US 2006/0049859 A1 · Gate driver circuit

Abstract

A high voltage gate driver circuit according to an embodiment of the present invention controls an operational range of an output signal of a level shifter to be appropriate for an operational range of a reshaper through a VIV converter. Even though the voltage range of the signal which is input from the high voltage gate driver circuit to the level shifter is different from the operational range of the reshaper, the input signal can always be recognized exactly regardless of the VTH voltage of the reshaper by controlling the operational range of the signal through the VIV converter. In addition, incorrect operation of the circuit can be prevented by erasing a common mode noise which is input with the input signal.

Claims24

Dependent claims

A gate driver circuit comprising:

a level shifter for outputting a first voltage pulse or a second voltage pulse according to an input SET or RESET signal;
a reshaper for restoring the first or the second voltage pulse in a high voltage region;
a gate driver for generating a signal for driving a gate of a high voltage output element from the restored pulse;
and
a converter, which is coupled between the level shifter and the reshaper, for converting the voltage pulse output by the level shifter into a pulse appropriate for an operational range of the reshaper.

2 more elements

A gate driver circuit comprising:

a level shifter for outputting a first voltage pulse or a second voltage pulse according to an input SET or RESET signal;
a reshaper, receiving a voltage from a first power source and a second power source, for receiving a first voltage pulse or a second voltage pulse, restoring the first or the second voltage pulse in a high voltage region, and outputting the restored pulse;
a gate driver for generating a signal for driving a gate of a high voltage output element from the restored pulse;
and
a converter, which is coupled between the level shifter and the reshaper, for erasing noise input from the first power source and converting the voltage pulse output by the level shifter into a pulse appropriate for an operational range of the reshaper.

2 more elements

Dependencies are inferred from the claim text.

Facts

Application

11/218,384Filed 2 Sep 2005

Priority

KR 10-2004-00702873 Sep 2004

Published

9 Mar 2006

Term ends

Not estimatedThe source records don’t support an estimate.

Classification4 codes

H03K 17/162
In field-effect transistor switches: without feedback from the output circuit to the control circuit
H03K 17/063
Modifications for ensuring a fully conducting state: in field-effect transistor switches
H03K 2217/0018
Indexing scheme related to electronic switching or gating, i.e. not by contact-making or -breaking covered by H03K17/00: special modifications or…
H03K
Pulse technique

Gate driver circuit

Life of this patent

Gate driver circuit

Life of this patent

Abstract

Claims24