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UCC29950 - CCM PFC and LLC Combo Controller

General Description

The UCC29950 provides all the control functionality for an AC-to-DC converter with a CCM boost Power Factor Correction (PFC) stage followed by an LLC converter stage.

The controller is optimized to allow ease of use.

Key Features

  • 1 High Efficiency PFC and Half-Bridge Resonant LLC Combo Controller.
  • Continuous Conduction Mode (CCM) Boost Power Factor Correction.
  • Supports Self-Bias or Auxiliary (external) Bias Mode of Operation.
  • PFC Loops Fully Internally Compensated.
  • PFC Stage Design in 3 Easy Steps (design voltage feedback, current feedback and power stage).
  • Fixed 100-kHz PFC Frequency with Dithering for Ease of EMI Compliance.
  • True Input Power Limit, Independ.

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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 UCC29950 SLUSC18A – SEPTEMBER 2014 – REVISED MARCH 2015 UCC29950 CCM PFC and LLC Combo Controller 1 Features •1 High Efficiency PFC and Half-Bridge Resonant LLC Combo Controller • Continuous Conduction Mode (CCM) Boost Power Factor Correction • Supports Self-Bias or Auxiliary (external) Bias Mode of Operation • PFC Loops Fully Internally Compensated • PFC Stage Design in 3 Easy Steps (design voltage feedback, current feedback and power stage) • Fixed 100-kHz PFC Frequency with Dithering for Ease of EMI Compliance • True Input Power Limit, Independent of Line Voltage • Fixed LLC Frequency Operating Range of 70 kHz to 350 kHz • Dead-Time Varied Across Load Range for LLC Half-Bridge Power Stage to Exten