A switch mode DC-AC converter driven oscillation system which always works on square wave driving, soft-switching and resonant conditions supported by the following techniques is disclosed. {circle around (1)} the techniques composed of totally analog circuitry to dynamically detect the innate resonant frequency of the system through comparison between the phases of the gate driving and zero voltage or current crossing signals of the main oscillation of the system and to drive the system with the detected innate resonant frequency to realize resonant operation and soft-switching. Based on different types of PLL technologies, two of such techniques are disclosed. {circle around (2)} the technique to realize a Voltage Controlled Soft-switching Capacitor (VCSC) to compensate the innate resonant frequency or to adjust the output voltage or power of the system through its tuning/detuning effect. The disclosed techniques can be combined to realize square wave driving, soft-switching and resonant systems which operate in either variable or fixed frequency conditions.

A switch mode DC-AC converter driven oscillation system which always works on square wave driving, soft-switching and resonant conditions supported by the following techniques is disclosed. {circle around (1)} the techniques composed of totally analog circuitry to dynamically detect the innate resonant frequency of the system through comparison between the phases of the gate driving and zero voltage or current crossing signals of the main oscillation of the system and to drive the system with the detected innate resonant frequency to realize resonant operation and soft-switching. Based on different types of PLL technologies, two of such techniques are disclosed. {circle around (2)} the technique to realize a Voltage Controlled Soft-switching Capacitor (VCSC) to compensate the innate resonant frequency or to adjust the output voltage or power of the system through its tuning/detuning effect. The disclosed techniques can be combined to realize square wave driving, soft-switching and resonant systems which operate in either variable or fixed frequency conditions.

An electronic atomization device includes: a heating element for atomizing an aerosol-forming material: an electromagnetic heating circuit with an inverse class-E characteristic; a power supply circuit connected to the electromagnetic heating circuit so as to supply power to the electromagnetic heating circuit; and a drive circuit connected to the electromagnetic heating circuit so as to generate a drive signal. The electromagnetic heating circuit controls, based on a change of the drive signal, the heating element to atomize the aerosol-forming material.

An electronic atomization device includes: a heating element for atomizing an aerosol-forming material: an electromagnetic heating circuit with an inverse class-E characteristic; a power supply circuit connected to the electromagnetic heating circuit so as to supply power to the electromagnetic heating circuit; and a drive circuit connected to the electromagnetic heating circuit so as to generate a drive signal. The electromagnetic heating circuit controls, based on a change of the drive signal, the heating element to atomize the aerosol-forming material.