SLVT249 May   2026

 

  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 Safety Warning
    3. 1.3 Dimensions
    4. 1.4 Test Setup
  8. 2Testing and Results
    1. 2.1 Efficiency Graphs
    2. 2.2 Efficiency Data
    3. 2.3 Thermal Images
      1. 2.3.1 PFC Stage
      2. 2.3.2 Thermal Image of System LLC Stage
      3. 2.3.3 Thermal Image of Backlight LLC Stage
    4. 2.4 PF Value
  9. 3Waveforms
    1. 3.1 Switching
      1. 3.1.1 PFC Switching waveform
      2. 3.1.2 System LLC Switching Waveform
      3. 3.1.3 Backlight Switching Waveform
    2. 3.2 Output Voltage Ripple
      1. 3.2.1 System LLC Output Ripple
      2. 3.2.2 Backlight LLC Output Ripple
    3. 3.3 Dynamic Response
      1. 3.3.1 Dynamic Response of the System LLC
      2. 3.3.2 Dynamic Response of the Backlight LLC
  10.   Trademarks

3.1.1 PFC Switching waveform

Interleave PFC Switching behavior is shown in Figure 3-1 and Figure 3-2.

CH1 is the switching waveform of phase A, and CH 2 is the switching waveform of phase B. CH6 is the combination current waveform of two inductors.

PMP23488 Switching Waveform of PFC Stage at 115Vac / 60Hz Input Voltage Figure 3-1 Switching Waveform of PFC Stage at 115Vac / 60Hz Input Voltage
PMP23488 Switching Waveform of PFC Stage at 230Vac / 50Hz Input Voltage Figure 3-2 Switching Waveform of PFC Stage at 230Vac / 50Hz Input Voltage