SLUUCK9 april   2023 TPSM843B22

 

  1.    TPSM843B22EVM 20-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 Switching Frequency (FSEL Pin)
    3. 2.3 Current Limit, Soft-Start Time, and Internal Compensation (MSEL Pin)
    4. 2.4 Enable, UVLO (EN Pin)
  5. 3Test Setup and Results
    1. 3.1 Input and Output Connections
    2. 3.2 Efficiency
    3. 3.3 Output Voltage Regulation
    4. 3.4 Load Transient and Loop Response
    5. 3.5 Input Voltage Ripple
    6. 3.6 Start-up and Shutdown with EN
    7. 3.7 Start-up and Shutdown with VIN
    8. 3.8 Start-up Into Pre-Bias
    9. 3.9 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

This evaluation module is designed to provide access to the features of the TPSM843B22. There are jumpers provided for testing different configurations. Jumper selections must be made prior to enabling the TPSM843B22.

If a desired configuration is not available, 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 can need to be changed. Changes to the fSW, output voltage, and output capacitors can require a change in the compensation. TPSM843B22 data sheet equations or WEBENCH can be used to calculate the output capacitor value, compensation, and fSW. Ensure all components have sufficient voltage and current ratings.