ZHCSK64B October   2019  – December 2020 TPSM265R1

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 (VIN = 5 V)
    7. 6.7  Typical Characteristics (VIN = 12 V)
    8. 6.8  Typical Characteristics (VIN = 24 V)
    9. 6.9  Typical Characteristics (VIN = 48 V)
    10. 6.10 Typical Characteristics (VIN = 65 V)
  7. 7 Detailed Description
    1. 7.1 Overview
    2. 7.2 Functional Block Diagram
    3. 7.3 Feature Description
      1. 7.3.1 Adjustable Output Voltage (FB)
      2. 7.3.2 Input Capacitor Selection
      3. 7.3.3 Output Capacitor Selection
      4. 7.3.4 Precision Enable (EN), Undervoltage Lockout (UVLO), and Hysteresis (HYS)
      5. 7.3.5 PFM Operation
      6. 7.3.6 Power Good (PGOOD)
      7. 7.3.7 Configurable Soft Start (SS)
        1. 7.3.7.1 Prebiased Start-up
      8. 7.3.8 Overcurrent Protection (OCP)
      9. 7.3.9 Thermal Shutdown
    4. 7.4 Device Functional Modes
      1. 7.4.1 Shutdown Mode
      2. 7.4.2 Standby Mode
      3. 7.4.3 Active Mode
      4. 7.4.4 Sleep Mode
  8. 8 Applications and Implementation
    1. 8.1 Application Information
    2. 8.2 Typical Applications
      1. 8.2.1 Design Requirements
      2. 8.2.2 Detailed Design Procedure
        1. 8.2.2.1 Custom Design With WEBENCH® Tools
        2. 8.2.2.2 Output Voltage Setpoint
        3. 8.2.2.3 Input Capacitors
        4. 8.2.2.4 Output Capacitor Selection
        5. 8.2.2.5 UVLO Programming
        6. 8.2.2.6 Soft-Start Capacitor – CSS
      3. 8.2.3 Application Curves
  9. 9 Power Supply Recommendations
  10. 10Layout
    1. 10.1 Layout Guidelines
    2. 10.2 Layout Example
      1. 10.2.1 Theta JA versus PCB Area
      2. 10.2.2 Package Specifications
      3. 10.2.3 EMI
  11. 11Device and Documentation Support
    1. 11.1 Device Support
      1. 11.1.1 Third-Party Products Disclaimer
      2. 11.1.2 Development Support
      3. 11.1.3 Custom Design With WEBENCH® Tools
    2. 11.2 Documentation Support
      1. 11.2.1 Related Documentation
    3. 11.3 Receiving Notification of Documentation Updates
    4. 11.4 Support Resources
    5. 11.5 Trademarks
    6. 11.6 Electrostatic Discharge Caution
    7. 11.7 Glossary
  12. 12Mechanical, Packaging, and Orderable Information

7.4.3 Active Mode

The TPSM265R1 is in active mode when VEN and the internal bias rail are above their relevant thresholds, FB has fallen below the lower hysteresis level, and boundary conduction mode is recharging the output capacitor to the upper hysteresis level. There is a 4-µs wake-up delay from sleep to active states.
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