Voltage-controlled current-type power tube driving circuit

• Main Authors: LI JIEMEI, XIE JIAMING, QIAN FEIYAN
• Format: Patent
• Language: Chinese; English
• Published: 13.04.2021
• Subjects: BASIC ELECTRONIC CIRCUITRY; ELECTRICITY; PULSE TECHNIQUE

The utility model discloses a voltage-controlled current type power tube driving circuit, which comprises a pre-stage amplifying circuit, a power amplifying circuit, a power supply and an RC network, wherein the power supply is used for supplying power, the pre-stage amplifying circuit is connected with PWM signals, the power amplifying circuit is connected with the pre-stage amplifying circuit, the RC network and the voltage-controlled current power tube, and the RC network is connected with the voltage-controlled current power tube. The driving circuit provided by the utility model can effectively improve the driving current and the driving power switching frequency and reduce the switching loss; through actual measurement, the peak value of the instantaneous driving current of the driving circuit reaches more than ten A, the transmission delay time of the driving circuit for turning on the rising edge and turning off the falling edge of the IGBT can be controlled within dozens of ns, the switching frequenc