High frequency excitation system
AssigneeHUETTINGER Elektronik GmbH + Co. KG
InventorsThomas Kirchmeier, Wolfgang R. H. Oestreicher
Life of this patent
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Abstract
A power module is adapted to be connected to a voltage source and to supply power to a load. The power module includes a power transistor; and a gate controller for driving the power transistor. The gate controller includes a gate transformer, and an impulse generator that extends a negative drive phase of a gate voltage to the power transistor relative to a positive drive phase of the gate voltage to the power transistor.
Claims12
A power module adapted to be connected to a voltage source and to supply power to a load, the power module comprising:
- a power transistor;
- and
- a gate controller for driving the power transistor;
- wherein the gate controller comprises:
- a gate transformer, and
- an impulse generator that extends a negative drive phase of a gate voltage to the power transistor relative to a positive drive phase of the gate voltage to the power transistor.
A method of driving a power module, the method comprising:
- connecting the power module to a voltage source;
- supplying power from the power module to a load;
- controlling a gate of at least one power transistor of the power module with a gate controller that includes a gate transformer and an impulse generator;
- and
- creating pulses with the impulse generator to drive the gate of the at least one power transistor with a reduced duty cycle.
A method of driving a power module, the method comprising:
- connecting the power module to a voltage source;
- supplying power from the power module to a load;
- controlling a gate of at least one power transistor of the power module with a gate controller that includes a gate transformer and an impulse generator;
- creating pulses with the impulse generator to drive the gate of the at least one power transistor with a gate voltage;
- and
- extending a negative drive phase of the gate voltage relative to a positive drive phase.
Dependencies are inferred from the claim text.