SLUUBZ2A December   2018  – September 2021 TPS543C20A

 

  1.   Trademarks
  2. 1 Introduction
    1. 1.1 Before You Begin
  3. 2 Description
    1. 2.1 Typical End-User Applications
    2. 2.2 EVM Features
  4. 3 EVM Electrical Performance Specifications
  5. 4 Schematic
  6. 5 Test Equipment
  7. 6 BSR054EVM
  8. 7 List of Test Points, Jumpers, and Switch
  9. 8 Test Procedure
    1. 8.1 Line and Load Regulation Measurement Procedure
    2. 8.2 Efficiency
    3. 8.3 Equipment Shutdown
  10. 9 Performance Data and Typical Characteristic Curves
    1. 9.1 Efficiency
    2. 9.2 Power Loss
    3. 9.3 Load Regulation
    4. 9.4 Transient Response
    5. 9.5 Output Ripple
    6. 9.6 Control On
    7. 9.7 Control On and Off
    8. 9.8 Thermal Image
  11. 10EVM Assembly Drawing and PCB Layout
  12. 11List of Materials
  13. 12Revision History

8.1 Line and Load Regulation Measurement Procedure

  1. Connect VOUT to J2 and VOUT_GND to J2 Figure 6-1.
  2. Ensure that the electronic load is set to draw 0 ADC.
  3. Ensure the jumper provided on the EVM shorts on J3 before VIN is applied
  4. Connect VIN to J1 and VIN_GND to J1 Figure 6-1.
  5. Increase VIN from 0 V to 12 V using the digital multimeter to measure input voltage.
  6. Remove the jumper on J3 to enable the controller.
  7. Use the other digital multimeter or the oscilloscope to measure output voltage VOUT at TP3 and TP10.
    Table 8-1 List of Test Points for Line and Load Measurements
    Test PointNode NameDescription
    TP3LocS+Sense VOUT + locally across C11. Use for efficiency and ripple measurements
    TP10LocS-Sense VOUT - locally across C11. Use for efficiency and ripple measurements
    TP1PVINSense VIN + across C8
    TP4PGNDSense VIN - across C8
  8. Vary the load from 0 ADC to maximum rated output 40 ADC. VOUT must remain in regulation as defined in Table 3-1.
  9. Vary VIN from 5 V to 16 V. VOUT must remain in regulation as defined in Table 3-1.
  10. Decrease the load to 0 A.
  11. Put the jumper back on JP3 to disable the converter.
  12. Decrease VIN to 0 V or turn off the supply.