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

Features

  • Maximum 400-W output power at 96 VAC–134 VAC grid connection
  • Two-stage converter achieving 92.8% plug-to-plug efficiency:
    • First stage: PFC interleaved Boost (97% efficiency) with UCC28064A, allows reduced EMI filter size and increases efficiency
    • Second stage: half-bridge resonant LLC converter (95% efficiency) isolates HV input, and supplies 30 V, 13.3 A
  • No need of an auxiliary power supply, since the second stage provides the bias voltage for the PFC
  • Specifically designed to comply with DO160-G harmonic limits in avionics applications for mains frequency in the 400 Hz–800 Hz range