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LED lighting system driven at high voltage DC

  • US 9,795,011 B2
  • Filed: 03/03/2014
  • Issued: 10/17/2017
  • Est. Priority Date: 03/03/2013
  • Status: Active Grant
First Claim
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1. A light emitting diode (LED) lighting system, comprising:

  • a single AC/DC power supply, having an AC input terminal configured for being coupled to an AC electrical main and a DC output terminal, the AC/DC power supply configured to convert AC input power into DC output power at a first DC voltage (V1), wherein the first DC voltage (V1) is higher than the root mean square value of either a line voltage or phase voltage in the AC electrical main;

    the DC output terminal is connected to an input of each of a plurality of DC/DC converters, each of the DC/DC converters including an output connected to a respective LED driving circuit and adapted to convert electrical power at the first DC voltage (V1) into electrical power at a second DC voltage (V2) for the respective LED driving circuit, wherein each of the respective LED driving circuits is coupled to at least one LED assembly;

    wherein each of said at least one LED assembly is powered by the respective second DC voltage (V2); and

    a control module configured to control at least one of the LED driving circuits using wired or wireless data transmission techniques.

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