Gate driving circuit

A gate driving circuit comprising a primary circuit;

• a first secondary circuit;
• and a second secondary circuit, wherein
• the primary circuit comprises a direct-current power supply, a first primary winding, a second primary winding, a first switching element configured to form a closed circuit together with the first primary winding and the direct-current power supply which are connected in series, a first unidirectional element connected to both ends of the first switching element to block a current from the direct-current power supply, a second switching element configured to form a closed circuit together with the second primary winding and the direct-current power supply which are connected in series, and a second unidirectional element connected to both ends of the second switching element to block a current from the direct-current power supply,
• the first secondary circuit comprises a first driven element having a MOS gate structure, a first secondary winding, a first inductance element, a third switching element, and a third unidirectional element so that the first driven element, the first secondary winding, the first inductance element, and the third unidirectional element form a closed circuit with a current flowing due to an induced voltage generated in the first secondary winding when a current from the direct-current power supply flows into the first primary winding, the first secondary winding being magnetically coupled to the first primary winding to form a transformer,
• the second secondary circuit comprises a second driven element having a MOS gate structure, a second secondary winding, a second inductance element, a fourth switching element, and a fourth unidirectional element so that the second driven element, the second secondary winding, the second inductance element, and the fourth unidirectional element form a closed circuit with a current flowing due to an induced voltage generated in the second secondary winding when a current from the direct-current power supply flows into the second primary winding, the second secondary winding being magnetically coupled to the second primary winding to form the transformer,
• the primary circuit generates energy from the direct-current power supply in the first and second secondary circuits through the transformer, and returns the energy obtained form the first and second secondary circuits through the transformer to the direct-current power supply,
• the first secondary circuit charges the first driven element using the energy obtained from the primary circuit through the transformer, and discharges the energy accumulated in the first driven element to generate the energy in the primary circuit through the transformer, and
• the second secondary circuit charges the second driven element using the energy obtained from the primary circuit through the transformer, and discharges the energy accumulated in the second driven element to generate the energy in the primary circuit through the transformer.