TIDT234 November   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 and Power Loss Graphs
    2. 2.2 Efficiency Data
    3. 2.3 Thermal Images
  6. 3Waveforms
    1. 3.1 Switching
    2. 3.2 Output Voltage Ripple
    3. 3.3 Load Transients
    4. 3.4 Start-up Sequence
    5. 3.5 Conducted EMI Performance

3.4 Start-up Sequence

The following set of figures show the start-up behavior between PFM and FPWM modes at 30-V input, at no load and 1-A load conditions.

GUID-20210309-CA0I-4JS8-BHDG-7RRDG6LPDNZT-low.pngFigure 3-15 Start-up Into No Load, 30-V Input, PFM-Mode
GUID-20210309-CA0I-VBSL-ZN1W-CL2CF33PPSHW-low.pngFigure 3-16 Start-up Into No Load, 30-V Input, FPWM-Mode
GUID-20210309-CA0I-R3ZP-GVBX-CDC4SBSHJ3KD-low.pngFigure 3-17 Start-up Into 1-A Constant-Current Load, 30-V Input, PFM-Mode
GUID-20210309-CA0I-DVM5-0HNS-N4LTVCR7RHW0-low.pngFigure 3-18 Start-up Into 1-A Constant-Current Load, 30-V Input, FPWM-Mode