SLVT235 January   2025

 

  1.   1
  2.   Description
  3.   Resources
  4.   Features
  5.   Applications
  6. 1Test Prerequisites
    1. 1.1 Voltage and Current Requirements
    2. 1.2 Required Equipment
    3. 1.3 Safety Warning
    4. 1.4 Dimensions
    5. 1.5 Test Setup
  7. 2Testing and Results
    1. 2.1 Efficiency Graphs
    2. 2.2 Efficiency Data
    3. 2.3 Thermal Images
  8. 3Waveforms
    1. 3.1 Switching
    2. 3.2 Start-up Sequence
    3. 3.3 Undervoltage Protection
    4. 3.4 Wide Range Adjustable Output Voltage Capability
  9. 4Trademarks

3.2 Start-up Sequence

Start-up behavior waveforms are shown in Figure 3-9.

CH1 (Dark Blue): LS PWM

CH2 (Light Blue): Primary switching node voltage

CH3 (Green): Primary resonant current

CH4 (Red): Output voltage

PMP41140 Soft-Start Operating Waveforms With 320V Input, 15V at 9A Constant Current LoadFigure 3-9 Soft-Start Operating Waveforms With 320V Input, 15V at 9A Constant Current Load