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CURRENT FEEDBACK FOR IMPROVING PERFORMANCE AND CONSISTENCY OF LED FIXTURES

  • US 20160029455A1
  • Filed: 03/05/2014
  • Published: 01/28/2016
  • Est. Priority Date: 03/14/2013
  • Status: Active Grant
First Claim
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1. A lighting system comprising:

  • power converter connected to mains voltage and configured to provide a driving current responsive to a control signal;

    a voltage measurement circuit configured to provide a voltage sense signal indicative of an amplitude of the mains voltage;

    a light-emitting diode (LED) module comprising a plurality of strings of LEDs that emit light responsive to the driving current, and configured to detect respective LED currents through each of the strings and output a current feedback signal indicative of the detected respective LED currents; and

    a driver controller configured to output the control signal responsive to the voltage sense signal and the current feedback signal, wherein the power converter is configured to output respective driving currents to the strings responsive to the voltage sense signal and the current feedback signal indicative of the detected respective LED currents.

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