SNVU589A December   2017  – January 2022 TPS53119

 

  1.   Trademarks
  2. 1 Introduction
  3. 2 Description
    1. 2.1 Typical Applications
    2. 2.2 Features
  4. 3 Electrical Performance Specifications
  5. 4 Schematic
  6. 5 Test Setup
    1. 5.1 Test Equipment
    2. 5.2 Recommended Test Setup
  7. 6 Configurations
    1. 6.1 Switching Frequency Selection
    2. 6.2 Soft-Start Selection
    3. 6.3 Mode Selection
    4. 6.4 Enable Selection
  8. 7 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. 8 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. 9 EVM Assembly Drawing and PCB Layout
  11. 10Bill of Materials
  12. 11Revision History

7.1 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.