SLVU392A July   2010  – January 2022 TPS53125

 

  1.   Trademarks
  2. 1Description
    1. 1.1 Applications
    2. 1.2 Features
  3. 2TPS53125EVM-599 Electrical Performance Specifications
  4. 3TPS53125EVM-599 Schematic
  5. 4Connector and Test Point Descriptions
    1. 4.1 Enable Jumpers/Switches – SW1 and SW2
    2. 4.2 Test Point Descriptions
      1. 4.2.1 Input Voltage Monitoring – TPS and TP9
      2. 4.2.2 Channel 1 Output Voltage Monitoring – TP4 and TP8 or CN1
      3. 4.2.3 Channel 2 Output Voltage Monitoring – TP6 and TP7 or CN2
      4. 4.2.4 Soft-Start Voltage Monitoring – TP1, TP2, and TP3
      5. 4.2.5 Switching Node Monitoring – TP3, TP5, and TP11
      6. 4.2.6 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 and Probe
      5. 5.1.5 Recommended Wire Gauge
      6. 5.1.6 Other Test Equipment
    2. 5.2 Equipment Setup
      1. 5.2.1 Test Procedure
      2. 5.2.2 Test Setup Diagram
    3. 5.3 Start-Up/Shutdown Procedures
    4. 5.4 Output Ripple Voltage Measurement Procedure
    5. 5.5 Equipment Shutdown
  7. 6TPS53125EVM-599 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. 7TPS53125EVM-599 Assembly Drawings and Layout
  9. 8TPS53125EVM-599 Bill of Materials
  10. 9Revision History

5.2.1 Test Procedure

  1. When working at an ESD workstation, ensure that wrist straps, bootstraps, or mats are connected referencing the user to earth ground before power is applied to the EVM. Electrostatic smock and safety glasses are also recommended.
  2. Prior to connecting the DC input source, VIN, it is advisable to limit the source current from VIN to 3 ADC maximum. Ensure that VIN is initially set to 0 V and connected as shown in Figure 5-1.
  3. Verify SW1 and SW2 are in the desired position.
  4. Increase VIN from 0 V to 12 VDC.
  5. Vary VIN between 8 VDC and 22 VDC.
  6. Vary LOAD1 between 0 A and 4 ADC.
  7. Vary LOAD2 between 0 A and 4 ADC.
  8. Adjust SW1 between EN and DIS.
  9. Adjust SW2 between EN and DIS.
  10. Set SW1 to DIS.
  11. Set SW2 to DIS.
  12. Decrease LOAD1 to 0 A.
  13. Decrease LOAD2 to 0 A.
  14. Decrease VIN to 0 V.