SLVU728A May   2012  – December 2021 TPS53318 , TPS53319

 

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

4.2 Recommended Test Setup

GUID-D2463202-FB97-47D1-B116-0161D6BA6C38-low.gifFigure 4-2 TPS53319EVM-136 Recommended Test Setup

Figure 4-2 is the recommended test setup to evaluate the TPS53319EVM-136. 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. Make sure VIN is initially set to 0 V and connected as shown in Figure 4-2.
  2. Connect a voltmeter V1 at TP1 (VIN) and TP10 (GND) to measure the input voltage.
  3. Connect a current meter A1 to measure the input current.

Output Connections

  1. Connect the load to J2 and set the load to constant resistance mode to sink 0 ADC before VIN is applied.
  2. Connect a voltmeter V2 at TP2 (VOUT) and TP11 (GND) to measure the output voltage.