Method and apparatus for controlling an IGBT device

A method of controlling an insulated gate bipolar transistor, IGBT, device, the method comprising receiving a first IGBT control signal indicating a required operating state of the IGBT device and receiving at least one further IGBT control signal;

• wherein the method further comprises, upon the first IGBT control signal indicating a required change in operating state of the IGBT device:
• controlling an IGBT driver module for the IGBT device to change an operating state of the IGBT device by applying a first logical state modulation at an input of an IGBT coupling channel;
• and
• applying at least one further modulation to the logical state at the input of the IGBT coupling channel in accordance with the at least one further IGBT control signal within a time period from the first logical state modulation, the time period being less than a state change reaction period Δt for the at least one IGBT device.

An insulated gate bipolar transistor, IGBT, driver module comprising at least one decoder;

• the at least one decoder comprising an input arranged to be operably coupled to an output of at least one IGBT control module and arranged to:
• detect a first logical state modulation at the input thereof, and output a first IGBT control signal indicating a required change of operating state of at least one IGBT device upon detection of a first logical state modulation at the input thereof;
• and
• detect at least one further modulation of the logical state at the input thereof within a time period from the first logical state modulation, the time period being less than a state change reaction period Δt for the at least one IGBT device, and output at least one further IGBT control signal in accordance with the detected at least one further modulation of the logical state at the input thereof.

A method of controlling an insulated gate bipolar transistor, IGBT, device, the method comprising, within an IGBT driver module:

• detecting a first logical state modulation at an input of the IGBT driver module;
• deriving a first IGBT control signal indicating a required change of operating state of at least one IGBT device upon detection of a first logical state modulation at the input thereof;
• detecting at least one further modulation of the logical state at the input of the IGBT driver module within a time period from the first logical state modulation, the time period being less than a state change reaction period Δt for the at least one IGBT device;
• and
• deriving at least one further IGBT control signal in accordance with the detected at least one further modulation of the logical state at the input thereof.