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:
Jul. 19, 2022
Filed:
Dec. 11, 2018
Rohm Co., Ltd., Kyoto, JP;
Yusuke Nakakohara, Kyoto, JP;
Yuta Okawauchi, Kyoto, JP;
Ken Nakahara, Kyoto, JP;
Shinichiro Nagai, Gunma, JP;
Yuuki Ootabara, Gunma, JP;
Rohm Co., Ltd., Kyoto, JP;
Abstract
A negative voltage generation circuitincludes a first DC voltage sourcehaving a positive terminal connected to a first node N(Vin), a first diodehaving a cathode connected to a negative terminal of the first DC voltage sourceand an anode connected to an output terminal of a first negative voltage VC(fourth node N), and a first capacitorhaving a first terminal connected to an output terminal of the first negative voltage VCand a second terminal connected to a second node N(Vs_high), so as to supply the first negative voltage VCto a first driverthat performs switching control of a first NMOSFET(first switch element) connected between the first node N(Vin) and the second node N(Vs_high).