SLUUBE4B February   2016  – August 2021 TPS548D22

 

  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 Equipment
  7. 6 The PWR-784EVM
  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 Load Regulation
    3. 9.3 Line Regulation
    4. 9.4 Transient Response
    5. 9.5 Output Ripple
    6. 9.6 Control On
    7. 9.7 Control 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 J3 and VOUT_GND to J5 Figure 6-1.
  2. Ensure that the electronic load is set to draw 0 ADC.
  3. Connect VIN to J1 and VIN_GND to J2 Figure 6-1.
  4. Increase VIN from 0 V to 12 V using the digital multimeter to measure input voltage.
  5. Use the other digital multimeter to measure output voltage VOUT at TP2 and TP10.
    Table 8-1 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
  6. Vary the load from 0 ADC to maximum rated output 40 ADC. VOUT must remain in regulation as defined in Table 3-1.
  7. Vary VIN from 5 V to 16 V. VOUT must remain in regulation as defined in Table 3-1.
  8. Decrease the load to 0 A.
  9. Decrease VIN to 0 V or turn off the supply.