TIDT205 February   2021

 

  1. 1Description
  2. 2Test Prerequisites
    1. 2.1 Voltage and Current Requirements
    2. 2.2 Considerations
    3. 2.3 Dimensions
  3. 3Testing and Results
    1. 3.1 Efficiency Graphs
    2. 3.2 Efficiency Data
    3. 3.3 Load Regulation
    4. 3.4 Thermal Image
    5. 3.5 Bode Plots
    6. 3.6 Conducted Emissions Testing (CISPR 25, Class 5)
  4. 4Waveforms
    1. 4.1 Switching
    2. 4.2 Output Voltage Ripple
    3. 4.3 Load Transients
    4. 4.4 Start-up Sequence
    5. 4.5 Termination Sequence

4.4 Start-up Sequence

The following images show the start-up profiles of each converter. Smooth start-up is observed for each converter.

CH 2 (Pink trace) Input Voltage

CH 3 (Blue trace): Output Voltage

GUID-20210205-CA0I-5Z7B-RVFK-XSK0JLFF4FJV-low.jpgFigure 4-16 Start-up (VOUT = 5 V)
GUID-20210205-CA0I-DRNQ-7BFL-9GTSP4MZHT47-low.jpgFigure 4-18 Start-up (VOUT = 1.8 V)
GUID-20210205-CA0I-GCZ5-VL75-SZ5ZNDZPNN52-low.jpgFigure 4-20 Start-up (VOUT = 1.175 V)
GUID-20210205-CA0I-G059-BH0G-TS8FZP7TTM0C-low.jpgFigure 4-17 Start-up (VOUT = 3.3 V)
GUID-20210205-CA0I-DJHM-HXHD-HK2WFNB1G65K-low.jpgFigure 4-19 Start-up (VOUT = 1.35 V)