DRIVING DEVICE FOR SEMICONDUCTOR SWITCHING ELEMENT AND CONTROL SYSTEM FOR POWER CONVERTER

摘要

In a driving device for changing a semiconductor switching element, having an on-off control terminal, between an on state and an off state according to a power supply voltage input thereto, a constant-current driver generates a constant current based on the power supply voltage. The constant-current driver performs one of charging and discharging of the on-off control terminal of the semiconductor switching element based on the generated constant current so as to change the semiconductor switching element from one of the on state and off state to the other thereof. A rate varying unit adjusts, based on correlation information between the power supply voltage and the constant current, a value of the constant current so as to vary a rate of changing the semiconductor switching element from one of the on state and the off state to the other thereof.

主权项

1. A driving device for changing a semiconductor switching element, having an on-off control terminal, between an on state and an off state according to a power supply voltage input thereto, the driving device comprising:
a constant-current driver configured to generate a constant current based on the power supply voltage, and to perform at least one of charging and discharging of the on-off control terminal of the semiconductor switching element using the generated constant current so as to change the semiconductor switching element from one of the on state and off state to the other thereof; and a rate varying unit configured to adjust, based on correlation information between the power supply voltage and the constant current, a value of the constant current so as to vary a rate of changing the semiconductor switching element from one of the on state and the off state to the other thereof.