SNVU589A December   2017  – January 2022 TPS53119

 

  1.   Trademarks
  2. Introduction
  3. Description
    1. 2.1 Typical Applications
    2. 2.2 Features
  4. Electrical Performance Specifications
  5. Schematic
  6. Test Setup
    1. 5.1 Test Equipment
    2. 5.2 Recommended Test Setup
  7. Configurations
    1. 6.1 Switching Frequency Selection
    2. 6.2 Soft-Start Selection
    3. 6.3 Mode Selection
    4. 6.4 Enable Selection
  8. Test Procedure
    1. 7.1 Line/Load Regulation and Efficiency Measurement Procedure
    2. 7.2 Control Loop Gain and Phase Measurement Procedure
    3. 7.3 List of Test Points
    4. 7.4 Equipment Shutdown
  9. Performance Data and Typical Characteristic Curves
    1. 8.1 Efficiency
    2. 8.2 Load Regulation
    3. 8.3 Output Transient
    4. 8.4 Output Ripple
    5. 8.5 Switching Node
    6. 8.6 Enable Turn-On/Turn-Off
    7. 8.7 Output 1.1-V Prebias Turn-On
    8. 8.8 Bode Plot
    9. 8.9 Thermal Image
  10. EVM Assembly Drawing and PCB Layout
  11. 10Bill of Materials
  12. 11Revision History

Line/Load Regulation and Efficiency Measurement Procedure

  1. Set up the EVM as described in Section 5 and Figure 5-2.
  2. Ensure that the load is set to constant resistance mode and to sink 0 ADC.
  3. Ensure that all jumper configuration settings per Section 6.
  4. Ensure that the jumper provided in the EVM shorts on J3 before VIN is applied.
  5. Increase VIN from 0 V to 12 V. Using V1 to measure input voltage.
  6. Remove the jumper on J3 to enable the controller.
  7. Use V2 to measure VOUT voltage.
  8. Vary the load from 0 ADC to 25 ADC; VOUT must remain in load regulation.
  9. Vary VIN from 8 V to 14 V; VOUT must remain in line regulation.
  10. Put the jumper on J3 to disable the controller.
  11. Decrease load to 0 A.
  12. Decrease VIN to 0 V.