Description

How it behaves

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What do PSFB Transformers aim to solve

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  • Unidirectional
  • Optional quasi-resonant construction
      → Converter efficiency benefits from zero-voltage and/or zero-current switching

+ Multiple voltage levels from auxiliary windings

+ Sufficient leakage inductance discharges parasitic capacitances → zero voltage switching (ZVS) → minimal switching and circulating conduction losses

  • Power ranges:
          o   Phase-shift full-bridge converter → 1kW+
          o   Interleaved full-bridge converter → 10kW+

Voltage (RMS/peak) 1000V / 1050V
Current (RMS/peak) 50A / 80A
Maximum Power 30kW
Inductance ~ 2mH
Leakage Inductance ~ 15µH
Switching Frequency 30kHz - 200kHz

  • DC-DC PSFB converters
  • Battery chargers
  • Aircraft electrical systems
  • Arc welding machines
  • Server power supplies
  • High-power audio applications
  • Laptop adapters
  • LED drivers

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