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UCC28070 - PFC Controller

General Description

The UCC28070 is an advanced power factor correction (PFC) device that integrates two pulsewidth modulators (PWMs) operating 180° out of phase.

Key Features

  • 1 Interleaved Average Current-Mode PWM Control With Inherent Current Matching.
  • Advanced Current Synthesizer Current Sensing for Superior Efficiency.
  • Highly-Linear Multiplier Output With Internal Quantized Voltage Feed-Forward Correction for Near-Unity PF.
  • Programmable Frequency from 30 kHz to 300 kHz.
  • Programmable Maximum Duty-Cycle Clamp.
  • Programmable Frequency-Dithering Rate and Magnitude for Enhanced EMI Reduction.
  • Magnitude: 3 kH.

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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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Product Folder Sample & Buy Technical Documents Tools & Software Support & Community Reference Design UCC28070 SLUS794F – NOVEMBER 2007 – REVISED APRIL 2016 UCC28070 Interleaving Continuous Conduction Mode PFC Controller 1 Features •1 Interleaved Average Current-Mode PWM Control With Inherent Current Matching • Advanced Current Synthesizer Current Sensing for Superior Efficiency • Highly-Linear Multiplier Output With Internal Quantized Voltage Feed-Forward Correction for Near-Unity PF • Programmable Frequency from 30 kHz to 300 kHz • Programmable Maximum Duty-Cycle Clamp • Programmable Frequency-Dithering Rate and Magnitude for Enhanced EMI Reduction – Magnitude: 3 kHz to 30 kHz – Rate: Up to 30 kHz • External-Clock Synchronization Capability • Enhanced Load and Line Transient Respo