US 12,395,137 B2
Electronic device and power supply method for smart power amplifier
Lixin Zhang, Shenzhen (CN)
Assigned to HONOR DEVICE CO., LTD., Shenzhen (CN)
Appl. No. 18/034,837
Filed by HONOR DEVICE CO., LTD., Shenzhen (CN)
PCT Filed Dec. 27, 2022, PCT No. PCT/CN2022/142500
§ 371(c)(1), (2) Date May 1, 2023,
PCT Pub. No. WO2023/197684, PCT Pub. Date Oct. 19, 2023.
Claims priority of application No. 202210380301.6 (CN), filed on Apr. 12, 2022.
Prior Publication US 2024/0204735 A1, Jun. 20, 2024
Int. Cl. H03F 3/21 (2006.01); H02J 7/00 (2006.01); H02J 7/34 (2006.01); H02J 50/10 (2016.01); H02J 50/12 (2016.01); H02M 1/00 (2007.01); H02M 3/156 (2006.01); H02M 3/158 (2006.01); H02M 7/44 (2006.01); H02M 7/48 (2007.01); H04R 3/00 (2006.01); H04R 29/00 (2006.01)
CPC H03F 3/21 (2013.01) [H04R 3/00 (2013.01); H04R 29/001 (2013.01); H03F 2200/03 (2013.01); H04R 2201/028 (2013.01); H04R 2430/01 (2013.01)] 12 Claims
OG exemplary drawing
 
1. An electronic device, wherein the electronic device comprises: a battery, a switch circuit, a boost circuit, a smart power amplifier, an inverter circuit, a power transmit coil, a speaker, and a controller;
the battery is connected to a first end of the switch circuit, a second end of the switch circuit is connected to an input end of the smart power amplifier, a third end of the switch circuit is connected to an input end of the boost circuit, an output end of the boost circuit is connected to the input end of the smart power amplifier and the input end of the inverter circuit, and an output end of the smart power amplifier is connected to the speaker;
the boost circuit is configured to perform boost conversion on an output voltage of the battery and is further configured to perform boost conversion on the output voltage of the battery and send the output voltage after the boost conversion to the inverter circuit;
an output end of the inverter circuit is connected to the power transmit coil;
the power transmit coil is configured to convert an alternating current outputted by the inverter circuit into an alternating magnetic field; and
the controller is configured to control, in a case that the output voltage of the battery is greater than or equal to a preset voltage, the first end of the switch circuit to be in communication with the second end of the switch circuit; and control, in a case that the output voltage of the battery is less than the preset voltage, the first end of the switch circuit to be in communication with the third end of the switch circuit, wherein the preset voltage is greater than a minimum working voltage of the smart power amplifier.