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UCC28722 - Constant-Current Controller

General Description

The UCC28722 flyback power supply controller provides isolated-output constant-voltage (CV) and constant-current (CC) output regulation without the use of an optical coupler.

Key Features

  • 1 < 50-mW No-Load Power.
  • Primary-Side Regulation (PSR) Eliminates Opto- Coupler.
  • Dynamic BJT Drive.
  • ± 5% Voltage and Current Regulation Across Line and Load.
  • 80-kHz Maximum Switching Frequency Enables High-Power Density Charger Designs.
  • Quasi-Resonant Valley-Switching Operation for Highest Overall Efficiency.
  • Wide VDD Range Allows Small Bias Capacitor.
  • Output Overvoltage, Low-Line, and Overcurrent Protection Functions.

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Full PDF Text Transcription for UCC28722 (Reference)

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Product Folder Sample & Buy Technical Documents Tools & Software Support & Community Reference Design UCC28722 SLUSBL7B – DECEMBER 2013 – REVISED OCTOBER 2015 UCC28722 Co...

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n UCC28722 SLUSBL7B – DECEMBER 2013 – REVISED OCTOBER 2015 UCC28722 Constant-Voltage, Constant-Current Controller With Primary-Side Regulation, BJT Drive 1 Features •1 < 50-mW No-Load Power • Primary-Side Regulation (PSR) Eliminates Opto- Coupler • Dynamic BJT Drive • ± 5% Voltage and Current Regulation Across Line and Load • 80-kHz Maximum Switching Frequency Enables High-Power Density Charger Designs • Quasi-Resonant Valley-Switching Operation for Highest Overall Efficiency • Wide VDD Range Allows Small Bias Capacitor • Output Overvoltage, Low-Line, and Overcurrent Protection Functions • Programmable Cable Compensation •

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