SLUUC44A July   2019  – December 2022

 

  1.   TPSM8281xEVM-089 Evaluation Module
  2.   Trademarks
  3. 1Introduction
    1. 1.1 Performance Specification
    2. 1.2 Modifications
      1. 1.2.1 Input and Output Capacitors
      2. 1.2.2 Switching Frequency, Spread Spectrum and Control Loop Compensation
      3. 1.2.3 Soft-Start Time
      4. 1.2.4 Loop Response Measurement
      5. 1.2.5 Precise Turn-on Voltage
  4. 2Setup
    1. 2.1 Hardware Setup
    2. 2.2 Input, Output Connector, and Jumper Descriptions
  5. 3Safety Instructions
  6. 4TPSM8281xEVM-089 Test Results
  7. 5Board Layout
  8. 6Schematic and Bill of Materials
    1. 6.1 Schematic
    2. 6.2 Bill of Materials
  9.   A Appendix - Rev.A EVM
    1.     A.1 Rev.A - Setup
      1.      A.1.1 Rev.A - Connector Descriptions
      2.      A.1.2 Rev.A - Hardware Setup
    2.     A.2 Rev.A - Board Layout
    3.     A.3 Rev.A - Schematic and Bill of Materials
      1.      A.3.1 Rev.A - Schematic
      2.      A.3.2 Rev.A - Bill of Materials
  10.   B Revision History

1.2.5 Precise Turn-on Voltage

With the jumper on JP1 removed, R5 and R7 can be modified to create a precise turn-on voltage. See Achieving a Clean Start-up by Using a DC/DC Converter with a Precise Enable-pin Threshold technical brief for details.