Electronic devices employing adiabatic logic circuits with wireless charging

• US 10,432,197 B2
• Filed: 08/08/2016
• Issued: 10/01/2019
• Est. Priority Date: 08/08/2016
• Status: Active Grant

• Current Assignee: Qualcomm, Inc.
• Original Assignee: Qualcomm, Inc.
• Inventors: Pu, Yu, Samson, Giby
• Primary Examiner(s): Diao, M Baye
• Application Number:
  US15/230,885
• Publication Number:
  US 20180041210A1
• Time in Patent Office: 1,149 Days
• Field of Search: 320108
• CPC Class Codes: H02J 50/10 using inductive coupling
• CPC Class Codes: H03K 19/0019 by energy recovery or adiabatic operation
• CPC Class Codes: H03K 19/01707 in asynchronous circuits

Abstract

Electronic devices employing adiabatic logic circuits with wireless charging are disclosed. In one aspect, an electronic device is provided. The electronic device includes a power circuit employing an alternating current (AC) coupler circuit configured to receive a wireless AC signal and generate a wired AC signal based on the wireless AC signal. The power circuit includes a power output configured to provide an AC power signal based on the wired AC signal generated by the AC coupler circuit. The AC power signal is generated based on the wireless charging capability of the AC coupler circuit. The electronic device employs a digital logic system that includes a power rail electrically coupled to an adiabatic logic circuit. The AC power signal is provided to the power rail to provide power to the adiabatic logic circuit. Wirelessly charging the adiabatic logic circuit consumes less power than conventional non-wireless charging circuitry.

Claims

1. An electronic device, comprising:

a power circuit, comprising;

an alternating current (AC) coupler circuit configured to;

receive a wireless AC signal; and

generate a wired AC signal based on the wireless AC signal; and

a power output configured to provide an AC power signal based on the wired AC signal; and

a digital logic system, comprising;

a power input electrically coupled to the power output;

a power rail electrically coupled to the power input; and

an adiabatic logic circuit electrically coupled to the power rail.

2. The electronic device of claim 1, wherein the electronic device does not employ an AC to direct current (DC) (AC-DC) converter circuit.

3. The electronic device of claim 1, wherein the power circuit further comprises an AC modulation circuit configured to:

receive the wired AC signal; and

generate the AC power signal comprising the wired AC signal with an adjusted amplitude.

4. The electronic device of claim 3, wherein the AC modulation circuit is further configured to generate the AC power signal comprising the wired AC signal with an adjusted frequency.

5. The electronic device of claim 4, wherein the AC modulation circuit is further configured to generate the AC power signal comprising the wired AC signal with the adjusted frequency approximately matched to a frequency of logic inputs provided to the adiabatic logic circuit.

6. The electronic device of claim 1, wherein the power circuit further comprises a battery electrically coupled to the power input and the power rail.

7. The electronic device of claim 1 configured as a wearable device.

8. The electronic device of claim 7, wherein the wearable device comprises a pacemaker.

9. The electronic device of claim 7, wherein the wearable device comprises a hearing aid.

10. The electronic device of claim 1, wherein the AC coupler circuit comprises an inductive coil configured to generate the wired AC signal in response to receiving the wireless AC signal.

11. The electronic device of claim 1, wherein the AC power signal comprises a sinusoidal-shaped AC signal.

12. The electronic device of claim 1, wherein the AC power signal comprises a trapezoidal-shaped AC signal.

13. The electronic device of claim 1 integrated into an integrated circuit (IC).

14. The electronic device of claim 1 integrated into a device selected from the group consisting of:

a set top box;

an entertainment unit;

a navigation device;

a communications device;

a fixed location data unit;

a mobile location data unit;

a mobile phone;

a cellular phone;

a smart phone;

a tablet;

a phablet;

a server;

a computer;

a portable computer;

a desktop computer;

a personal digital assistant (PDA);

a monitor;

a computer monitor;

a television;

a tuner;

a radio;

a satellite radio;

a music player;

a digital music player;

a portable music player;

a digital video player;

a video player;

a digital video disc (DVD) player;

a portable digital video player; and

an automobile.