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METHOD FOR OPERATING AN LLC RESONANT CONVERTER FOR A LIGHT-EMITTING MEANS, CONVERTER, AND LED CONVERTER DEVICE

  • US 20150077003A1
  • Filed: 04/15/2013
  • Published: 03/19/2015
  • Est. Priority Date: 04/13/2012
  • Status: Active Grant
First Claim
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1. A method for operating an LLC resonant converter (19;

  • 79) for a light-emitting means (3;

    5;

    50), wherein the LLC resonant converter (19;

    79) has a primary-side circuit (20;

    80), which comprises a half-bridge (21, 22) and an LLC resonant circuit (25-27), and a secondary side (13;

    30) galvanically isolated therefrom, the method comprising;

    controlling the half-bridge (21, 22) by clocked switching of switches (21, 22) of the half-bridge,detecting a load (3;

    5;

    50), to which energy is supplied from an output (35) of the secondary side (13;

    30), based on a measured variable (iavg) detected in the primary-side circuit (20;

    80), andadapting the control of the half-bridge (21, 22) on the basis of the measured variable (iavg) detected in the primary-side circuit (20;

    80).

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