POWER DEVICE FOR DELIVERING POWER TO ELECTRONIC DEVICES AND METHODS OF ASSEMBLING SAME
First Claim
1. An apparatus for delivering power to electronic devices, comprising:
- a semiconductor chip;
a power delivery circuit including;
a switched capacitor device adapted to be coupled to a power source, the switched capacitor device including a input switch for receiving an input power signal from the power source, a capacitor coupled to the input switch, and a pair of output switches including a first output switch coupled to a top plate of the capacitor and a second output switch coupled to a bottom plate of the capacitor and to ground, the input switches and the pair of output switches being formed on the semiconductor chip;
a buck converter coupled to the switched capacitor device; and
a transformer coupled to the buck converter for receiving a modified power signal from the buck converter and delivering an output power signal to an electrical device; and
a controller coupled to the switched capacitor device and configured to regulate the switched capacitor device as a function of a voltage level of the output power signal.
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Accused Products
Abstract
An energy efficient apparatus includes a switching device, a frequency dependent reactive device, and a control element is provided. The switching device is coupled to a source of electrical power and includes a pair of transistors and is adapted to receive a control signal and to produce an alternating current power signal. The frequency of the alternating current power signal is responsive to the control signal. The frequency dependent reactive device is electrically coupled to the pair of transistors for receiving the alternating current power signal and producing an output power signal. The frequency dependent reactive device is chosen to achieve a desired voltage of the output power signal relative to the frequency of the alternating current power signal. The control element senses an actual voltage of the direct current power signal and modifies the control signal delivered to achieve the desired voltage of the direct current power signal.
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Citations
20 Claims
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1. An apparatus for delivering power to electronic devices, comprising:
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a semiconductor chip; a power delivery circuit including; a switched capacitor device adapted to be coupled to a power source, the switched capacitor device including a input switch for receiving an input power signal from the power source, a capacitor coupled to the input switch, and a pair of output switches including a first output switch coupled to a top plate of the capacitor and a second output switch coupled to a bottom plate of the capacitor and to ground, the input switches and the pair of output switches being formed on the semiconductor chip; a buck converter coupled to the switched capacitor device; and a transformer coupled to the buck converter for receiving a modified power signal from the buck converter and delivering an output power signal to an electrical device; and a controller coupled to the switched capacitor device and configured to regulate the switched capacitor device as a function of a voltage level of the output power signal. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. An electrical circuit for providing electrical power for use in powering electronic devices, comprising:
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a power delivery circuit including; a switched capacitor device adapted to be coupled to a power source, the switched capacitor device including an input switch for receiving an input power signal from the power source, a capacitor coupled to the input switch, and a pair of output switches including a first output switch coupled to a top plate of the capacitor and a second output switch coupled to a bottom plate of the capacitor and to ground; a buck converter coupled to the switched capacitor device; and a transformer coupled to the buck converter for receiving a modified power signal from the buck converter and delivering an output power signal to an electrical device; and a controller coupled to the switched capacitor device and configured to regulate the switched capacitor device as a function of a voltage level of the output power signal. - View Dependent Claims (12, 13, 14, 15, 16, 17, 18, 19)
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20. A method of assembling an electrical circuit, comprising the steps of:
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forming a buck converter on a semiconductor chip; coupling a switched capacitor device to the buck converter, the switched capacitor device including a input switch for receiving an input power signal from a power source, a capacitor coupled to the input switch, and a pair of output switches including a first output switch coupled to a top plate of the capacitor and a second output switch coupled to a bottom plate of the capacitor and to ground, the input switches and the pair of output switches being formed on the semiconductor chip; coupling a transformer to the buck converter for receiving a modified power signal from the buck converter and delivering an output power signal to an electrical device; and coupling a controller to the switched capacitor device, the controller configured to regulate the switched capacitor device as a function of a voltage level of the output power signal.
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Specification