SLUU521A August   2011  – November 2021 TPS53353

 

  1.   Trademarks
  2. 1 Description
    1. 1.1 Typical Application
    2. 1.2 Features
  3. 2 Electrical Performance Specifications
  4. 3 Schematic
  5. 4 Test Setup
    1. 4.1 Test Equipment
    2. 4.2 Recommended Test Setup
  6. 5 Configurations
    1. 5.1 Switching Frequency Selection
    2. 5.2 Soft-Start Selection
    3. 5.3 Mode Selection
    4. 5.4 Enable Selection
  7. 6 Test Procedure
    1. 6.1 Line and Load Regulation and Efficiency Measurement Procedure
    2. 6.2 Control Loop Gain and Phase Measurement Procedure
    3. 6.3 Test Point List
    4. 6.4 Equipment Shutdown
  8. 7 Performance Data and Typical Characteristic Curves
    1. 7.1  Efficiency
    2. 7.2  Load Regulation
    3. 7.3  Load 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 Prebias Turn-On
    10. 7.10 Output Overcurrent and Short-Circuit Protection
    11. 7.11 Bode Plot
    12. 7.12 Thermal Image
  9. 8 EVM Assembly Drawing and PCB Layout
  10. 9 Bill of Materials
  11. 10Revision History

6.1 Line and Load Regulation and Efficiency Measurement Procedure

  1. Set up the EVM as described in Section 4 and Figure 4-2.
  2. Ensure that the load is set to constant resistance mode and to sink 0 ADC.
  3. Ensure that all jumpers configuration settings are per Section 5.
  4. Ensure that the jumper provided in the EVM shorts on J2 before VIN is applied.
  5. Increase VIN from 0 V to 12 V, using V1 to measure input voltage.
  6. Remove the jumper on J2 to enable the controller.
  7. Use V2 to measure VOUT voltage.
  8. Vary the load from 0 ADC to 20 ADC; VOUT must remain in load regulation.
  9. Vary VIN from 8 V to 14 V; VOUT must remain in line regulation.
  10. Put the jumper on J2 to disable the controller.
  11. Decrease the load to 0 A.
  12. Decrease VIN to 0 V.