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AP3983E - HIGH FREQUENCY PRIMARY SIDE POWER SWITCHER

General Description

The AP3983E is high frequency power switcher for power supplies with better conversion efficiency, better voltage & current accuracy, and improved protection functions.

Key Features

  • Primary Side Control for Eliminating Opto-coupler.
  • Valley Switching Turn on for Higher Efficiency and Better EMI Performance.
  • Better Transient Characteristics.
  • Built-in N Channel MOSFET with 700 BVDSS.
  • Low Start-up Current: 0.2A (Typ. ).
  • Internal Output Cable Voltage Drop Compensation.
  • Hiccup Function to Improve Short Circuit Protection.
  • Better Over Voltage Protection.
  • Better Over Temperature Protection.
  • Low Total Cost Solution.
  • Output Powe.

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Full PDF Text Transcription (Reference)

The following content is an automatically extracted verbatim text from the original manufacturer datasheet and is provided for reference purposes only.

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A D V A N CNEEDW IPNRF ODRUMCATT I O N AP3983E HIGH FREQUENCY PRIMARY SIDE POWER SWITCHER FOR OFF-LINE SMPS Description The AP3983E is high frequency power switcher for power supplies with better conversion efficiency, better voltage & current accuracy, and improved protection functions. Typical applications include adapter for ADSL, home appliance power supply, LED lighting power supply and PC auxiliary power supplies. The AP3983E with built in MOSFET, regulates the output voltage and current in the primary side by piece-wise Pulse Frequency Modulation (p-PFM) in discontinuous conduction mode (DCM).