SLUUCY1 November   2023

 

  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 Configurations and Modifications
      1. 2.1.1 Output Voltage
      2. 2.1.2 Switching Frequency (FSEL Pin)
      3. 2.1.3 Current Limit, Soft-Start Time, and Internal Compensation (MODE Pin)
      4. 2.1.4 Adjustable UVLO
    2. 2.2 Input/Output Connections
    3. 2.3 Best Practices
  8. 3Implementation Results
    1. 3.1 Performance Characteristics Summary
  9. 4Hardware Design Files
    1. 4.1 Schematic
    2. 4.2 PCB Layout
      1. 4.2.1 Layout
    3. 4.3 Bill of Materials
  10. 5Additional Information
    1.     Trademarks

2.1 Configurations and Modifications

These evaluation modules are designed to provide access to the features of the TPS543B25T. The U1 design provides jumpers for testing different configurations. Jumper selections must be made prior to enabling the TPS543B25T.

If a desired configuration is not available, then some modifications can be made to this module. When modifications are made to the components on the EVM, the internal compensation option selected with the MODE pin resistor needs to be changed. Changes to the fSW, output voltage, output inductor, and output capacitors require a change in the compensation. TPS543B25T data sheet equations or WEBENCH can be used to calculate the output capacitor value, compensation, fSW, and inductance. Verify all components have sufficient voltage and current ratings.