TIDT292 June   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 Dimensions
    4. 1.4 Test Setup
  5. 2Testing and Results
    1. 2.1 Efficiency Graphs
    2. 2.2 Efficiency Data
    3. 2.3 Power Factor and iTHD Versus Load, VAC and Frequency
      1. 2.3.1 Power Factor and iTHD Tables
    4. 2.4 Thermal Image
    5. 2.5 Bode Plots
    6. 2.6 Input AC Current Measurements: Compliance to DO160 Harmonic Limits
  6. 3Waveforms
    1. 3.1 Switching
    2. 3.2 Output Voltage Ripple
    3. 3.3 AC Waveforms (Input Voltage and Current, PFC Output Voltage)
    4. 3.4 Load Transients
    5. 3.5 Inrush Current
    6. 3.6 Start-Up Sequence
    7. 3.7 Shutdown

Load Transients

VOUT and VPFC output voltages, during load transients, were measured by supplying the converter at 96 VAC and 115 VAC, with FMAINS = 400 Hz. The load was switched between 5 A and 13 A. For all waveforms in Figure 3-12 and Figure 3-13, the bandwidth limit of the oscilloscope was set to 20 MHz.

GUID-20220527-SS0I-S7VP-VC4N-WZ2VCLS9VWWH-low.pngFigure 3-12 VIN = 96 VAC (C2: VPFC, C3: IOUT, C4: VOUT)
GUID-20220527-SS0I-4HZ5-8RJN-GK5NLJRTXDW3-low.pngFigure 3-13 VIN = 115 VAC (C2: VPFC, C3: IOUT, C4: VOUT)