svgFigure 8-4 Switching Waveforms in VIN = 12 V, VOUT = 12 V, IO = 3 A, FPWM
GUID-1850859A-FC51-4C95-9EAA-8F295E634B48-low.svgFigure 8-6 Switching Waveforms in VIN = 12 V, VOUT = 20 V, IO = 2 A, FPWM
GUID-BA4C9988-3313-4AE6-B7AB-D20926391526-low.svgFigure 8-8 Start-up Waveforms in VIN = 12 V, VOUT = 5 V, RLOAD = 1.2 Ω, FPWM
GUID-4F791407-6BA7-4241-8FD0-7DF3ED4BF6FC-low.svgFigure 8-10 Line Transient Waveforms in VIN = 9 V to 20 V, VOUT = 12 V, IO = 3 A with 200-μs Slew Rate, FPWM

GUID-20230419-SS0I-LX07-6GKC-D1STJZZG5WQG-low.svg Figure 8-12 Output Current Limit Waveforms in VIN = 12 V, VOUT = 5 V, RLOAD = 0.8 Ω, RSNS = 10 mΩ, FPWM

GUID-D0036DF6-4EEE-4B18-983F-D1E2181EF556-low.svg
Figure 8-3 Switching Waveforms in VIN = 12 V, VOUT = 5 V, IO = 0 A, PFM
GUID-B02CB448-684E-4C0E-BAFB-48683E4C6E86-low.svgFigure 8-5 Switching Waveforms in VIN = 12 V, VOUT = 12 V, IO = 0 A, PFM
GUID-E2B100C0-8FE2-4354-BD12-A2FA71A897FA-low.svgFigure 8-7 Switching Waveforms in VIN = 12 V, VOUT = 20 V, IO = 0 A, PFM
GUID-AF1EBCEC-BEFF-4A53-9131-316C2613C98A-low.svgFigure 8-9 Shutdown Waveforms in VIN = 12 V, VOUT = 5 V, RLOAD = 1.2 Ω, FPWM
GUID-2916C397-E564-4B7B-9277-BC16FE544993-low.svgFigure 8-11 Load Transient Waveforms in VIN = 12 V, VOUT = 5 V, IO = 2.5 A to 5 A with 20-μs Slew Rate, FPWM