SLVU434A February   2011  – January 2022 TPS53125 , TPS53126 , TPS53127

 

  1.   Trademarks
  2. 1Introduction
    1. 1.1 Description
    2. 1.2 Application
    3. 1.3 Features
  3. 2Electrical Performance Specifications
  4. 3TPS53127EVM-614 Schematic
  5. 4Connector and Test Point Descriptions
    1. 4.1 Enable Switches (SW1 and SW2)
    2. 4.2 Switching Frequency Select Switch (SW3)
    3. 4.3 Test Point Descriptions
      1. 4.3.1 Input Voltage Monitoring (TP3 and TP9)
      2. 4.3.2 Channel 1 Output Voltage Monitoring (TP4 and TP8)
      3. 4.3.3 Channel 2 Output Voltage Monitoring (TP6 and TP7)
      4. 4.3.4 Soft-Start Voltage Monitoring (TP1, TP2, and TP3)
      5. 4.3.5 Switching Node Monitoring (TP3, TP5, and TP11)
      6. 4.3.6 5-V Regulator Output Monitoring (TP3 and TP10)
  6. 5Test Setup
    1. 5.1 Equipment
      1. 5.1.1 Voltage Source
      2. 5.1.2 Meters
      3. 5.1.3 Loads
      4. 5.1.4 Oscilloscope
      5. 5.1.5 Recommended Wire Gauge
      6. 5.1.6 Other
    2. 5.2 Equipment Setup
      1. 5.2.1 Procedure
      2. 5.2.2 Diagram
    3. 5.3 Start-Up/Shutdown Procedure
    4. 5.4 Output Ripple Voltage Measurement Procedure
    5. 5.5 Equipment Shutdown
  7. 6TPS53127EVM-614 Test Data
    1. 6.1 Efficiency
    2. 6.2 Line and Load Regulation
    3. 6.3 Output Voltage Ripple and Switching Node Waveforms
    4. 6.4 Switch Node
  8. 7TPS53127EVM-614 EVM Assembly Drawings and Layout
  9. 8Bill of Materials
  10. 9Revision History

4.3.5 Switching Node Monitoring (TP3, TP5, and TP11)

The TPS53127EVM-614 provides two test points for measuring the switching node waveform voltages. TP5 monitors the switching node of Channel 1. TP2 monitors the switching node of Channel 2. To use TP5 or TP11, connect an oscilloscope probe between TP5 or TP11 and TP3.