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UCC3817A Datasheet BiCMOS Power Factor Preregulator

Manufacturer: Texas Instruments

Overview: Product Folder Sample & Buy Technical Documents Tools & Software Support & Community UCC2817A, UCC2818A, UCC3817A, UCC3818A SLUS577D – NOVEMBER 2011 – REVISED AUGUST 2016 UCCx81xA BiCMOS Power Factor Preregulator.

Download the UCC3817A datasheet PDF. This datasheet also includes the UCC2817A variant, as both parts are published together in a single manufacturer document.

General Description

The UCC3817A and the UCC3818A family provides all the functions necessary for active power factor corrected preregulators.

The controller achieves near unity power factor by shaping the ac input line current waveform to correspond to that of the ac input line voltage.

Average current mode control maintains stable, low distortion sinusoidal line current.

Key Features

  • 1 Controls Boost Preregulator to Near-Unity Power Factor.
  • Limits Line Distortion.
  • World Wide Line Operation.
  • Overvoltage Protection.
  • Accurate Power Limiting.
  • Average Current Mode Control.
  • Improved Noise Immunity.
  • Improved Feed-Forward Line Regulation.
  • Leading Edge Modulation.
  • 150-µA Typical Start-Up Current.
  • Low-Power BiCMOS Operation.
  • 12-V to 17-V Operation.
  • Frequency Range of 6.

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