SLVU432A February   2011  – January 2022 TPS53125 , TPS53126 , TPS53127 , TPS53128 , TPS53129

 

  1.   Trademarks
  2. 1 Introduction
    1. 1.1 Description
    2. 1.2 Application
    3. 1.3 Features
  3. 2 Electrical Performance Specifications
  4. 3 Schematics
  5. 4 Connector 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. 5 Test 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 Recommended Setup
  7. 6 Test Procedure
    1. 6.1 Start-Up Procedure
    2. 6.2 Line/Load Regulation and Efficiency Measurement Procedure
    3. 6.3 Output Ripple Voltage Measurement Procedure
    4. 6.4 Shutdown Procedure
  8. 7 Performance Data and Typical Characteristic Curves
    1. 7.1 Efficiency
    2. 7.2 Line and Load Regulation
    3. 7.3 Output Voltage Ripple
    4. 7.4 Switch Node Waveforms
  9. 8 EVM Assembly Drawings and Layout
  10. 9 Bill of Materials
  11. 10Revision History

4.3 Test Point Descriptions

Table 4-1 lists the test points, their labels, uses, and where additional information is located.

Table 4-1 TPS53129EVM-621 Test Points Description
Test Point Label Use Section
TP1 SS1 Monitor Channel-1 Soft-Start Voltage Section 4.3.4
TP2 SS2 Monitor Channel-2 Soft-Start Voltage Section 4.3.4
TP3 GND Ground for Input Voltage Section 4.3.1
TP4 GND Ground for Channel-1 Output Voltage Section 4.3.2
TP5 SW1 Monitor Switching Node for Channel 1 Section 4.3.5
TP6 GND Ground for Channel-2 Output Voltage Section 4.3.3
TP7 VOUT2 Monitor Output Voltage for Channel 2 Section 4.3.3
TP8 VOUT1 Monitor Output Voltage for Channel 1 Section 4.3.2
TP9 VIN Monitor Input Voltage Section 4.3.1
TP10 VREG5 Monitor Output of VREG5 Regulator Section 4.3.6
TP11 SW2 Monitor Switching Node for Channel 2 Section 4.3.5