SLVUCX1 September   2024 TPS548B23

 

  1.   1
  2.   Description
  3.   Get Started
  4.   Features
  5.   Applications
  6.   6
  7. 1Evaluation Module Overview
    1. 1.1 Introduction
    2. 1.2 Kit Contents
    3. 1.3 Specification
    4. 1.4 Device Information
  8. 2Hardware
    1. 2.1 Configurations and Modifications
      1. 2.1.1 Multifunction Configuration (CFG1-5) Pins Selection
      2. 2.1.2 Setting Output Voltage Using External Feedback Configuration
  9. 3Implementation Results
    1. 3.1 Test Setup and Results
      1. 3.1.1 Input and Output Connections
      2. 3.1.2 Efficiency
      3. 3.1.3 Output Voltage Regulation
      4. 3.1.4 Load Transient and Loop Response
      5. 3.1.5 Output Voltage Ripple
      6. 3.1.6 Start-up and Shutdown with EN
      7. 3.1.7 Thermal Performance
  10. 4Hardware Design Files
    1. 4.1 Schematic
    2. 4.2 Board Layout
      1. 4.2.1 Layout
    3. 4.3 Bill of Materials
  11. 5Additional Information
    1. 5.1 Trademarks

3.1.4 Load Transient and Loop Response

The response to load transients for both designs is shown in Figure 3-5 and Figure 3-6. The current step is from 5A to 15A and the current step slew rate is 1A/µs. An electronic load is used to provide a DC 5A load and the load transient circuit on the EVM is used to provide a 10A step. The VOUT voltage is measured using TP10.

shows the loop characteristics. Gain and phase plots are shown for VIN voltage of 12V and a 20A load.

TPS548B23EVM Transient ResponseFigure 3-5 Transient Response
TPS548B23EVM Bode Plot – 10A LoadFigure 3-6 Bode Plot – 10A Load