TIDT287 August   2022

 

  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. 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 Voltage Ripple
    3. 3.3 Load Transients
    4. 3.4 Start-Up Sequence
    5. 3.5 Output Voltage Step

3.3 Load Transients

Figure 3-17 through Figure 3-19 show the output voltage response, at 40-V output, 0-A to 2.5-A load step.

GUID-20220815-SS0I-31TM-FXVX-0DKNRC9M3LQF-low.pngFigure 3-17 18-V Input, 5 ms/div
CH2: Output Voltage, 500 mV/div
CH4: Output Current, 1 A/div, Measured +420 mV and –480 mV
GUID-20220815-SS0I-B2CF-RNRC-NMGRW4BMZJHN-low.pngFigure 3-19 36-V Input, 5 ms/div
CH2: Output Voltage, 500 mV/div
CH4: Output Current, 1 A/div, Measured +3000 mV and –360 mV
GUID-20220815-SS0I-V1R0-V8CC-QMZ0BWWFLWJF-low.pngFigure 3-18 24-V Input, 5 ms/div
CH2: Output Voltage, 500 mV/div
CH4: Output Current, 1 A/div, Measured +360 mV and –400 mV

Figure 3-20 through Figure 3-22- show the output voltage response, at 19-V output, 0-A to 4-A load step.

GUID-20220815-SS0I-HP7H-P7TT-CPKW3XSFKM7J-low.pngFigure 3-20 18-V Input, 5 ms/div
CH2: Output Voltage, 500 mV/div
CH4: Output Current, 2 A/div, Measured +400 mV and –500 mV
GUID-20220815-SS0I-D6QQ-DWD8-W6QL8SN6PFHF-low.pngFigure 3-22 36-V Input, 5 ms/div
CH2: Output Voltage, 500 mV/div
CH4: Output Current, 2 A/div, Measured +260 mV and –320 mV
GUID-20220815-SS0I-WFXK-6JCT-WMRXTRMGLNPR-low.pngFigure 3-21 24-V Input, 5 ms/div
CH2: Output Voltage, 500 mV/div
CH4: Output Current, 2 A/div, Measured +360 mV and –420 mV