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Xiaomi applies for a wireless charging chip patent to improve wireless charging efficiency and shorten wireless charging time

Article Source：Kinri Energy | Author：Kinri Energy | Issuing Time：2024.05.16
On May 7, 2024, the financial sector reported that, according to the announcement of the China National Intellectual Property Administration, Beijing Xiaomi Mobile Software Co., Ltd. applied for a patent entitled "wireless charging chip and electronic equipment", with the publication number of CN117996976A and the application date of October 2022.



The patent abstract shows that this disclosure relates to the field of wireless charging technology, specifically providing a wireless charging chip and electronic device. A wireless charging chip comprising a power input terminal, a first step-down circuit, a second step-down circuit, and a switching control circuit. The power input terminal is used to connect the wireless charging coil of an electronic device. The input terminals of the first step-down circuit and the second step-down circuit are both connected to the power input terminal. The first step-down circuit includes a step-down change circuit, the second step-down circuit includes a step-down charge pump circuit, and one end of the switching control circuit is connected to the output terminal of the first step-down circuit and the second step-down circuit, while the other end is connected to the battery of the electronic device. In this disclosed embodiment, the Buck buck circuit and buck charge pump circuit are integrated into a wireless charging circuit to improve wireless charging efficiency, shorten wireless charging time, simplify wireless charging circuit structure, and reduce the occupied area of wireless charging circuit on PCB board.
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