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Dimmable universal voltage LED power supply with regenerating power source circuitry and non-isolated load

  • US 9,474,113 B2
  • Filed: 05/16/2014
  • Issued: 10/18/2016
  • Est. Priority Date: 05/16/2014
  • Status: Active Grant
First Claim
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1. An electronic circuit for providing a direct current (DC) power signal, comprising:

  • a controller;

    a first transistor including a control terminal of the first transistor connected to a first terminal of the controller;

    an inductor including a first terminal of the inductor connected to a first conduction terminal of the first transistor; and

    a first capacitor including a first terminal of the first capacitor connected to the first terminal of the inductor;

    a first diode including an anode of the first diode connected to a second terminal of the first capacitor and a cathode of the first diode connected to a second terminal of the controller, wherein the second terminal of the controller is connected to the first terminal of the inductor through the first capacitor and first diode; and

    a second transistor connected between a second terminal of the inductor and the second terminal of the controller, wherein the second terminal of the inductor is connected to the second terminal of the controller through conduction terminals of the second transistor in parallel with the inductor.

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