The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
May. 23, 2017
Filed:
Oct. 30, 2014
Panasonic Intellectual Property Management Co., Ltd., Osaka, JP;
Atsushi Morimoto, Osaka, JP;
Abstract
A gate driver circuit capable of quickly driving a semiconductor device without erroneous ignitions. It has a positive power supply for forward bias, a negative power supply for backward bias, a first bias circuit that outputs the positive- or negative-power-supply voltage according to gate driver signal S, a capacitor that is charged by the negative-power-supply voltage when the first bias circuit outputs the negative-power-supply voltage, and a second bias circuit that supplies the gate of the semiconductor device with the positive- or negative-power-supply voltage according to gate driver signal S. Only in an early stage of a transition period during which the semiconductor device is turned on, the second bias circuit supplies the gate of the semiconductor device, instead of the positive-power-supply voltage, with a voltage boosted by adding the charged voltage of the capacitor onto the positive-power-supply voltage outputted from the first bias circuit.