SLUUD53 September   2024

 

  1.   1
  2.   Description
  3.   Features
  4.   Applications
  5.   5
  6. 1Evaluation Module Overview
    1. 1.1 Introduction
    2. 1.2 Kit Contents
    3. 1.3 Specification
    4. 1.4 Device Information
  7. 2Hardware
    1. 2.1 Test Setup and Procedure
      1. 2.1.1 EVM Connections
      2. 2.1.2 Test Equipment
      3. 2.1.3 Recommended Test Setup
        1. 2.1.3.1 Input Connections
        2. 2.1.3.2 Output connections
      4. 2.1.4 Test Procedure
        1. 2.1.4.1 Line and Load Regulation, Efficiency
  8. 3Implementation Results
    1. 3.1 Performance Data and Results
      1. 3.1.1 EVM Characteristics
      2. 3.1.2 Conversion Efficiency
      3. 3.1.3 Operating Waveforms
        1. 3.1.3.1 Start-Up and Shutdown with EN
        2. 3.1.3.2 Start-Up with VIN
        3. 3.1.3.3 Load Transient Response
        4. 3.1.3.4 Output Voltage Ripple
      4. 3.1.4 Thermal Performance
  9. 4Hardware Design Files
    1. 4.1 Schematic
    2. 4.2 PCB Layout
      1. 4.2.1 Multi-Layer Stackup
      2. 4.2.2 Component Drawings
    3. 4.3 Bill of Materials
  10. 5Compliance Information
    1. 5.1 Compliance and Certifications
  11. 6Additional Information
    1. 6.1 Trademarks
  12. 7Related Documentation

1.3 Specification

A summary of the TPS51388EVM performance specifications is provided in Table 1-1. Specifications are given for 19.5V input voltage and 5.15V output voltage, unless otherwise noted. The ambient temperature is 25°C for all measurement, unless otherwise noted.

Table 1-1 TPS51388EVM Performance Specifications Summary
SpecificationsTest ConditionsMINTYPMAXUnit
VINInput voltage

5.5

19.5

24

V
CH1Output voltage

5.1

5.15

5.2

V
Operating frequency1VIN = 12V, IOUT = 12A, MODE = High600kHz
Operating frequency2VIN = 12V, IOUT = 12A, MODE = Low

1000

kHz

Output current range012A
Overcurrent limitVIN = 12V, LOUT = 1.5µH

12.5

14

16

A

The schematic of an TPS51388-based synchronous buck converter is shown in Figure 1-1.

TPS51388EVM TPS51388 Synchronous Buck Regulator Simplified SchematicFigure 1-1 TPS51388 Synchronous Buck Regulator Simplified Schematic