US 12,355,263 B2
Wireless power transfer
Johannes Wilhelmus Draak, Horst (NL); Klaas Jacob Lulofs, Veldhoven (NL); Pascal Leonard Maria Theodoor Lebens, Eindhoven (NL); and Andries van Wageningen, Wijlre (NL)
Assigned to Koninklijke Philips N.V., Eindhoven (NL)
Filed by KONINKLIJKE PHILIPS N.V., Eindhoven (NL)
Filed on Feb. 15, 2024, as Appl. No. 18/442,150.
Application 18/442,150 is a continuation of application No. 17/640,856, granted, now 11,936,201, previously published as PCT/EP2020/074801, filed on Sep. 4, 2020.
Claims priority of application No. 19196160 (EP), filed on Sep. 9, 2019.
Prior Publication US 2024/0186830 A1, Jun. 6, 2024
This patent is subject to a terminal disclaimer.
Int. Cl. H02J 50/12 (2016.01); H02J 50/80 (2016.01); H04B 5/79 (2024.01)
CPC H02J 50/12 (2016.02) [H02J 50/80 (2016.02); H04B 5/79 (2024.01)] 21 Claims
OG exemplary drawing
 
1. A power transmitter comprising:
a receiver circuit, wherein the receiver circuit is configured to receive at least one message from a power receiver
a transmitter coil,
wherein the transmitter coils is configured to generate a power transfer signal,
wherein the power transfer signal is generated in response to a drive signal;
a driver circuit, wherein the driver circuit is configured to generate the drive signal;
a power loop controller circuit,
wherein the power loop controller circuit is configured to control the drive signal so as to adjust a power level of the power transfer signal,
wherein the power control loop controller circuit is configured to apply changes to the power level of the power transfer signal in response to the at least one message;
a mode memory circuit,
wherein the mode memory circuit is configured to store at least one power level mode,
wherein the at least one power level mode is associated with a reference power level;
a mode circuit,
wherein the mode circuit is configured to adapt the drive signal so as to set the power level of the power transfer signal to a first reference value in response to receiving a mode request message,
wherein the first reference value corresponds to a first reference power level of a first power level mode,
wherein the first power level mode is indicated in the mode request message,
wherein the first power level mode is one of the at least one power level mode.