TIDT333 may   2023

 

  1.   Description
  2.   Features
  3.   Applications
  4. 1Test Prerequisites
    1. 1.1 Voltage and Current Requirements
    2. 1.2 Input and Output Signals
  5. 2Testing and Results
    1. 2.1 Efficiency Graphs
    2. 2.2 Efficiency Data
    3. 2.3 Thermal Images
    4. 2.4 Bode Plots
  6. 3Waveforms
    1. 3.1 Switching
    2. 3.2 Output Voltage Ripple
    3. 3.3 Short-Circuit Protection
    4. 3.4 Load Transients
    5. 3.5 Start-Up

2.4 Bode Plots

The feedback loop frequency response was measured with a 5-A load at different input voltage conditions and is shown in the following figures.

Table 2-4 Feedback Loop Frequency Response
Condition Unity Gain Bandwidth (kHz) Phase Margin (°) Gain Margin (dB)
50 VIN, 5-A load 6.9 80 22.5
100 VIN, 5-A load 15.6 69 17.7
150 VIN, 5-A load 27 46 9.4
GUID-20230427-SS0I-HDSZ-GTSH-XB1S9NXKPLQH-low.png Figure 2-6 Bode Plot, 50 VIN, 5-A Load
GUID-20230427-SS0I-FWHL-KQ5R-MG5NFVDV6MRS-low.png Figure 2-7 Bode Plot, 100 VIN, 5-A Load
GUID-20230427-SS0I-XHJ5-PJZF-DNLW0FZFQZRR-low.png Figure 2-8 Bode Plot, 150 VIN, 5-A Load