A Chip-Based Resonant Circuit

Abstract

The invention discloses a resonant circuit based on a chip, which relates to the technical field of resonant tuning, including: a square wave generating module, a resonant module, a voltage and current sampling module, a phase difference detection module, a main control module, a driving module, a phase control module, an output Processing module; the square wave generation module is used to generate square wave signals, the resonance module is used to generate voltage division signals, the voltage and current sampling module is used to sample voltage and current signals, and the phase difference detection module is used to detect voltage and current phase differences, the main control The module is used for receiving and processing signals and outputting driving signals, the driving module is used for outputting driving signals, and the phase control module is used for controlling phase shifting. The chip-based resonant circuit of the present invention uses a microcontroller to realize phase-shift control of the inductor current through the control of the fully-controlled device, thereby performing dynamic real-time tuning control on the resonant circuit, and also uses Hall current sensors, operational amplifiers and logic The chip improves the detection accuracy of voltage and current phase difference.

Description

technical field [0001] The invention relates to the technical field of resonance tuning, in particular to a chip-based resonance circuit. Background technique [0002] For a passive one-port network including capacitance, inductance, and resistance elements, its ports may exhibit capacitive, inductive, and resistive properties. When the voltage U and current I at the circuit port appear in the same phase and the circuit is resistive, it is called Resonance phenomenon, such a circuit is called a resonant circuit. In the field of wireless transmission supply, the traditional resonant circuit is controlled by simple LLC resonant converter for frequency modulation. When the electric energy output by the resonant circuit is transmitted wirelessly and the distance changes, The resonant frequency will drift, so that the system cannot be maintained in the resonant state, resulting in a decrease in the transmission performance of the system, and it cannot be intelligently tuned accor...

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Problems solved by technology

[0002] For a passive one-port network including capacitance, inductance, and resistance elements, its ports may exhibit capacitive, inductive, and resistive properties. When the voltage U and current I at the circuit port appear in the same phase and the circuit is resistive, it is called Resonance phenomenon, such a circuit is called a resonant circuit. In the field of wireless transmission supply, the traditional resonant circuit is controlled by simple LLC resonant converter for frequency modulation. When the electric energy output by the resonant circuit is transmitted wirelessly and the distance changes, The resonant frequency will drift, so that the system cannot be maintained in the resonant state, resulting in a decrease in the transmission performance of the system, and it cannot be intelligently tuned according to the chip, resulting in a phase difference between the voltage and current at the output end of the resonant network, thereby improving the resonant soft switching topology. loss, soft switching stress increases

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