SLUUBG4A July   2016  – August 2021 TPS549D22

 

  1.   Trademarks
  2. 1 Introduction
  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 Setup
    1. 5.1 Test and Configuration Software
      1. 5.1.1 Description
      2. 5.1.2 Features
  7. 6 Test Equipment
  8. 7 PWR-784EVM
  9. 8 List of Test Points, Jumpers, and Switch
  10. 9 EVM Configuration Using the Fusion GUI
  11. 10Test Procedure
    1. 10.1 Line and Load Regulation Measurement Procedure
    2. 10.2 Efficiency
    3. 10.3 Equipment Shutdown
  12. 11Performance Data and Typical Characteristic Curves
    1. 11.1 Efficiency
    2. 11.2 Load Regulation
    3. 11.3 Line Regulation
    4. 11.4 Transient Response
    5. 11.5 Output Ripple
    6. 11.6 Control On
    7. 11.7 Control Off
    8. 11.8 Thermal Image
  13. 12Fusion GUI
  14. 13EVM Assembly Drawing and PCB Layout
  15. 14List of Materials
  16. 15Revision History

10.1 Line and Load Regulation Measurement Procedure

Use the following procedures for line and load regulation measurement.

  1. Connect VOUT to J3 and VOUT_GND to J5 Figure 7-1.
  2. Ensure that the electronic load is set to draw 0 ADC.
  3. Connect VIN to J1 and VIN_GND to J2 Figure 7-1.
  4. Connect the USB interface adapter as shown in Figure 7-3.
  5. Increase VIN from 0 V to 12 V using the digital multimeter to measure input voltage.
  6. Launch the Fusion GUI software. See the screen shots in Section 12 for more information.
  7. Configure the EVM operating parameters as desired.
  8. Use the other digital multimeter or the oscilloscope to measure output voltage VOUT at TP2 and TP10 as you vary the external voltage source.
    Table 10-1 List of Test Points for Line and Load Measurements
    Test PointNode NameDescription
    TP2LocS+Sense VOUT + locally across C5. Use for efficiency and ripple measurements
    TP10LocS-Sense VOUT - locally across C5. Use for efficiency and ripple measurements
    TP4PVINSense VIN + across C10
    TP13PGNDSense VIN - across C10
  9. Vary the load from 0 ADC to maximum rated output 40 ADC. VOUT must remain in regulation as defined in Table 3-1.
  10. Vary VIN from 5 V to 16 V. VOUT must remain in regulation as defined in Table 3-1.
  11. Decrease the load to 0 A.
  12. Decrease VIN to 0 V or turn off the supply.