eGaN HEMT bridge arm crosstalk suppression driving circuit and control method thereof

• Main Authors: PENG ZIHE, ZHANG YING, QIN HAIHONG, XU HUAJUAN, XIU QIANG
• Format: Patent
• Language: Chinese; English
• Published: 12.10.2018
• Subjects: APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC,OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWERSUPPLY SYSTEMS; CONTROL OR REGULATION THEREOF; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUTPOWER; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER; ELECTRICITY; GENERATION

The invention discloses an eGaN HEMT bridge arm crosstalk suppression driving circuit and a control method thereof. The circuit comprises a first driving circuit connected between a first power supplyand an upper tube of an upper bridge arm, and a second driving circuit connected between a second power supply and a lower tube of a lower bridge arm, the first driving circuit and the second drivingcircuit have the same structure, and each comprises a grid voltage totem pole structure circuit and a low impedance bridge arm crosstalk suppression circuit, wherein the input terminals of the grid voltage totem pole structure circuits are connected to the first power supply or the second power supply, and the output terminals are connected to the grid of the upper tube or the grid of the lower tube; the input terminals of the low impedance bridge crosstalk suppression circuits are connected to the first power supply or the second power supply, and the output terminals are connected to the grid and the source of the u