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<topic id="topic_1c784d4b-a923-4f82-9a7d-13261f909c9e" rev="7">
  <title>Introduction</title>
  
  <body>
    <p>The <keyword keyref="btn">TEA1916</keyword> is a fully digital controller for high-efficiency resonant power
      supplies. It is a 2-chip combo, which includes the <keyword keyref="TEA19161">TEA19161</keyword> resonant/LLC
      controller and the <keyword keyref="TEA19162">TEA19162</keyword> PFC controller. Together with the <keyword keyref="TEA1995T">TEA1995T</keyword> dual SR controller, a complete resonant power supply can be built, which
      is easy to design and has a very low component count. This power supply meets the efficiency
      regulations of Energy Star, the Department of Energy (DoE), the Eco-design directive of the
      European Union, the European Code of Conduct, and other guidelines. So, an additional power
      supply for the standby supply is not required.</p>
    <p>This application note describes the <keyword keyref="TEA19161">TEA19161</keyword> and <keyword keyref="TEA19162">TEA19162</keyword> functions for different applications. It covers the functionality of the
      standard IC versions <keyword keyref="TEA19161T">TEA19161T</keyword>, <keyword keyref="TEA19162T">TEA19162T</keyword>, and the
      safe-restart versions <keyword keyref="TEA19161CT">TEA19161CT</keyword> and <keyword keyref="TEA19162CT">TEA19162CT</keyword>.
      Because the combination of two controllers provides extensive functionality, many topics are
      discussed.</p>
    <p>This document is set up in such a way that a chapter or paragraph of a specific topic can be
      read as a standalone explanation. A minimum number of cross-references to other document parts
      of the <keyword keyref="TEA19161T">TEA19161T</keyword> or <keyword keyref="TEA19162T">TEA19162T</keyword> data sheets is used.
      This document setup leads to repetition of some information within the application note and to
      descriptions or figures that are similar to the ones published in the data sheets. To enhance
      readability, only typical values are given.</p>
    <p>The <keyword keyref="TEA19161T">TEA19161T</keyword> and <keyword keyref="TEA19162T">TEA19162T</keyword> can be considered as one
      PFC + HBC system controller. In this document, the one system controller is called <keyword keyref="btn">TEA1916</keyword>. Only in specific cases, the <keyword keyref="TEA19161T">TEA19161T</keyword> and <keyword keyref="TEA19162T">TEA19162T</keyword> names are used.</p>
  </body>
</topic>