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

2.4 Thermal Image

Figure 2-6 and Table 2-7 show the thermal picture of the converter supplied at 115 VAC and 400 Hz, taken after 30 minutes soak time, at 25°C ambient temperature.

The board runs at full load with a fan, placed on the side (DC/DC output).

GUID-20220530-SS0I-CGVR-HDGN-XNH2RFRQQ399-low.pngFigure 2-6 Thermal Image, 30 Minutes, Full Load
Table 2-7 Main Image Markers
Name Temperature Emissivity Background

D3

64.9°C

0.96

25.5°C

L2

42.7°C

0.96

25.5°C

L1

37.3°C

0.96

25.5°C

Q1

37.1°C

0.96

25.5°C

D1

43.8°C

0.96

25.5°C

D5

41.5°C

0.96

25.5°C

L7

35.5°C

0.96

25.5°C

T1

75.5°C

0.96

25.5°C

Q5

45.1°C

0.96

25.5°C

Q7

44.1°C

0.96

25.5°C
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