SLVSI15A March   2025  – December 2025 TPSM8287B15 , TPSM8287B30

PRODMIX  

  1.   1
  2. 1 Features
  3. 2 Applications
  4. 3 Description
  5. 4 Device Options
  6. 5 Pin Configuration and Functions
  7. 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 I2C Interface Timing Requirements
    7. 6.7 Typical Characteristics
  8. 7 Detailed Description
    1. 7.1 Overview
    2. 7.2 Functional Block Diagram
    3. 7.3 Feature Description
      1. 7.3.1  Fixed-Frequency DCS-Control Topology
      2. 7.3.2  Forced PWM and Power Save Modes
      3. 7.3.3  Precise Enable
      4. 7.3.4  Start-Up
      5. 7.3.5  Output Voltage Setting
        1. 7.3.5.1 Output Voltage Setpoint
        2. 7.3.5.2 Output Voltage Range
        3. 7.3.5.3 Non-Default Output Voltage Setpoint
        4. 7.3.5.4 Dynamic Voltage Scaling (DVS)
        5. 7.3.5.5 Droop Compensation
      6. 7.3.6  Compensation (COMP)
      7. 7.3.7  Mode Selection / Clock Synchronization (MODE/SYNC)
      8. 7.3.8  Spread Spectrum Clocking (SSC)
      9. 7.3.9  Output Discharge
      10. 7.3.10 Undervoltage Lockout (UVLO)
      11. 7.3.11 Overvoltage Lockout (OVLO)
      12. 7.3.12 Overcurrent Protection
        1. 7.3.12.1 Cycle-by-Cycle Current Limiting
        2. 7.3.12.2 Hiccup Mode
        3. 7.3.12.3 Current-Limit Mode
      13. 7.3.13 Power Good (PG)
        1. 7.3.13.1 Power-Good Standalone, Primary Device Behavior
        2. 7.3.13.2 Power-Good Secondary Device Behavior
      14. 7.3.14 Remote Sense
      15. 7.3.15 Thermal Warning and Shutdown
      16. 7.3.16 Stacked Operation
    4. 7.4 Device Functional Modes
      1. 7.4.1 Power-On Reset (POR)
      2. 7.4.2 Undervoltage Lockout
      3. 7.4.3 Standby
      4. 7.4.4 On
    5. 7.5 Programming
      1. 7.5.1 Serial Interface Description
      2. 7.5.2 Standard-, Fast-, Fast-Mode Plus Protocol
      3. 7.5.3 I2C HS-Mode Protocol
      4. 7.5.4 I2C Update Sequence
      5. 7.5.5 I2C Register Reset
  9. 8 Device Registers
  10. 9 Application and Implementation
    1. 9.1 Application Information
    2. 9.2 Typical Application
      1. 9.2.1 Design Requirements
      2. 9.2.2 Detailed Design Procedure
        1. 9.2.2.1 Selecting the Input Capacitors
        2. 9.2.2.2 Selecting the Target Loop Bandwidth
        3. 9.2.2.3 Selecting the Compensation Resistor
        4. 9.2.2.4 Selecting the Output Capacitors
        5. 9.2.2.5 Selecting the Compensation Capacitor, CComp1
        6. 9.2.2.6 Selecting the Compensation Capacitor, CComp2
      3. 9.2.3 Application Curves
    3. 9.3 Typical Application Using Two TPSM8287B30x in Parallel Operation
      1. 9.3.1 Design Requirements
      2. 9.3.2 Detailed Design Procedure
        1. 9.3.2.1 Selecting the Input Capacitors
        2. 9.3.2.2 Selecting the Target Loop Bandwidth
        3. 9.3.2.3 Selecting the Compensation Resistor
        4. 9.3.2.4 Selecting the Output Capacitors
        5. 9.3.2.5 Selecting the Compensation Capacitor, CComp1
        6. 9.3.2.6 Selecting the Compensation Capacitor, CComp2
      3. 9.3.3 Application Curves
    4. 9.4 Power Supply Recommendations
    5. 9.5 Layout
      1. 9.5.1 Layout Guidelines
      2. 9.5.2 Layout Example
        1. 9.5.2.1 Thermal Considerations
  11. 10Device and Documentation Support
    1. 10.1 Device Support
      1. 10.1.1 Third-Party Products Disclaimer
    2. 10.2 Documentation Support
      1. 10.2.1 Related Documentation
    3. 10.3 Receiving Notification of Documentation Updates
    4. 10.4 Support Resources
    5. 10.5 Trademarks
    6. 10.6 Electrostatic Discharge Caution
    7. 10.7 Glossary
  12. 11Revision History
  13. 12Mechanical, Packaging, and Orderable Information

7.3.5.3 Non-Default Output Voltage Setpoint

If none of the output voltage setpoints in Table 7-2 are a good choice for the application, the user can change the output voltage through I2C before enabling the device. After the EN pin is pulled high, the device starts up and ramps to the desired output voltage set in the VSET register. A change of the device settings through I2C while the device is ramping is only performed after the initial ramp is completed. Storing these new device settings in the device nonvolatile memory is not possible.