TIDT318 January   2023

 

  1.   Description
  2.   Features
  3.   Applications
  4. 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
  5. 2Testing and Results
    1. 2.1 Efficiency Graphs
    2. 2.2 Thermal Images
    3. 2.3 Bode Plots
  6. 3Waveforms
    1. 3.1 Switching
    2. 3.2 Load Transients

2.3 Bode Plots

All three Bode plots in this section are shown at 14-V input at 3.3-V output.

Figure 2-7 shows the Bode plot at 0-A load. The Bode plot in Figure 2-8 is created at a 30-A load and the Bode plot in Figure 2-9 was created at the maximum 60-A load.

Crossover increases with load from 30 kHz at no load to 46 kHz at the maximum 60-A load, but phase margin is always at least 96 degrees and gain margin is more than 10 dB.

GUID-20221208-SS0I-L8X7-J3XJ-F6MQTKXFG6WW-low.jpg Figure 2-7 Bode Plot, 0-A Load
GUID-20221208-SS0I-LJ3S-M30Q-JHFJMLHNQKQD-low.jpg Figure 2-8 Bode Plot, 30-A Load
GUID-20221208-SS0I-WC97-WVDH-WCKMV85HBGSR-low.jpg Figure 2-9 Bode Plot at Maximum 60-A Load