TIDT398 February   2025

 

  1.   1
  2.   Description
  3.   Features
  4.   Applications
  5. 1Test Prerequisites
    1. 1.1 Voltage and Current Requirements
    2. 1.2 Required Equipment
    3. 1.3 Considerations
    4. 1.4 Dimensions
    5. 1.5 Test Setup
  6. 2Testing and Results
    1. 2.1 Efficiency and Loss Graphs
    2. 2.2 Efficiency Data
    3. 2.3 Thermal Images
    4. 2.4 Bode Plots
    5. 2.5 Conducted Emissions (CISPR 25) Pre-Compliance Scans
  7. 3Waveforms
    1. 3.1 Output Voltage Ripple
    2. 3.2 Load Transients
    3. 3.3 Start-Up Sequence

3.2 Load Transients

Load transient response is shown in Figure 3-3 and Figure 3-4. In these waveforms, the output ripple before and after the load changes show the 10kHz switching frequency dithering activated to reduce conducted emissions.

PMP23452 Load Dynamics: 3.3V 20A Step and DumpFigure 3-3 Load Dynamics: 3.3V 20A Step and Dump
PMP23452 Load Dynamics: 5V 15A Step and DumpFigure 3-4 Load Dynamics: 5V 15A Step and Dump