TIDT378 February   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 Testing Conditions
    4. 1.4 Considerations
    5. 1.5 Dimensions
  6. 2Testing and Results
    1. 2.1 Efficiency
      1. 2.1.1 400Hz Mains Frequency
        1. 2.1.1.1 Efficiency Graph
        2. 2.1.1.2 Efficiency, Power Factor, and Input Current Harmonic Distortion (iTHD) Data
          1. 2.1.1.2.1 115VAC Input Voltage
          2. 2.1.1.2.2 90VAC Input Voltage
          3. 2.1.1.2.3 130VAC Input Voltage
      2. 2.1.2 800Hz Mains Frequency
        1. 2.1.2.1 Efficiency Graph
        2. 2.1.2.2 Efficiency, Power Factor, and Input Current Harmonic Distortion Data
          1. 2.1.2.2.1 115VAC Input Voltage
          2. 2.1.2.2.2 90VAC Input Voltage
          3. 2.1.2.2.3 130VAC Input Voltage
    2. 2.2 Thermal Images
    3. 2.3 Power Factor
      1. 2.3.1 400Hz Mains Frequency
      2. 2.3.2 800Hz Mains Frequency
    4. 2.4 Total Harmonic Distortion (iTHD)
      1. 2.4.1 400Hz Mains Frequency
      2. 2.4.2 800Hz Mains Frequency
    5. 2.5 Static Output Voltage Variation versus Load
      1. 2.5.1 400Hz Mains Frequency
      2. 2.5.2 800Hz Mains Frequency
  7. 3Waveforms
    1. 3.1 Switching Waveform on the Main FET at Full Load
    2. 3.2 AC Waveforms (Input Voltage and Current)
      1. 3.2.1 400Hz Mains Frequency
        1. 3.2.1.1 90VAC Input Voltage
        2. 3.2.1.2 115VAC Input Voltage
        3. 3.2.1.3 134VAC Input Voltage
      2. 3.2.2 800Hz Mains Frequency
        1. 3.2.2.1 90VAC Input Voltage
        2. 3.2.2.2 115VAC Input Voltage
        3. 3.2.2.3 134VAC Input Voltage
    3. 3.3 Output Voltage Ripple
    4. 3.4 Load Transients
      1. 3.4.1 100mA to 280mA
      2. 3.4.2 280mA to 100mA
    5. 3.5 Inrush Current and Start-Up
      1. 3.5.1 Full Load
      2. 3.5.2 Zero Load
    6. 3.6 Input AC Current Measurements: Compliance to DO160 Harmonic Limits
      1. 3.6.1 400Hz Mains Frequency
      2. 3.6.2 600Hz Mains Frequency
      3. 3.6.3 800Hz Mains Frequency

1.3 Testing Conditions

WARNING: High Voltage: Power supply is not isolated from AC input. Failure to follow warnings and instructions can result in personal injury, property damage, or death due to electrical shock and burn hazards.
  1. Connect the source VS1 to TP2 and TP4
  2. Connect the load to connector J2, with positive to pin 1
  3. Connect the source VS2 to J1, with positive to pin 1
  4. Attach a current probe in series to VS1 to measure the input current
  5. Turn on VS1 (accepted range: 90VAC to 130VAC) and VS2 without any sequence restriction
  6. Increase the load current on the output
  7. After turn off, discharge the capacitors C1 and C2 by means of an external resistor (see High Voltage Warning) or active discharge circuit.