Gate drive circuit
AssigneeKabushiki Kaisha Toshiba
InventorHiromichi Tai
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Abstract
The present invention includes: a main voltage detection unit for detecting a voltage applied between main electrodes of an electrical power switching element; a control current source for injecting a current into a gate electrode of the electrical power switching element in accordance with the voltage detected by the main voltage detection unit; a main current detection unit for detecting a main current flowing between the main electrodes of the electrical power switching element; and an adjustment unit for adjusting a current of the control power source in accordance with the main current detected by the main current detection unit.
Claims3
A gate drive circuit for driving a gate electrode of an electrical power switching element, comprising:
- a main voltage detection unit for detecting a voltage applied between main electrodes of the electrical power switching element;
- a control current source for injecting a current into the gate electrode in accordance with the voltage detected by the main voltage detection unit;
- a main current detection unit for detecting a main current flowing between the main electrodes of the electrical power switching element;
- and
- an adjustment unit for adjusting the current of the control current source in accordance with the main current detected by the main current detection unit.
Dependencies are inferred from the claim text.