Offline Controllers | MC44608

外部组件极少的可靠且灵活的 SMPS 控制器

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概览

MC44608 是一款用于离线转换器的高性能电压模式控制器。此高电压电路集成了启动电流源和振荡器电容器，仅需很少外部组件，且具有高灵活性和可靠性。该器件还具有极高能效待机管理，通过高能效脉冲模式运行实现。此技术可将待机功耗降低到大约 1W，同时可在 150W SMPS 中提供 300mW。集成的启动电流源 无损耗离线启动 直接离线运行 快速启动

  • Flexibility
  • Duty Cycle Control
  • Undervoltage Lockout with Hysteresis
  • On Chip Oscillator Switching Frequency 40, 75, or 100 kHz
  • Secondary Control with Few External Components

    Protections
  • Maximum Duty Cycle Limitation
  • Cycle by Cycle Current Limitation
  • Demagnetization (Zero Current Detection) Protection
  • "Over VCC Protection" Against Open Loop
  • Programmable Low Inertia Over Voltage Protection Against Open Loop
  • Internal Thermal Protection

    SMPS Controller
  • Pulsed Mode Techniques for a Very High Efficiency Low Power Mode
  • Lossless Startup
  • Low dV/dT for Low EMI Radiations
  • Pb-Free Packages are Available

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