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ELECTRICAL CIRCUIT FOR DELIVERING POWER TO CONSUMER ELECTRONIC DEVICES

  • US 20150222192A1
  • Filed: 04/08/2015
  • Published: 08/06/2015
  • Est. Priority Date: 10/28/2013
  • Status: Active Grant
First Claim
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1. An electrical circuit for providing electrical power for use in powering electronic devices, comprising:

  • a primary power circuit adapted to be electrically coupled to an electrical power source, the primary power circuit configured to receive an alternating current (AC) input power signal from the electrical power source and generate an intermediate direct current (DC) power signal, the intermediate DC power signal being generated at a first voltage level that is less than a voltage level of the AC input power signal, the primary power circuit including;

    a rectifier circuit configured to receive the AC power input signal from the electrical power source and generate a rectified DC power signal, the rectified DC power signal having a voltage level that is approximately equal to the voltage level of the AC input power signal; and

    a switch capacitor voltage breakdown circuit coupled to the rectifier circuit for receiving the rectified DC power signal from the rectifier circuit and generating the intermediate DC power signal, the switch capacitor voltage breakdown circuit including;

    a pair of flyback capacitors electrically coupled in parallel;

    a plurality of switch assemblies electrically coupled to each of the pair of flyback capacitors, the plurality of switch assemblies being operated between a charge phase and a discharge phase; and

    a hold capacitor electrically coupled to each of the flyback capacitors, the plurality of switch assemblies being operated to selectively deliver the rectified DC power signal to each of the flyback capacitors during the charge phase and to selectively deliver the intermediate DC power signal to the hold capacitor during the discharge phase; and

    a secondary power circuit electrically coupled to the primary power circuit, the secondary power circuit configured to receive the intermediate DC power signal from the primary power circuit and deliver an output DC power signal to an electronic device, the output DC power signal being delivered at an output voltage level that is less than the first voltage level of the intermediate DC power signal.

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