TIDT435 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
  6. 2Testing and Results
    1. 2.1 Efficiency Graphs
    2. 2.2 Efficiency Data
    3. 2.3 Thermal Images
    4. 2.4 Bode Plots
    5. 2.5 Light Load Efficiency Optimization
    6. 2.6 Midpoint Voltage Balance Control of Input Capacitors
  7. 3Waveforms
    1. 3.1 Switching
    2. 3.2 Output Voltage Ripple
    3. 3.3 Turn ON and OFF
    4. 3.4 Load Transients
  8.   Trademarks

2.4 Bode Plots

Bode plot are shown in Figure 2-10 through Figure 2-12. The test condition is 800Vin, 13.5Vout, 120A Iout, room temperature. As shown in Figure 2-12, the gain margin is -17.98dB. The phase margin is 70.33 degrees with 2.16kHz bandwidth.

PMP41139 Power Stage Bode PlotFigure 2-10 Power Stage Bode Plot
PMP41139 Compensator Bode PlotFigure 2-11 Compensator Bode Plot
PMP41139 Converter Bode PlotFigure 2-12 Converter Bode Plot