Selective power distribution during wireless charging
First Claim
1. A wireless communication device comprising:
- wireless communication circuitry configured, when enabled, to process a signal for wireless communication;
power supply circuitry configured, when enabled, to generate one or more battery supply voltages from a battery voltage;
a battery charger configured, when enabled, to charge a battery that supplies the battery voltage;
wireless power circuitry configured, when receiving a wireless power signal, to generate a wireless power (WP) supply voltage; and
a power distribution circuit configured to;
when the wireless communication circuitry and the power supply circuitry are not enabled and the wireless power circuitry is receiving the wireless power signal, and when the battery voltage is below a device enabling threshold voltage level, distribute the WP supply voltage to selected circuits within the wireless communication device to enable a wireless communication channel and control signaling with an external source of the wireless power signal to support a wireless power transfer (WPT) connection procedure with the external source that facilitates charging of the battery by the battery charger, the power distribution circuit including;
a processing circuit to detect when the wireless communication circuitry and the power supply circuitry are not enabled and when the wireless power circuitry is receiving the wireless power signal; and
a plurality of supply voltage regulating circuits, wherein one or more of the plurality of supply voltage regulating circuits are included in the selected circuits and generate one or more additional supply voltages from the WP supply voltage.
6 Assignments
0 Petitions
Accused Products
Abstract
Power distribution circuitry to improve wireless power distribution and facilitate wireless power transfer (WPT) operations in a wireless communication device under a variety of operating conditions. In various exemplary embodiments of the disclosure, the power distribution circuitry operates to provide a wireless power (WP) supply voltage to wireless communication circuitry of the device in order enable a WPT connection procedure under certain low power conditions. Such conditions might include a power off mode, a sleep mode, and dead/low battery operating conditions wherein the available battery supply voltage is less than a threshold voltage required to enable device components. The power distribution circuitry may switch the supply voltage of the wireless communication circuitry to another available supply voltage source after the WPT connection procedure is completed and wireless power is being received by the wireless communication device.
7 Citations
20 Claims
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1. A wireless communication device comprising:
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wireless communication circuitry configured, when enabled, to process a signal for wireless communication; power supply circuitry configured, when enabled, to generate one or more battery supply voltages from a battery voltage; a battery charger configured, when enabled, to charge a battery that supplies the battery voltage; wireless power circuitry configured, when receiving a wireless power signal, to generate a wireless power (WP) supply voltage; and a power distribution circuit configured to; when the wireless communication circuitry and the power supply circuitry are not enabled and the wireless power circuitry is receiving the wireless power signal, and when the battery voltage is below a device enabling threshold voltage level, distribute the WP supply voltage to selected circuits within the wireless communication device to enable a wireless communication channel and control signaling with an external source of the wireless power signal to support a wireless power transfer (WPT) connection procedure with the external source that facilitates charging of the battery by the battery charger, the power distribution circuit including; a processing circuit to detect when the wireless communication circuitry and the power supply circuitry are not enabled and when the wireless power circuitry is receiving the wireless power signal; and a plurality of supply voltage regulating circuits, wherein one or more of the plurality of supply voltage regulating circuits are included in the selected circuits and generate one or more additional supply voltages from the WP supply voltage. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. A power distribution circuit for use in a device having wireless communication circuitry, power supply circuitry, a battery charger, a battery, and wireless power (WP) circuitry, the power distribution circuit comprising:
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a processing circuit configured to; detect when the power supply circuitry is not enabled, when a battery voltage of the battery is below a device enabling threshold voltage level, and when the WP circuitry is receiving a wireless power signal, wherein the WP circuitry generates a WP supply voltage from the wireless power signal; and when each of said conditions is detected, generate a control signal for powering selected circuits of the device to enable a wireless communication channel and control signaling with an external source of the wireless power signal to support a wireless power transfer (WPT) connection procedure with the external source that facilitates charging of the battery by the battery charger; a plurality of supply voltage regulating circuits; and switching circuitry configured to provide the WP supply voltage to one or more of the plurality of supply voltage regulating circuits based on the control signal, wherein the one or more of the plurality of supply voltage regulating circuits generates one or more additional supply voltages from the WP supply voltage, and wherein the one or more additional supply voltages power the selected circuits. - View Dependent Claims (9, 10, 11, 12, 13, 14)
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15. A method for execution by a processing circuit for distributing power within a wireless communication device having a battery for battery powered operation, the method comprising:
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detecting when power supply circuitry of the wireless communication device is not enabled, when wireless power circuitry of the wireless communication device is generating a wireless power (WP) supply voltage, and when a battery voltage of the battery is below a device enabling threshold voltage level; when each of said conditions is detected, generating a control signal for powering selected circuits of the wireless communication device to enable a wireless communication channel and control signaling with an external source of wireless power to facilitate a wireless power transfer (WPT) connection procedure with the external source of wireless power that facilitates charging of the battery by a battery charger; and enabling distribution of the WP supply voltage to one or more of a plurality of supply voltage regulating circuits based on the control signal, wherein the one or more of the plurality of supply voltage regulating circuits generates one or more additional supply voltages from the WP supply voltage, and wherein the one or more additional supply voltages power the selected circuits. - View Dependent Claims (16, 17, 18, 19, 20)
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Specification