SYSTEM AND APPARATUS FOR INDUCTIVE CHARGING OF A HANDHELD DEVICE
First Claim
1. A wireless charging device, comprising:
- a transmitting side resonant tank circuit that includes a transmitting side tank capacitor and a primary transmission coil, wherein the primary transmission coil is coupled to the transmitting side tank capacitor, wherein the primary transmission coil creates an alternating magnetic field that is inductively coupled to a receiver coil on a handheld device that is utilized to charge a battery in the handheld device;
a bridge component that is coupled to the transmitting side resonant tank circuit for driving the transmitting side resonant tank circuit, wherein the bridge component receives a voltage from a power supply for supplying a rail of the transmitting side resonant tank circuit;
a regulator circuitry that controls the bridge component, wherein the regulator circuitry executes logic that controls an amount of power that is delivered to the transmitting side resonant tank circuit; and
a current sensing element that informs the regulator circuitry of an amount of current drawn from the power supply.
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Accused Products
Abstract
Included are embodiments of a wireless charging device. Some embodiments include a transmitting side resonant tank circuit that includes a transmitting side tank capacitor and a primary transmission coil. Also included is a bridge component that is coupled to the transmitting side resonant tank circuit for driving the transmitting side resonant tank circuit. The bridge component may be configured to receive a voltage from a power supply for supplying a rail of the transmitting side resonant tank circuit. A regulator circuitry may also be included, which controls the bridge component. The regulator circuitry may execute logic that controls an amount of power that is delivered to the transmitting side resonant tank circuit. Similarly, a current sensing element may be included that informs the regulator circuitry of an amount of current drawn from the power supply.
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Citations
20 Claims
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1. A wireless charging device, comprising:
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a transmitting side resonant tank circuit that includes a transmitting side tank capacitor and a primary transmission coil, wherein the primary transmission coil is coupled to the transmitting side tank capacitor, wherein the primary transmission coil creates an alternating magnetic field that is inductively coupled to a receiver coil on a handheld device that is utilized to charge a battery in the handheld device; a bridge component that is coupled to the transmitting side resonant tank circuit for driving the transmitting side resonant tank circuit, wherein the bridge component receives a voltage from a power supply for supplying a rail of the transmitting side resonant tank circuit; a regulator circuitry that controls the bridge component, wherein the regulator circuitry executes logic that controls an amount of power that is delivered to the transmitting side resonant tank circuit; and a current sensing element that informs the regulator circuitry of an amount of current drawn from the power supply. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A charging system, comprising:
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a handheld device, wherein the handheld device includes a battery that stores energy; and a charging device that comprises; a transmitting side resonant tank circuit that includes a transmitting side tank capacitor and a primary transmission coil, wherein the primary transmission coil is coupled in resonance with the transmitting side tank capacitor, wherein the primary transmission coil creates an alternating magnetic field that is inductively coupled to a receiver coil on the handheld device that is utilized to charge the battery of the handheld device; a bridge component that includes a plurality of switching elements and is coupled to the transmitting side resonant tank circuit, wherein the bridge component receives a voltage from a power supply and supply a rail of the transmitting side resonant tank circuit; and a regulator circuitry that is coupled to the bridge component, wherein the regulator circuitry executes logic that causes the charging device to control the power that is transmitted to the transmitting side resonant tank circuit. - View Dependent Claims (11, 12, 13, 14, 15, 16, 17)
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18. A charging device, comprising:
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a power supply for providing a predetermined voltage; a transmitting side resonant tank circuit that includes a transmitting side tank capacitor and a primary transmission coil, wherein the primary transmission coil is coupled with the transmitting side tank capacitor, wherein the primary transmission coil receives power from the power supply to create an alternating magnetic field that is inductively coupled to a receiver coil on a handheld device that is utilized to charge a battery of the handheld device; a half bridge that includes a plurality of switching elements and is coupled to the transmitting side resonant tank circuit, wherein the half bridge receives the predetermined voltage from the power supply and supply a rail of the transmitting side resonant tank circuit; and a regulator circuitry that is coupled to the half bridge, wherein the regulator circuitry executes logic that causes the charging device to control the power that is transmitted to the transmitting side resonant tank circuit. - View Dependent Claims (19, 20)
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Specification