Abstract: This invention discloses a resonant circuit converter and control method, including a resonant circuit, a main loop energy detection circuit and a dual port PWM control circuit. The main loop energy detection circuit includes a main loop current sensing rectification circuit, a current comparator and a current slop compensation circuit. Dual port PWM control circuit includes: voltage comparator, OSC oscillator and PWM phase split control. The invention adopts PWM control mode to control the output voltage Vo under the condition that the resonant circuit electronic switch ZVS is. The on-time control characteristic, line regulation rate and load regulation rate of the main loop current of the resonant circuit are equivalent to the output characteristic of the current mode PWM control circuit in the state of the hard switching circuit.

Abstract: This invention relates to a driving circuit with electronic switches in serial connection structure, and this driving circuit includes: electronic switch module and active drive module, electronic switch module includes: n pcs electronic switches in serial connection, and n pcs electronic switches D and S terminal connected in series in turn; active drive modules includes: n pcs active drive circuits; and in this invention, the power supply and the driving pulse signal of the electronic switch K2 to Kn are obtained successively from electronic switch K1, and the electronic switch K1 to Kn is on and off in turn; The n pcs electronic switches have nanosecond level of the switching performance of the active circuit, which are suitable for the high frequency high power gate drive circuit when n pcs electronic switches series structure is used.

Abstract: This invention relates to a driving circuit with electronic switches in serial connection structure, and this driving circuit includes: electronic switch module and active drive module, electronic switch module includes: n pcs electronic switches in serial connection, and n pcs electronic switches D and S terminal connected in series in turn; active drive modules includes: n pcs active drive circuits. In this invention, the power supply and the driving pulse signal of the electronic switch K2 to Kn are obtained successively from electronic switch K1, and the electronic switch K1 to Kn is on and off in turn; The n pcs electronic switches have nanosecond level of the switching performance of the active circuit, which are suitable for the high frequency high power gate drive circuit when n pcs electronic switches series structure is used.

Abstract: This invention relates to a LLC resonant converter for full input voltage range and its control method. The full voltage range LLC resonant converter comprises a LLC resonant converter circuit, a current type main loop current sampler, a rectifier, a main loop energy quantifier, an energy comparator, a return-to-zero pulse generator, an oscillator, and a split phase controller. The LLC resonant converter is configured to turn on electronic switches with ZVS state in full input voltage range. This invention realizes the full voltage working range of LLC resonant converter, guarantees its reliability, and enables designing a LLC converter to be a solid state converter. The LLC resonant converter can be widely used in applications such as non-contact charging stations for electric vehicle, electromagnetic inductance heating and switch power.

Abstract: This invention relates to a kind of LLC resonant converter for full input voltage range and its control method, and belongs to LLC resonant power conversion field. The technical solution: the current type main tank current sampler test the main tank current signal of the LLC resonant conversion circuit, and its output signal passes a rectifier then to be sent into the main tank energy quantifier connected to it. In the bus voltage range from 5% Vmax to Vmax, the main tank energy quantifier can count the remained LLC resonant main tank energy corresponding to measuring the bus transient voltage, and output a stable energy wave Vo, and if the remained LLC resonant energy falls down to a given energy value, the energy comparator output control signal and the controller controls the electronic switch device turning off, and the corresponding electronic switch gains a ZVS in the next half working period of LLC resonant converter.