TIDT435 February   2025

 

  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 Images
    4. 2.4 Bode Plots
    5. 2.5 Light Load Efficiency Optimization
    6. 2.6 Midpoint Voltage Balance Control of Input Capacitors
  7. 3Waveforms
    1. 3.1 Switching
    2. 3.2 Output Voltage Ripple
    3. 3.3 Turn ON and OFF
    4. 3.4 Load Transients
  8.   Trademarks

Features

  • 650V GaN based stacked half-bridge (SHB) using LMG3522 in 800V battery system
  • 200kHz switching frequency, magnetic size is 35% less than 100kHz
  • 95.48% at 200kHz, 800V 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