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US 11,146,108 B2Granted
Demodulation apparatus and method for wireless power transmitter
AssigneeNuVolta Technologies (Hefei) Co., Ltd.
InventorsSichao Liu, Junxiao Chen, Gang Dai
Life of this patent
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Abstract
A device comprises a first current sense apparatus coupled to a first switching element of a power conversion apparatus, a second current sense apparatus coupled to a second switching element of the power conversion apparatus and a current sense processing apparatus configured to receive detected current signals from the first current sense apparatus and the second current sense apparatus, and generate an average current signal and a peak current signal.
Claims20
A device comprising:
- a first current sense apparatus coupled to a first switching element of a power conversion apparatus, wherein the power conversion apparatus is a full-bridge power converter, and wherein the first current sense apparatus is a first sense transistor connected in parallel with a first switch of the full-bridge power converter;
- a second current sense apparatus coupled to a second switching element of the power conversion apparatus, wherein the second current sense apparatus is a second sense transistor connected in parallel with a second switch of the full-bridge power converter;
- and
- a current sense processing apparatus configured to receive detected current signals from the first current sense apparatus and the second current sense apparatus, and generate an average current signal and a peak current signal.
1 more element
A method comprising:
- detecting a current flowing through a transmitter of a wireless power transfer system through a first current sense apparatus coupled to a first switching element of the transmitter and a second current sense apparatus coupled to a second switching element of the transmitter;
- generating, by a current sense processing apparatus, a peak current signal, an average current signal and a peak voltage of the transmitter based upon detected current signals;
- and
- feeding the peak current signal, the average current signal and the peak voltage of the transmitter into a signal selector through a demodulation apparatus.
1 more element
A system comprising:
- a bridge converter having inputs coupled to a power source and outputs connected to an inductor-capacitor tank;
- a current sense apparatus configured to detect a current flowing through the inductor-capacitor tank;
- a current sense processing apparatus configured to generate a peak current, an average current and a peak voltage of the inductor-capacitor tank based upon detected current signals from the current sense apparatus;
- and
- a demodulation apparatus converting the peak current, the average current and the peak voltage of the inductor-capacitor tank into digital signals.
2 more elements
Dependencies are inferred from the claim text.