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

3.2 Voltage Ripple

Figure 3-2 and Figure 3-3 illustrate the PMP23389 voltage ripple waveforms. Output voltage ripple taken across C10 and input voltage ripple taken across J2 with 330μF capacitor across input to filter out high frequencies.

PMP23389 Output Voltage Ripple (AC Coupled) With 12V input and 15A Load; Measured 23.2mV Peak to PeakFigure 3-2 Output Voltage Ripple (AC Coupled) With 12V input and 15A Load; Measured 23.2mV Peak to Peak
PMP23389 Input Voltage Ripple (AC Coupled) With 12V Input and 15A Load; Measured 468mV Peak to PeakFigure 3-3 Input Voltage Ripple (AC Coupled) With 12V Input and 15A Load; Measured 468mV Peak to Peak