SLVUCE3 april   2023 TPS54KB20

 

  1.    TPS54KB20EVM 25-A, Regulator Evaluation Module
  2.   Trademarks
  3. 1Introduction
    1. 1.1 Background
    2. 1.2 Before You Begin
    3. 1.3 Performance Characteristics Summary
  4. 2Configurations and Modifications
    1. 2.1 Output Voltage
    2. 2.2 Frequency and Operation Mode Setting (MSEL Pin)
  5. 3Test Setup and Results
    1. 3.1 Input/Output Connections
    2. 3.2 Efficiency
    3. 3.3 Output Voltage Regulation
    4. 3.4 Load Transient and Loop Response
    5. 3.5 Output Voltage Ripple
    6. 3.6 Start-up and Shutdown with EN
    7. 3.7 Thermal Performance
  6. 4Board Layout
    1. 4.1 Layout
  7. 5Schematic and Bill of Materials
    1. 5.1 Schematic
    2. 5.2 Bill of Materials

2 Configurations and Modifications

These evaluation modules are designed to provide access to the features of the TPS54KB20. The U2 design provides jumpers for testing different configurations. Jumper selections must be made prior to enabling the TPS54KB20.

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 MSEL pin resistor needs to be changed. Changes to the fSW, output voltage, output inductor, and output capacitors can require a change in the compensation. TPS54KB20 data sheet equations or WEBENCH can be used to calculate the output capacitor value, compensation, fSW, and inductance. Verify that all components have sufficient voltage and current ratings.