TIDT447 June   2025

 

  1.   1
  2.   Description
  3.   Resources
  4.   Features
  5.   Applications
  6. 1Test Prerequisites
    1. 1.1 Voltage and Current Requirements
    2. 1.2 Required Equipment
    3. 1.3 Safety Considerations
    4. 1.4 Dimensions
  7. 2Testing and Results
    1. 2.1 Efficiency Graphs
    2. 2.2 Efficiency Data
    3. 2.3 Thermal Images
    4. 2.4 Bode Plots
  8. 3Waveforms
    1. 3.1 Switching
    2. 3.2 Output Voltage Ripple
    3. 3.3 Input Voltage Ripple
    4. 3.4 Load Transients

2.4 Bode Plots

All of the bode-plots are shown at 12V output and at 25A load. Bode plots at different loads tends to be very similar with slight changes of noise level, increase in crossover frequency at higher load, and so on. Both the phase margin and gain margin tend to be the same at various loads.

PMP23591 36VIN, 25A Load Current, Crossover Frequency 51.25kHz, 77.64° Phase Margin, 11.69dB Gain Margin Figure 2-5 36VIN, 25A Load Current, Crossover Frequency 51.25kHz, 77.64° Phase Margin, 11.69dB Gain Margin
PMP23591 48VIN, 25A Load Current, Crossover Frequency 49.78kHz, 77.73° Phase Margin, 11.59dB Gain Margin Figure 2-6 48VIN, 25A Load Current, Crossover Frequency 49.78kHz, 77.73° Phase Margin, 11.59dB Gain Margin
PMP23591 60VIN, 25A Load Current, Crossover Frequency 49.57kHz, 77.73° Phase Margin, 11.86dB Gain Margin Figure 2-7 60VIN, 25A Load Current, Crossover Frequency 49.57kHz, 77.73° Phase Margin, 11.86dB Gain Margin