Power transistor gate driver

摘要

The present invention relates to a gate driver for a power transistor comprising a first charging path operatively connected between a first voltage supply and a gate terminal of the power transistor for charging the gate terminal to a first gate voltage. A second charging path is connectable between the gate terminal of the power transistor and a second supply voltage to charge the gate terminal from the first gate voltage to a second gate voltage larger or higher than the first gate voltage. A voltage of the second voltage supply is higher than a voltage of the first voltage supply.

主权项

1. A gate driver for a power transistor, comprising:
a first charging path electrically connectable between a first voltage supply and a gate terminal of the power transistor for charging the gate terminal to a first gate voltage; a second charging path electrically connectable between a second voltage supply and the gate terminal of the power transistor for charging the gate terminal from the first gate voltage to a second gate voltage larger than the first gate voltage; and a controllable discharge path adapted to switch the power transistor to an OFF-state/non-conducting state, wherein the controllable discharge path is connectable between the gate terminal of the power transistor and a source terminal of the power transistor, wherein a voltage of the second voltage supply is higher than a voltage of the first voltage supply.