SLVU728A May   2012  – December 2021 TPS53318 , TPS53319

 

  1. 1 Introduction
    1. 1.1 Typical Applications
    2. 1.2 Features
  2. 2 Electrical Performance Specifications
  3. 3 Schematic
  4. 4 Test Setup
    1. 4.1 Test Equipment
    2. 4.2 Recommended Test Setup
  5. 5 Configurations
    1. 5.1 Switching Frequency Selection
    2. 5.2 Soft Start Selection
    3. 5.3 Mode Selection
    4. 5.4 Enable Selection
  6. 6 Test Procedure
    1. 6.1 Line/Load Regulation and Efficiency Measurement Procedure
    2. 6.2 Control Loop Gain and Phase Measurement Procedure
    3. 6.3 List of Test Points
    4. 6.4 Equipment Shutdown
  7. 7 Performance Data and Typical Characteristic Curves
    1. 7.1  Efficiency
    2. 7.2  Load Regulation
    3. 7.3  Line Regulation
    4. 7.4  Enable Turn-On/ Turn-Off
    5. 7.5  Output Ripple
    6. 7.6  Switching Node
    7. 7.7  Output Transient with Auto-skip Mode
    8. 7.8  Output Transient with FCCM mode
    9. 7.9  Output 0.75-V Pre-bias Turn-On
    10. 7.10 Output Overcurrent and Short Circuit Protection
    11. 7.11 Bode plot
    12. 7.12 Thermal Image
  8. 8 EVM Assembly Drawing and PCB Layout
  9. 9 Bill of Materials
  10. 10Revision History

6.1 Line/Load Regulation and Efficiency Measurement Procedure

  1. Set up EVM as described in Section 4 and Figure 4-2.
  2. Ensure Load is set to constant resistance mode and to sink 0Adc
  3. Ensure all jumpers configuration settings per section 5.
  4. Ensure the jumper provided in the EVM shorts on J6 before Vin is applied.
  5. Increase Vin from 0V to 12V. Using V1 to measure input voltage.
  6. Remove the jumper on J6 to enable the controller.
  7. Use V2 to measure Vout voltage.
  8. Vary Load from 0-14Adc, Vout should be remain in load regulation.
  9. Vary Vin from 8V to 20V, Vout should remain in line regulation.
  10. Put the jumper on J6 to disable the controller.
  11. Decrease Load to 0A
  12. Decrease Vin to 0V.