SLUU359A April   2009  – February 2022 TPS51113

 

  1.   Trademarks
  2. 1 Introduction
  3. 2 Description
  4. 3 Typical Applications
  5. 4 Features
  6. 5 Electrical Performance Specifications
  7. 6 Schematic
  8. 7 Test Setup
    1. 7.1 Test Equipment
      1. 7.1.1 Voltage Source
      2. 7.1.2 Multimeters
      3. 7.1.3 Output Load
      4. 7.1.4 Oscilloscope
      5. 7.1.5 Fan
      6. 7.1.6 Recommended Wire Gauge
    2. 7.2 Recommended Test Setup
      1. 7.2.1 Input Connections
      2. 7.2.2 Output Connections
      3. 7.2.3 Other Connections
  9. 8 Test Procedure
    1. 8.1 Line/Load Regulation and Efficiency Measurement Procedure
    2. 8.2 Control Loop Gain and Phase Measurement Procedure
    3. 8.3 Test Points
    4. 8.4 Equipment Shutown Procedure
  10. 9 Performance Data and Typical Characteristic Curves
  11. 10EVM Assembly Drawing and PCB Layout
  12. 11List of Materials
  13. 12References
  14. 13Revision History

8.1 Line/Load Regulation and Efficiency Measurement Procedure

  1. Ensure that the load is set to constant resistance mode and to sink 0 ADC.
  2. Ensure that the jumper provided in the EVM shorts on JP1 before VIN is applied.
  3. Increase VIN from 0 V to 12 V, using V1 to measure input voltage.
  4. Remove the jumper on JP1 to enable the controller.
  5. Vary load from between 0 ADC and 25 ADC. VOUT should be remain in load regulation.
  6. Vary VIN from 8 V to 14 V. VOUT should remain in line regulation.
  7. Put the jumper on JP1 to disable the controller.
  8. Decrease the load to 0 A.
  9. Decrease VIN to 0 V.