SNVU589A December   2017  – January 2022

 

  1.   Trademarks
  2. 1 Introduction
  3. 2 Description
    1. 2.1 Typical Applications
    2. 2.2 Features
  4. 3 Electrical Performance Specifications
  5. 4 Schematic
  6. 5 Test Setup
    1. 5.1 Test Equipment
    2. 5.2 Recommended Test Setup
  7. 6 Configurations
    1. 6.1 Switching Frequency Selection
    2. 6.2 Soft-Start Selection
    3. 6.3 Mode Selection
    4. 6.4 Enable Selection
  8. 7 Test Procedure
    1. 7.1 Line/Load Regulation and Efficiency Measurement Procedure
    2. 7.2 Control Loop Gain and Phase Measurement Procedure
    3. 7.3 List of Test Points
    4. 7.4 Equipment Shutdown
  9. 8 Performance Data and Typical Characteristic Curves
    1. 8.1 Efficiency
    2. 8.2 Load Regulation
    3. 8.3 Output Transient
    4. 8.4 Output Ripple
    5. 8.5 Switching Node
    6. 8.6 Enable Turn-On/Turn-Off
    7. 8.7 Output 1.1-V Prebias Turn-On
    8. 8.8 Bode Plot
    9. 8.9 Thermal Image
  10. 9 EVM Assembly Drawing and PCB Layout
  11. 10Bill of Materials
  12. 11Revision History

5.2 Recommended Test Setup

GUID-A7D18F85-52F1-407A-88BF-A5CDB92F12D7-low.gifFigure 5-2 TPS53119EVM-690 Recommended Test Setup

Figure 5-2 is the recommended test setup to evaluate the TPS53119EVM-690. Working at an ESD workstation, make sure that any wrist straps, bootstraps, or mats are connected referencing the user to earth ground before power is applied to the EVM.

Input Connections:

  1. Prior to connecting the dc input source VIN, it is advisable to limit the source current from VIN to 10 A maximum. Ensure that VIN is initially set to 0 V and connected as shown in Figure 5-2.
  2. Connect a voltmeter V1 at TP7 (VIN) and TP8 (GND) to measure the input voltage.
  3. Connect a current meter A1 to measure the input current.

Output Connections:

  1. Connect load to J5, and set Load to constant resistance mode to sink 0 Adc before VIN is applied.
  2. Connect a voltmeter V2 at TP14 (VOUT) and TP15 (GND) to measure the output voltage.

Other Connections:
Place a fan as shown in Figure 5-2 and turn it on, ensuring that air is flowing across the EVM.