TIDT403 August   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 Considerations
    4. 1.4 Dimensions
  6. 2Testing and Results
    1. 2.1 Efficiency Graphs
    2. 2.2 Efficiency Data
    3. 2.3 Thermal Performance
    4. 2.4 Bode Plots
    5. 2.5 Light Load Efficiency Optimization
    6. 2.6 Switching Frequency Choice
  7. 3Waveforms
    1. 3.1 Switching
    2. 3.2 Output Voltage Ripple
    3. 3.3 Overcurrent Protection
    4. 3.4 Load Transients
    5. 3.5 Turn ON and OFF
  8. 4References
  9.   Trademarks

Features

  • GaN based phase-shifted full-bridge (PSFB) using LMG3522 and controlled using C29 microcontroller unit (MCU)
  • 200kHz switching frequency, magnetic size is 35% less than 100kHz
  • 95.48% at 200kHz, 400V Vin, 13.5V Vout, about 1kW
  • Dual active clamping circuits for high-frequency scenario and low synchronous rectifier (SR) MOSFET voltage stress
  • Light load efficiency optimization promotes maximum 5% efficiency
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