Switching device and method for controlling switching device
AssigneeNissan Motor Co., Ltd.
InventorsTaku Shimomura, Tetsuya Hayashi, Akinori Okubo, Daiki Sato, Yuichi Iwasaki
Life of this patent
Estimating the term…
Abstract
The present disclosure includes a drive circuit (2-4) for switching a switching element, and a variable capacity circuit (6A), connected between a control terminal (G) of the switching element and the drive circuit (2-4), capable of switching at least between a first capacity value and a second capacity value different from the first capacity value, and controls a capacity value between the control terminal and the drive circuit via the variable capacity circuit.
Claims13
A switching device for driving a switching element, comprising:
- a drive circuit for switching the switching element by controlling control voltage applied to a control terminal of the switching element;
- a variable capacity circuit connected between the control terminal and the drive circuit, and capable of switching at least between a first capacity value and a second capacity value different from the first capacity value;
- and
- a controller for controlling a capacity value between the control terminal and the drive circuit via the variable capacity circuit, wherein
- the controller controls the capacity value between the control terminal and the drive circuit based on at least one of a current value of current flowing through the switching element, or a voltage value of voltage between a high potential side terminal and a low potential side terminal of the switching element.
A method for controlling a switching device, comprising:
- a drive circuit for switching a switching element by controlling voltage applied to a control terminal of the switching element, the method comprising:
- controlling a capacity value between the control terminal and the drive circuit by controlling a variable capacity circuit connected between the control terminal and the drive circuit and capable of switching at least between a first capacity value and a second capacity value, based on at least either one of a current value of a current flowing through the switching element, or a voltage value of voltage applied to a high potential side terminal and a low potential side terminal of the switching element.
Dependencies are inferred from the claim text.