Electrical circuit for delivering power to consumer electronic devices

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 not reduced from the voltage level of the AC input power signal;
• a switch capacitor voltage breakdown circuit coupled to the rectifier circuit for receiving the rectified DC power signal from the rectifier circuit and generating a first intermediate DC power signal, the switch capacitor voltage breakdown circuit including:
• a pair of flyback capacitors;
• 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 pair of 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;
• a buck regulator circuit for receiving the rectified DC power signal from the rectifier circuit and generating a second intermediate DC power signal, the buck regulator circuit including a regulator switch assembly coupled to a voltage reduction circuit, the voltage reduction circuit including at least one diode, an inductor, and a capacitor, the regulator switch assembly being operated to selectively deliver the rectified DC power signal to the voltage reduction circuit;
• and
• a controller configured to regulate the switch capacitor voltage breakdown circuit at a different frequency than the buck regulator circuit;
• 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.

A power module for providing electrical power for use in powering electronic devices, comprising:

• at least one switch capacitor voltage breakdown circuit for receiving a power input signal from an electrical power source and generate an intermediate power signal, the at least one switch capacitor voltage breakdown circuit including:
• a pair of flyback capacitors;
• and
• a plurality of switch assemblies electrically coupled to each of the pair of flyback capacitors;
• a buck regulator circuit electrically coupled in parallel with the switch capacitor voltage breakdown circuit;
• an integrated circuit controller programmed to regulate the switch capacitor voltage breakdown circuit at a different frequency than the buck regulator circuit;
• and
• a forward converter circuit coupled to at least one switch capacitor voltage breakdown circuit, the forward converter circuit including a transformer coupled to the switch capacitor voltage breakdown circuit for receiving the intermediate power signal and delivering an output power signal to an electronic device.

A power module for providing electrical power for use in powering electronic devices, comprising:

• a switch capacitor voltage breakdown circuit for receiving a power input signal from an electrical power source and generate an output power signal, the switch capacitor voltage breakdown circuit including:
• a pair of flyback capacitors;
• and
• a plurality of switch assemblies electrically coupled to each of the pair of flyback capacitors;
• a buck regulator circuit electrically coupled in parallel with the switch capacitor voltage breakdown circuit;
• and
• an integrated circuit controller programmed to regulate the switch capacitor voltage breakdown circuit at a different frequency than the buck regulator circuit.

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 not reduced from the voltage level of the AC input power signal;
• 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;
• 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 pair of 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 buck regulator circuit for receiving the rectified DC power signal from the rectifier circuit and generating a second intermediate DC power signal;
• 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;
• and
• a controller configured to regulate the switch capacitor voltage breakdown circuit at a different frequency than the buck regulator circuit.

A method of assembling a voltage reduction apparatus, including the steps of:

• providing a semiconductor chip;
• forming a switch capacitor voltage breakdown circuit on the semiconductor chip, the switch capacitor voltage breakdown circuit configured to receive an input DC power signal having an input voltage level from a power source and discharge an output DC power signal having an output voltage level that is less than the input voltage level, the switch capacitor voltage breakdown circuit including a pair of flyback capacitors and a plurality of switch assemblies electrically coupled to each of the pair of flyback capacitors, at least one of the switch assemblies including a MOSFET switch, at least one level shifter coupled to the MOSFET switch for receiving a CMOS logic signal and delivering a control signal to the MOSFET switch as a function of the CMOS logic signal, and a dickson charge pump coupled to the level shifter, the dickson charge pump configured to receive the rectified DC power signal and generate an output power signal having a voltage level that is greater than the voltage level of the rectified DC power signal, the output power signal being delivered to the level shifter for use in operating MOSFET switch
• forming a buck regulator circuit on the semiconductor chip, the buck regulator circuit electrically coupled in parallel with the switch capacitor voltage breakdown circuit;
• and
• forming an integrated circuit controller on the semiconductor chip, the integrated circuit controller programmed to sense the voltage level of input DC power signal and adjust the gain of the switch capacitor voltage breakdown circuit as a function of the sensed voltage level to generate the output DC power signal, and to regulate the switch capacitor voltage breakdown circuit at a different frequency than the buck regulator circuit.