US 10,476,495 B2Granted

Drive device

AssigneeNissan Motor Co., Ltd.

InventorsTaku Shimomura, Tetsuya Hayashi, Akinori Okubo, Yuichi Iwasaki

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Abstract

A drive device wherein a main switching element is connected to a main current path, an input terminal of the switching element on the higher potential side and an output terminal of the switching element on the lower potential side are electrically connected to a control terminal of the main switching element, a first resistance is connected between an input terminal of the switching element on the lower potential side and a control terminal of the main switching element, a first capacitor is parallelly connected to the first resistance, and a second capacitor is connected between a connection point of the first resistance and a control terminal of the main switching element and a terminal on the higher potential side of the main switching element.

Claims9

Dependent claims

A drive device comprising:

a main switching element connected to a main current path and including a terminal on the higher potential side, a terminal on the lower potential side, and a control terminal;
a push-pull circuit including a switching element on the higher potential side and a switching element on the lower potential side, for electrically connecting an output terminal of the switching element on the higher potential side and an input terminal of the switching element on the lower potential side to the control terminal;
a first resistance connected between the input terminal of the switching element on the lower potential side and the control terminal;
a first capacitor parallelly connected to the first resistance;
and
a second capacitor connected between a connection point of the first resistance and control terminal, and the terminal on the higher potential side,
wherein the drive device satisfies a following formula (1):
C
1
C
2
>
C
a
C
b
(
1
)
C1 denotes an electrostatic capacitance of the first capacitor, C2 denotes an electrostatic capacitance of the second capacitor, Ca denotes a parasitic capacitance of the main switching element between the control terminal and the terminal on the lower potential side, and Cb denotes a parasitic capacitance of the main switching element between the control terminal and the terminal of the higher potential side.

17 more elements

Dependencies are inferred from the claim text.

Facts

Application: 16/310,086Filed 17 Jun 2016
Published: US 2019/0181854 A113 Jun 2019
Granted: 12 Nov 2019
Term ends: Not estimatedThe source records don’t support an estimate.

Classification11 codes

H03K 17/04106
Without feedback from the output circuit to the control circuit: in field-effect transistor switches
H03K 17/162
In field-effect transistor switches: without feedback from the output circuit to the control circuit
H02M 1/08
Details of apparatus for conversion: circuits specially adapted for the generation of control voltages for semiconductor devices incorporated in…
H03K 17/04
Electronic switching or gating, i.e. not by contact-making and –breaking: modifications for accelerating switching