Datasheet Linear Technology LTC3806

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Design Notes

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  Flyback Controller Improves Cross Regulation for Multiple Output Applications &mdash DN344
  PDF, 76 Kb, File published: Sep 1, 2004
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  Flyback Controller Improves Cross Regulation for Multiple
  Output Applications – Design Note 344
  Tom Hack
  Also, outputs remain uncoupled when the rectifiers
  are off, which contributes to poor cross regulation. Introduction
  Flyback converters are often used in power supplies
  requiring low to medium output power at several output
  voltages. With a flyback, multiple outputs incur little additional cost or complexity—each additional output requires
  only another transformer winding, rectifier and output
  п¬Ѓlter capacitor. Power over Ethernet (PoE) applications
  may require several low to medium power outputs
  and are good candidates for multiple output flyback
  converters. The LTC ®3806 is a new flyback controller that improves
  load and cross regulation for multiple output flyback
  converters. Multi-output systems that previously used
  post regulators, multiple switching supplies or other
  methods to provide tight output voltage tolerances can
  now use lower cost flyback converters. The LTC3806
  uses forced continuous conduction operation improving
  cross regulation by keeping the rectifiers on and the
  outputs coupled (via transformer action) for a larger
  fraction of each power conversion cycle. The LTC3806
  also uses synchronous rectiп¬Ѓcation to reduce rectiп¬Ѓer …

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Manufacturer's Classification

• Power Management > Switching Regulator > Flyback, Forward and Isolated Controllers