Nuvolta Technologies (hefei) Co., Ltd.

Nuvolta Technologies (shanghai) Co., Ltd.

Ikgyoo Song

Zhijun Luo

Xiaoming Xia

An apparatus for wireless power reception includes a receiver coil and a rectifier having a first input and a second input, the first input coupled to a first terminal of a receiver coil, the second input coupled to a second terminal of the receiver coil through a resonant capacitor. The apparatus further includes a first capacitor and a first switch network connected in series between the first input and ground and a second capacitor and a second switch network connected in series between the second input and ground, each of the first switch network and the second switch network including at least a plurality of field-effect transistors (FETs) connected in parallel, wherein the first switch network and the second switch network configured to adjust an impedance coupled to the receiver coil, the impedance associated with an Amplitude Shift Keying (ASK) modulation used by the apparatus.

Structures for in-band communications in wireless charging

A method includes providing a current flowing through a first flying capacitor of a switched-capacitor power converter, measuring a first voltage at one terminal of the first flying capacitor at a first voltage measurement time instant, measuring a second voltage at the one terminal of the first flying capacitor at a second voltage measurement time instant, and calculating a capacitance value of the first flying capacitor based on the first voltage, the second voltage, the first voltage measurement time instant and the second voltage measurement time instant.

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Suwon-si, South Korea

Ikgyoo Song