SLVT230 November   2025

 

  1.   1
  2.   Description
  3.   Resources
  4.   Features
  5.   Applications
  6.   6
  7. 1Test Prerequisites
    1. 1.1 Voltage and Current Requirements
    2. 1.2 Required Equipment
    3. 1.3 Considerations
    4. 1.4 Safety Considerations
    5. 1.5 Dimensions
    6. 1.6 Test Setup
  8. 2Testing and Results
    1. 2.1 Efficiency Graphs
    2. 2.2 Efficiency Data
    3. 2.3 Thermal Images
    4. 2.4 Bode Plots
  9. 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 Shut-down Sequence
  10. 4Static Regulation
  11. 5Transformer Details
    1. 5.1 Material List
    2. 5.2 Winding Details
    3. 5.3 Schematic
    4. 5.4 Winding Instructions
    5. 5.5 Details about Core, Air Gap and Bobbin
    6. 5.6 Bobbin Mechanical Details
  12.   Trademarks

3.4 Start-Up Sequence

Start-up behavior is shown in Figure 3-6 through Figure 3-8.

C3: output voltage, C4: output current

PMP31376 Start-Up at 325VDC and Zero Load Figure 3-6 Start-Up at 325VDC and Zero Load
PMP31376 Start-Up at 325VDC, When the Output is Connected to 6Ω Resistor Figure 3-7 Start-Up at 325VDC, When the Output is Connected to 6Ω Resistor
PMP31376 Start-up at 325VDC, with Output Connected to the Battery, and the Charging Current set to 2A Figure 3-8 Start-up at 325VDC, with Output Connected to the Battery, and the Charging Current set to 2A