TIDT224 March   2021

 

  1. 1Description
  2. 2Test Prerequisites
    1. 2.1 Voltage and Current Requirements
    2. 2.2 Required Equipment
  3. 3Testing and Results
    1. 3.1 Thermal Images
    2. 3.2 Efficiency and Power Dissipation Graphs
    3. 3.3 Efficiency and Power Dissipation Data
    4. 3.4 Voltage Regulation Graphs
    5. 3.5 Cross-Load Voltage Regulation Data and Efficiency
  4. 4Waveforms
    1. 4.1 Start-up Sequence
    2. 4.2 Switch Node
    3. 4.3 Output Voltage Ripple
    4. 4.4 Load Transients

4.1 Start-up Sequence

The following image shows the output voltage start-up waveforms (Vout1 in Blue, Vout2 in Yellow) after the application of 12-V input (Red) with each output loaded to 100 mA.

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5 V/div, 5 ms/div
Figure 4-1 Output Voltage Start-up Waveforms

The following image shows the output voltage start-up waveforms (Vout1 in Blue, Vout2 in Yellow) after the application of 12-V input (Red) with each output loaded to 10 mA.

GUID-20210223-CA0I-F1R5-KLJ3-DH6SD5N7J6V2-low.jpg
5 V/div, 5 ms/div
Figure 4-2 Output Voltage Start-up Waveforms

The following image shows the output voltage start-up waveforms (Vout1 in Blue, Vout2 in Yellow) after the application of 12-V input (Red) with each output loaded to 0 mA

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5 V/div, 5 ms/div
Figure 4-3 Output Voltage Start-up Waveform