TIDT394 May   2024

 

  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
  6. 2Testing and Results
    1. 2.1 Efficiency Graphs
    2. 2.2 Efficiency Data
    3. 2.3 Thermal Images
    4. 2.4 Bode Plots
  7. 3Waveforms
    1. 3.1 Switching
    2. 3.2 Voltage Ripple
    3. 3.3 Short-Circuit Protection
    4. 3.4 Load Transients
    5. 3.5 Start-up Sequence
    6. 3.6 Current Monitor Output

3.3 Short-Circuit Protection

Figure 3-4 and Figure 3-5 illustrate how the PMP23389 behaves under short-circuit protection. Output across J4 was shorted momentarily in order capture meaningful data on oscilloscope to illustrate that short-circuit protection functions effectively as the output voltage returns to the steady state. The short-circuit protection is leveraged by the FAULT pin of the TPS7H5002-SP, which is an optional functionality.

PMP23389 Short-Circuit ProtectionFigure 3-4 Short-Circuit Protection
PMP23389 Short-Circuit Protection, Zoomed in WindowFigure 3-5 Short-Circuit Protection, Zoomed in Window