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系統原理圖

  • PFC
  • LLc & PSFB
  • Flyback
  • Synchronous Rectification
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      • 優秀的EAS及抗浪涌能力
      • 更低的Qg和更低的動態特性Coss
      • 帶有體快恢復二極管,具有更低的反向恢復時間
      電壓范圍:550V~650V
      產品類別:GMOS
      推薦系列
      • X F&X “E”F中小功率,有性價比,優秀的動態特性
      • X ”S”Z F & X ”Z” F 2000W+級產品或無橋應用PFC應用,低Qrr及優秀的開關性能
      工作原理
    • 方案特點

      The common working modes of PFC(Power-Factor Correction) topology include CCM(Continuous Current Mode), DCM(Discontinuous Current Mode) and CRM(Critical Conduction Mode). PFC topology has a high requirement for MOSFET, and system stability should be improved as much as possible under the condition of ensuring system efficiency and temperature rise. The control loop speed of PFC topology is relatively slow. In order to smooth the AC rectified ripple between 100Hz and 120Hz, the reaction time of PFC topology must reach 10ms. Without special optimization of the control circuit and IC, PFC topology tends to produce a large shock current during the start-up process, which can reach 5-10 times of the normal operation. Especially in the repeated switching process, the MOSFET has a more severe test. MOSFET in PFC topology are bonded between high voltage and ground. The EAS capability of MOSFET is also an important reference to evaluate their reliability during safety testing. Therefore, when choosing MOSFET for PFC circuits, the switching characteristics (Ciss), EAS capability, surge resistance and electrostatic protection capability of MOSFET should be considered in particular.

      產品列表
      • 更好的動態特性Coss
      • 均帶有體快恢復二極管,具有更低的反向恢復時間
      電壓范圍:550V~650V
      產品類別:GMOS
      推薦系列
      • X F&X “E”F中小功率,有性價比,優秀的動態特性
      • X ”S”Z F & X ”Z” F 2000W+級產品或無橋應用PFC應用,低Qrr及優秀的開關性能
      推薦系列
      • X F&X “E”F中小功率,有性價比,優秀的動態特性
      • X ”S”Z F & X ”Z” F 2000W+級產品或無橋應用PFC應用,低Qrr及優秀的開關性能
      推薦系列
      • X F&X “E”F中小功率,有性價比,優秀的動態特性
      • X ”S”Z F & X ”Z” F 2000W+級產品或無橋應用PFC應用,低Qrr及優秀的開關性能
      推薦系列
      • X F&X “E”F中小功率,有性價比,優秀的動態特性
      • X ”S”Z F & X ”Z” F 2000W+級產品或無橋應用PFC應用,低Qrr及優秀的開關性能

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