CONVERTER SYSTEM, DRIVING CIRCUIT AND METHOD FOR SEMICONDUCTOR SWITCH

摘要

The present application discloses a converter system, a driving circuit and a driving method for a semiconductor switch. The driving circuit includes a driving unit, a sampling unit and a selection unit. A plurality of turn-off driving units with different turn-off parameters is provided in the driving unit, and a turn-off driving unit having a turn-off parameter adaptive to the working state of the semiconductor switch is selected according to the working state of the semiconductor switch so as to turn off the semiconductor switch.

主权项

1. A driving circuit for a semiconductor switch, comprising:
a driving unit comprising a plurality of turn-off driving units with different turn-off parameters and a turn-on driving unit; a sampling unit configured to sample a sampling current reflecting a working state of the semiconductor switch; and a selection unit receiving a driving control signal, the sampling current and one or more reference values, determining the working state of the semiconductor switch according to the sampling current and the reference values when the driving control signal is a first control signal, and selecting a turn-off driving unit with a turn-off parameter adaptive to the working state to turn off the semiconductor switch; and selecting the turn-on driving unit to turn on the semiconductor switch when the driving control signal is a second control signal.