TIDT308 October   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. 1.5 Test Setup
  5. 2Testing and Results
    1. 2.1 Efficiency Graphs
    2. 2.2 Efficiency Data
    3. 2.3 Thermal Images
      1. 2.3.1 Top Side
      2. 2.3.2 Bottom Side
    4. 2.4 Bode Plots
  6. 3Waveforms
    1. 3.1 Switching
      1. 3.1.1 Secondary Side
      2. 3.1.2 Primary Side
        1. 3.1.2.1 Transistor Q8 Drain-Source
        2. 3.1.2.2 HS2-Pin of U1
          1. 3.1.2.2.1 Undershoot
          2. 3.1.2.2.2 Overshoot
    2. 3.2 Output Voltage Ripple
    3. 3.3 Load Transients
    4. 3.4 Start-Up Sequence
      1. 3.4.1 Full Load
      2. 3.4.2 Zero Load
      3. 3.4.3 Overload
    5. 3.5 Shutdown Sequence

3.1.1 Secondary Side

The waveform in Figure 3-1 represents the switching behavior measured on diode D4-cathode to IGND.

GUID-20220926-SS0I-K94D-KRLL-2JGCV7M1JVMR-low.png Figure 3-1 Switch-Node Secondary Side (50 V / div, 500 ns / div, no bandwidth limit (BWL))
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