TIDT332 May   2024

 

  1.   1
  2.   Description
  3.   Features
  4.   Applications
  5. 1Test Prerequisites
    1. 1.1 Voltage and Current Requirements
    2. 1.2 Required Equipment
    3. 1.3 Dimensions
    4. 1.4 Test Setup
      1. 1.4.1 Hardware Setup
      2. 1.4.2 Firmware Setup
      3. 1.4.3 Test Static Operation
      4. 1.4.4 Test Soft-Start Process
      5. 1.4.5 Test Voltage Balance Performance
      6. 1.4.6 Test Bidirectional Transition Process
  6. 2Testing and Results
    1. 2.1 Efficiency Graphs
    2. 2.2 Efficiency Data
    3. 2.3 Thermal Images
  7. 3Waveforms
    1. 3.1 Switching
    2. 3.2 Bidirectional Transient
    3. 3.3 Start-Up Sequence

3.1 Switching

Figure 3-1 through Figure 3-12 show the switching behavior waveforms. Each waveform reflects the following parameters:

  • Ch 1 (dark blue) is Vsw_priL: switching voltage of primary low-side half bridge
  • Ch 2 (light blue) is Vsw_priH: switching voltage of primary high-side half bridge
  • Ch 3 (purple) is Vsw_sr: switching voltage of secondary SR MOSFET
  • Ch 4 (green) is Ip: Current of primary side
PMP41037 800VIN, Forward Operating With 0A LoadFigure 3-1 800VIN, Forward Operating With 0A Load
PMP41037 800VIN, Forward Operating With 0A Load (Zoom in at Rising Edge)Figure 3-2 800VIN, Forward Operating With 0A Load (Zoom in at Rising Edge)

PMP41037 800VIN, Forward Operating With 0A Load (Zoom in at Falling Edge)

Figure 3-3 800VIN, Forward Operating With 0A Load (Zoom in at Falling Edge)
PMP41037 800VIN, Forward Operating With 80A LoadFigure 3-4 800VIN, Forward Operating With 80A Load
PMP41037 800VIN, Forward Operating With 80A Load (Zoom in at Rising Edge)Figure 3-5 800VIN, Forward Operating With 80A Load (Zoom in at Rising Edge)
PMP41037 800VIN, Forward Operating With 80A Load (Zoom in at Falling Edge)Figure 3-6 800VIN, Forward Operating With 80A Load (Zoom in at Falling Edge)
PMP41037 9VIN, Backward Operating With 0.1A LoadFigure 3-7 9VIN, Backward Operating With 0.1A Load
PMP41037 9VIN, Backward Operating With 0.1A Load (Zoom in at Rising Edge)Figure 3-8 9VIN, Backward Operating With 0.1A Load (Zoom in at Rising Edge)
PMP41037 9VIN, Backward Operating With 0.1A Load (Zoom in at Falling Edge)Figure 3-9 9VIN, Backward Operating With 0.1A Load (Zoom in at Falling Edge)
PMP41037 9VIN, Backward Operating With 1.4A LoadFigure 3-10 9VIN, Backward Operating With 1.4A Load
PMP41037 9VIN, Backward Operating With 1.4A Load (Zoom in at Rising Edge)Figure 3-11 9VIN, Backward Operating With 1.4A Load (Zoom in at Rising Edge)
PMP41037 9VIN, Backward Operating With 1.4A Load (Zoom in at Falling Edge)Figure 3-12 9VIN, Backward Operating With 1.4A Load (Zoom in at Falling Edge)