US 11,996,704 B2
Electronic device receiving wireless power
Beomwoo Gu, Gyeonggi-do (KR); Jaehyun Park, Gyeonggi-do (KR); Chongmin Lee, Gyeonggi-do (KR); and Bohwan Choi, Gyeonggi-do (KR)
Assigned to Samsung Electronics Co., Ltd, (KR)
Filed by Samsung Electronics Co., Ltd., Gyeonggi-do (KR)
Filed on Nov. 10, 2021, as Appl. No. 17/523,476.
Application 17/523,476 is a continuation of application No. PCT/KR2021/014795, filed on Oct. 21, 2021.
Claims priority of application No. 10-2020-0154941 (KR), filed on Nov. 18, 2020; and application No. 10-2021-0065693 (KR), filed on May 21, 2021.
Prior Publication US 2022/0158492 A1, May 19, 2022
Int. Cl. H02J 50/12 (2016.01); H01F 27/42 (2006.01)
CPC H02J 50/12 (2016.02) [H01F 27/42 (2013.01); H02J 2310/22 (2020.01)] 20 Claims
OG exemplary drawing
 
1. A wireless power receiver receiving wireless power from a wireless power transmitter, the wireless power receiver comprising:
a resonance circuit configured to receive the wireless power, and comprising a first coil, a second coil, and a first capacitor; and
a rectifier circuit connected to the resonance circuit, and comprising a first rectifier circuit and a second rectifier circuit forming a full bridge structure; and
a driver circuit,
wherein the first rectifier circuit includes a first metal oxide semiconductor field-effect transistor (MOSFET), a second MOSFET, a third MOSFET and a fourth MOSFET, a first source of the first MOSFET being connected to one end of a resonator in which the first coil and the first capacitor are connected in series, a second source of the second MOSFET being connected to another end of the resonator, and sources of the third MOSFET and the fourth MOSFET being connected to ground,
wherein the driver circuit is connected to gates of the first MOSFET, the second MOSFET, the third MOSFET, and the fourth MOSFET, and
wherein, when the driver circuit switches off the first MOSFET and the second MOSFET and switches on the third MOSFET and the fourth MOSFET, as a first current is induced in the resonator based on a first magnetic field generated from the wireless power transmitter and a second current is induced in the second coil based on a second magnetic field generated in the resonator, the resonance circuit receives the wireless power, and the second current induced in the second coil is rectified by the second rectifier circuit.